�5.0L V8 - VIN [F] & 5.0L HO V8 - VIN [M]

�1987 Lincoln Mark VII

1985-87 FORD MOTOR CO. ENGINES 5.0L & 5.0L HO V8

Ford: Crown Victoria, LTD, Mustang, Thunderbird Lincoln: Continental, Mark VII, Town Car Mercury: Capri, Cougar, Grand Marquis, Marquis

ENGINE IDENTIFICATION

NOTE: For engine repair procedures not covered in this article, see ENGINE OVERHAUL PROCEDURES - GENERAL INFORMATION article in the GENERAL INFORMATION section.

Engine is identified by the Vehicle Identification Number(VIN). VIN is stamped on metal tab attached to instrument panel nearwindshield on driver’s side of vehicle and is visible from outside.VIN number is also stamped on Safety Certification Decal, mounted onleft front door lock face panel and on Engine Identification Labelmounted on valve cover. The VIN number contains 17 characters. The eighth characteridentifies engine type, and the tenth character identifies model year.The 5.OL HO (High Output) engine is available in Cougar, Mustang andThunderbird.

ENGINE IDENTIFICATION CODES TABLE�����������������������������������������������������������������������������������������������������������������������

Application VIN Code

5.0L (302") V8 2-Bbl. or EFI ........................... F5.0L (302") HO V8 4-Bbl. or EFI.......................... M�����������������������������������������������������������������������������������������������������������������������

ADJUSTMENTS

VALVE CLEARANCE ADJUSTMENT

Introduction A positive stop rocker arm bolt eliminates the necessity (orability) of adjusting the valve clearance. However, to compensate forany dimensional changes in valve mechanism, a .060" (1.52 mm) shorter,or a .060" (1.52 mm) longer replacement push rod is available. To determine whether or not a longer or a shorter push rod isnecessary, clearance between each rocker arm and valve stem must bechecked.

Valve Arrangement I-E-I-E-I-E-I-E (Right bank, front-to-rear). E-I-E-I-E-I-E-I (Left bank, front-to-rear).

Check 1) After removing valve covers, rotate crankshaft until No. 1piston is at TDC after compression stroke, as indicated by timing markon crankshaft damper and pointer. See position "1" in Fig. 1. 2) Use the CLOSED VALVE TABLE to identify which valves can bechecked with the crankshaft in this position. Select a valve on thetable. Position a lifter compression tool on the rocker arm and slowlyapply pressure until the plunger is completely bottomed. 3) Hold the lifter in this position and check the availableclearance between the rocker arm and the valve stem tip with a feeler

gauge. Refer to either VALVE CLEARANCE LIMITS (STANDARD) or refer toVALVE CLEARANCE LIMITS (HIGH OUTPUT) table. If clearance is less thanspecified, install shorter push rod. If clearance is greater thanspecified, install longer push rod. Repeat steps 2-3 with theremaining valves. 4) Rotate crankshaft 360 degrees clockwise from position "1"so point "2" is opposite pointer. See Fig. 1. Repeat steps 2-3 forposition "2". 5) Rotate crankshaft 90 degrees clockwise from point "2" sopoint "3" is opposite pointer. See Fig. 1. Repeat steps 2-3 forposition "2".

CLOSED VALVE TABLE�����������������������������������������������������������������������������������������������������������������������

Dimension & Engine Check Valve On Cylinder #

Position "1" 5.0L Intake .............................. Nos. 1, 7 and 8. Exhaust ............................. Nos. 1, 5 and 4. 5.0L HO Intake .............................. Nos. 1, 4 and 8. Exhaust ............................. Nos. 1, 3 and 7.Position "2" 5.0L Intake ................................. Nos. 4 and 5. Exhaust ................................ Nos. 2 and 6. 5.0L HO Intake ................................. Nos. 3 and 7. Exhaust ................................ Nos. 2 and 6.Position "3" 5.0L Intake .............................. Nos. 2, 3 and 6. Exhaust ............................. Nos. 3, 7 and 8. 5.0L HO Intake .............................. Nos. 2, 5 and 6. Exhaust ............................. Nos. 4, 5 and 8.�����������������������������������������������������������������������������������������������������������������������

VALVE CLEARANCE LIMITS (STANDARD) TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)Allowable Desired

.071-.171 (1.80-4.34) ............ .096-.146 (2.44-3.70)�����������������������������������������������������������������������������������������������������������������������

VALVE CLEARANCE LIMITS (HIGH OUTPUT) TABLE�����������������������������������������������������������������������������������������������������������������������

Application (1) In. (mm)Allowable Desired

.096-.146 (2.44-3.70) ............... .098-.198 (2.49-5.03)

(1) - 5.0L HO desired collapsed lifter gap is .123-.146" (3.12-3.70 mm).�����������������������������������������������������������������������������������������������������������������������

Fig. 1: Positioning Crankshaft for Hydraulic Lifter Adjustment

REMOVAL & INSTALLATION

ENGINE

1) Mark hinges for reinstallation and remove hood. Draincrankcase and cooling system. Disconnect battery and alternator groundcables from engine. Remove air cleaner and intake duct assembly. 2) Disconnect upper and lower radiator hoses. Disconnecttransmission oil cooler lines from radiator. Remove bolts attachingfan shroud to radiator. Remove radiator. 3) Remove fan, spacer, belt, pulley and shroud. Removealternator bolts and position alternator aside. Disconnect oilpressure sending unit wire from sending unit. 4) Disconnect flexible fuel line at fuel tank line. On CFIequipped vehicles, relieve pressure in fuel lines beforedisconnecting. Plug fuel tank line. Disconnect accelerator cable fromcarburetor. Disconnect speed control cable (if equipped). 5) Disconnect throttle valve vacuum line from intake manifold(if equipped). Disconnect transmission filler tube bracket from engineblock. On vehicles equipped with A/C, remove A/C compressor and setaside. 6) If power steering equipped, disconnect power steering pumpbracket from cylinder head. Remove drive belt. Position pump aside. Ifpower brake equipped, disconnect brake vacuum line from intakemanifold. 7) Disconnect heater hoses from water pump and intakemanifold. Disconnect coolant temperature sending unit wire fromsending unit. Remove flywheel/converter housing-to-engine upper bolts. 8) Disconnect primary wiring connector from ignition coil(coil is located on right-hand strut tower on Continental). Removewire harness and position aside. Disconnect ground strap from block. 9) Raise front of vehicle. Disconnect starter cable fromstarter. Remove starter. Disconnect muffler inlet pipes from exhaustmanifolds. Disconnect engine support insulators. 10) Disconnect transmission cooler lines from retainer andremove converter housing inspection cover. Disconnect converter fromdrive plate. Secure converter assembly in housing. Remove remainingconverter housing-to-engine bolts. 11) Lower vehicle and support transmission. Attach enginehoist and carefully separate engine from transmission. Remove engine. 12) To install, reverse removal procedure.

INTAKE MANIFOLD

Removal 1) Disconnect negative battery cable and drain coolingsystem. Remove crankcase ventilation and evaporative purge hoses.Disconnect automatic choke heat tube. 2) Disconnect accelerator cable and speed control linkagefrom throttle body. Disconnect vacuum lines at the intake manifoldfitting. Remove distributor cap and wires as an assembly. Disconnectdistributor vacuum hoses and wiring connector from distributor. Removedistributor. 3) Disconnect upper radiator hose at engine. Disconnectheater hose and water pump by-pass hose at intake manifold. Disconnectwater pump by-pass hose at coolant outlet housing. 4) Disconnect wires at ECT, ACT, TP, ISC solenoid and EGRsensors. Disconnect injector wire connections, and fuel chargingassembly wiring (SFI). 5) Disconnect fuel evaporative purge tube (if equipped).Disconnect fuel supply and return lines. Remove upper intake manifold.Remove lower intake manifold.

Installation 1) Clean gasket mating surfaces. Apply oil resistant sealer

at four junction points of seals and gaskets. Position front and rearseals on cylinder block and new gaskets on heads. 2) Make sure that holes in gaskets are aligned with holes incylinder head. Position gaskets to interlock with seal tabs. Usingguide pins, lower manifold in place. 3) Check for correct positioning of gaskets and seals beforeinstalling bolts. Remove guide pins. Install bolts and tighten inspecified sequence. See Fig. 2. Reverse removal procedure to completeinstallation. 4) Start engine. Check and adjust ignition timing. Operateengine until it reaches normal operating temperature, then retightenmanifold bolts.

Fig. 2: Intake Manifold Tightening SequenceTighten bolts in 3 steps.

EXHAUST MANIFOLD

Removal 1) On right side exhaust manifolds, remove the air cleaner-to-throttle body tube and thermactor hardware. On left sidemanifolds, remove the oil dipstick and tube assembly, air cleaner andinlet duct assembly. 2) Disconnect the exhaust manifold from the muffler inletpipe. Remove spark plug wires and plugs. Disconnect the exhaust gasoxygen sensor (EGO), if equipped. Remove exhaust manifold.

Installation 1) Clean mating surfaces of exhaust manifold and cylinderhead. Clean mounting flange and muffler inlet pipe. Position exhaustmanifold on cylinder heads and install washers and retaining bolts.Tighten the bolts to specifications. 2) Install spark plugs and wires. Connect exhaust gas oxygensensor (if equipped). To complete installation, reverse removalprocedure.

CYLINDER HEAD

NOTE: Cylinder head should only be removed when engine is cold. Check cylinder head for warped gasket surface, nicks or damage. If cylinder head refinishing is needed, DO NOT machine more than .010" (.25 mm) from gasket surface. Replace head if cracked. Remove burrs or scratches with an oil stone.

Removal 1) Disconnect negative battery cable. Remove upper intakemanifold and carburetor as an assembly. Remove lower intake manifold.Remove valve covers. If equipped, discharge A/C compressor anddisconnect refrigerant lines. Remove compressor. 2) If equipped, disconnect power steering pump and bracket.Remove drive belt from pump pulley and position to one side. Removealternator mounting bracket bolt, air cleaner inlet duct, ignitioncoil and thermactor crossover tube (from rear of cylinder head). 3) If equipped, remove fuel line from clip at front ofcylinder head. Disconnect exhaust inlet pipes at exhaust manifolds.Loosen rocker arm fulcrum bolts and rotate rocker arms to side. Removepush rods, keeping them in proper sequence for reinstallation inoriginal positions. 4) On some engines it may be necessary to remove exhaustmanifold to gain access to lower cylinder head bolts. Remove exhaustvalve stem caps. Remove cylinder head bolts and cylinder head.

NOTE: If cylinder head is to be serviced, remove carbon deposits from combustion chamber with scraper and wire brush before removing valves. When disassembling, mark all valve components for proper reassembly.

Installation 1) Clean old gasket material from cylinder head and block.Check cylinder head and block gasket surface for warpage. Gasketsurface maximum warpage is .003" (.08 mm) in any 6" (152 mm), and .006" (.152 mm) overall. 2) Position head gasket over dowels and onto block. Installcylinder head. Install bolts and tighten in three steps. See Fig. 3. 3) Clean push rods in solvent and blow out each oil passagewith compressed air. Check ends of push rod for nicks, grooves orexcessive wear. Ensure push rods are straight by checking with dialindicator and "V" block. 4) If runout exceeds .015" (.38 mm), replace push rod. DO NOTattempt to straighten push rod. Apply Ford Polyethylene Grease (DOAZ-19584-A) to rocker arm contact points and push rod ends. Reverse

removal procedure to complete installation.

Fig. 3: Cylinder Head Tightening SequenceTighten bolts in 3 steps.

VALVE SPRINGS

Removal 1) Remove valve cover and spark plug on cylinder to beserviced. Be sure piston is at top of stroke with both valves closed.Install air line with adapter in spark plug hole. Apply minimum of 140psi line pressure.

NOTE: If air pressure fails to hold valve closed, remove cylinder head for inspection.

2) Remove required rocker arm and push rod. Use springcompressor to compress valve spring and remove retainer locks, sleeve,spring retainer and valve spring. Remove and discard valve stem seal.Do not remove air pressure, as this will allow valve to fall intocylinder if piston has been moved to bottom of cylinder. 3) Check valve spring for out of square with 90 degreestraight edge. Valve spring out-of-square service limit is .078" (1.98mm) for intake and exhaust springs on all models. Check valve springcompression pressure and replace any spring not within specification.

Installation 1) Lubricate valve stem with engine oil and install new valvestem seal. Place spring in position over valve and install springretainer. Compress valve spring and install locks. Check valve springfor proper installed height. 2) Remove air pressure and adapter and install spark plugs.Apply Ford Polyethylene Grease (DOAZ-19584-A) to ends of push rods andtip of valve stems. Install rocker arms and tighten.

VALVE STEM OIL SEALS

1) If valve or valve seat has not been damaged, valvesprings, seals and retainers may be replaced by holding affected valve

against seat using air pressure. Cup or umbrella type seals are usedon all valves.

NOTE: An adapter can be constructed by welding an air hose connection to body of spark plug with porcelain removed.

2) Install Compressed Air Line Adapter (6513-ABA) in sparkplug hole. A minimum of 140 psi (9.8 kg/cm

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) line pressure isrequired. If air pressure does not hold valve shut, valve is damagedor burnt and cylinder head must be removed for service. 3) With valve in head, install plastic seal protector capover end of valve stem. Oil protector cap and start stem sealcarefully over cap. Push seal down until seal jacket touches top ofvalve guide. Remove plastic seal protector cap. Using seal installer,bottom seal on valve guide.

HYDRAULIC ROLLER LIFTER ASSEMBLY

1) Remove intake manifold and related components. Removevalve covers and loosen rocker arm bolts. Rotate rocker arms out ofway and remove push rods keeping them in order for reinstallation inoriginal positions. 2) On 5.0L engines with roller lifters, push rods have acollar at upper end and can only be installed one way. Balls at eachend of push rod are not identical. 3) Remove lifter guide retainer bolts. Remove retainer andlifter guide plates. Label guide plates for reinstallation in originalposition. Remove lifters.

NOTE: Roller lifters must be installed in original position and orientation in bore so that roller rotates in same direction.

4) To install, reverse removal procedure. Lubricate lifter,lifter bore, rocker arms and fulcrum seats with engine oil. Apply FordPolyethylene Grease (DOAZ-19584-A) to valve stem tips and push rodends.

HYDRAULIC VALVE LIFTER ASSEMBLY

NOTE: Before replacing hydraulic lifter for noisy operation, be sure noise is not caused by improper collapsed lifter gap, worn rocker arms, push rods or valve tips. If lifter assembly is stuck in bore, use Hydraulic Lifter Puller (T70L-6500-A) or magnet.

1) Hydraulic lifter assemblies must be installed in originallocations. Remove cylinder head and related parts. Using lifterremover or magnet, remove lifters. Clean and inspect but do not mixcomponents or positions. Parts are select-fitted and are notinterchangeable. 2) If lifter is sticking, disassemble and clean dirt, metalchips or varnish from components. If lifter check valve is notfunctional, obstructions may be preventing it from closing when camlobe is moving lifter, or check valve spring may be broken. Clean orreplace components as necessary. 3) If plunger is not free in body of lifter, replace entireassembly. Plunger should drop to bottom of body by its own weight whenassembled dry. Assemble lifter and check free operation by pressingdown on cap.

NOTE: If lifter has been disassembled and cleaned, be sure to fill with test fluid before installing in engine. New lifters already contain test fluid. When performing leak-down test,

note that lifters cannot be checked with engine oil in them, only test fluid can be used.

4) Place lifter upright in Hydraulic Lifter Leak-Down Tester(6500-E), and check leak-down rate. Leak-down rate is 10-15 secondsmeasure at .0625" (1.59 mm) plunger travel, under 50 lb. (22 kg) load. 5) Inspect lifter base-to-cam lobe contact area. Surface musthave smooth and convex contact face. Replace any lifter with flat orconcave surface. Inspect related cam lobe for proper lobe lift.Replace camshaft (and lifters if necessary) if any lobe is worn beyondspecification. 6) Check lifter-to-bore clearance. Standard clearance is .0007-.0027" (.018-.069 mm). Service limit is .0050" (.130 mm) maximum.Standard diameter of lifter is .8740-.8745" (22.200-22.212 mm).

Fig. 4: Exploded View of Valve Lifter Assembly

OIL PAN

Continental, Crown Victoria, Grand Marquis, Mark VII & Town Car 1) Remove air cleaner, disconnect accelerator and kickdownrods at carburetor and remove accelerator mounting bracket. (With EEC,remove EGR valve and cooler.) Remove fan shroud bolts and positionshroud over fan. Disconnect wiring from harness and remove wipermotor. 2) Disconnect windshield washer hose and remove wiper motormounting cover. Remove dipstick and dipstick tube retaining bolt atexhaust manifold. With EEC, remove thermactor air dump tube retainingclamp and thermactor crossover tube at rear of engine. 3) On all models, raise vehicle and drain crankcase. WithEEC, remove filler tube and drain transmission. Disconnect starterwiring, remove starter. On all models, disconnect fuel line from fuel

pump and inlet pipes from exhaust manifold.

CAUTION: Before disconnecting fuel lines on vehicles equipped with a high pressure electric fuel pump, relieve pressure at Schrader valve on fuel charging assembly.

4) With EEC, remove exhaust gas oxygen sensor from exhaustmanifold and thermactor secondary air tube-to-converter housingclamps. Disconnect exhaust pipes to catalytic converter outlet. Removecatalytic converter secondary air tube and inlet pipes to exhaustmanifold. 5) On all models, remove rear engine mount through bolts andshift crossover bolts at transmission. Disconnect transmissionkickdown rod. Remove flywheel access cover. Remove brake line retainerfrom front crossmember. Using a jack, raise engine as far as possible. 6) Place support blocks between engine mounts and chassisbrackets. Remove jack. Disconnect low oil sensor from oil pan, ifequipped. Remove oil pan bolts and lower pan. Remove oil pump pickuptube assembly and place in oil pan. Remove oil pan.

NOTE: Vehicles equipped with dual sump oil pans require removal of both drain plugs to drain crankcase.

Mustang 1) Disconnect negative battery cable. Remove fan shroud boltsand position shroud over fan. Remove engine oil dipstick tubeassembly. Raise and support vehicle. Drain crankcase and disconnectsteering flex coupling. 2) Remove steering gear to main crossmember bolts and letsteering gear rest on frame. Remove nuts and washers from enginemounts to No. 2 crossmember and disconnect transmission cooler lines.Raise engine and place support blocks between engine mounts and No. 2crossmember. 3) Remove flywheel access cover and rear "K" braces. Removeoil pan bolts and lower oil pan to frame. Remove oil pump bolts andinlet tube attaching nut. Lower oil pump into pan. Remove oil pan,rotating crankshaft if necessary to clear oil Pan.

Cougar & Thunderbird 1) Disconnect negative battery cable and remove air cleanerassembly. Remove fan shroud bolts and position shroud over fan. Raiseand support vehicle. Disconnect oil level indicator from oil pan.Drain crankcase and transmission. Remove driveshaft. 2) Disconnect gearshift bellcrank lever and speedometer cablefrom transmission. Remove flywheel access cover, and flywheel-to-converter bolts. Remove transmission kickdown control shaft and gearselector valve-rod. Disconnect starter wiring and remove starter. 3) Remove exhaust catalyst converter and muffler inlet pipes.Using a jack, support transmission and remove converter housing-to-cylinder block bolts. Remove engine mount bolts. Remove No. 3crossmember and transmission mount assemblies. 4) Unplug neutral start switch electrical connector anddisconnect transmission oil cooler lines. Remove transmission andconverter as an assembly. Remove flywheel and rear cover plate. Removesteering gear bolts and lay gear aside. 5) Raise and support engine in a position allowing adequateclearance for oil pan removal. Remove oil pan bolts and lower oil panto crossmember. Remove oil pump and pickup tube assembly and place inpan. Remove oil pan from vehicle.

REAR MAIN BEARING OIL SEAL

Removal

1) With transmission and related components removed, punchhole into seal metal surface between seal lip and engine block withsharp awl. 2) Screw in threaded end of Slide Hammer (T77L-9533-B1). Useslide hammer to remove seal. Use caution to avoid scratching ordamaging oil seal surface.

Installation 1) Lubricate seal and seal mating surface with engine oil.Install oil seal on Seal Installer (T82L-6701-A) with spring sidetoward engine. Position tool and seal on rear of engine. 2) Alternate bolt tightening to properly seat seal. Installseal with rear face to seal within .005" (.13 mm) of rear face ofblock. If bolts are not available with installer, engine flywheelbolts may be used. See Fig. 5. Reverse removal procedure to completeinstallation.

Fig. 5: Installing Rear Main Oil Seal

FRONT COVER

Removal

1) Drain cooling system and crankcase. Remove fan, spacer,radiator shroud and all hoses or brackets attached to water pump.Remove crankshaft pulley and remove vibration damper using universalpuller. Disconnect fuel pump outlet line from fuel pump. 2) Remove fuel pump bolts and lay pump to one side (with fuelline attached). Remove front cover bolts and cut oil pan gasket flushwith cylinder block. Remove front cover and water pump as an assembly.If front cover is replaced, remove water pump from old cover. Installpump on new cover with new gasket.

NOTE: Cover front oil pan opening while cover assembly is off, to prevent dirt or gasket material from entering oil pan.

Installation 1) Clean all gasket surfaces. Cut and position requiredsections of new gasket on oil pan using contact cement. Apply RTVsilicone sealer to corners and gasket junctions. 2) Install new front cover seal. Use Pilot/Front CoverAligner (T61P-6019-B or 6059-F) to center front cover on crankshaft.Use care when installing cover to avoid seal damage or possible gasketmislocation. 3) With front cover in place, it may be necessary to forcecover downward to slightly compress pan gasket. Install retainingbolts and tighten. Apply polyethylene grease to oil-seal-rubbing-surface of vibration damper inner hub to prevent seal damage. 4) Apply polyethylene grease to front of crankshaft fordamper installation. Line up damper keyway with key on crankshaft andinstall damper. Install fuel pump with new gasket. Reverse removalprocedure to complete installation.

FRONT COVER OIL SEAL

Removal Remove front cover. Using pin punch, drive out front coveroil seal. Use care to avoid damaging oil seal surfaces.

Installation Coat seal with grease and drive into cover using Seal Driver(T53L-200-A and T58P-6700-B). Check seal to ensure it is fully seatedand spring is positioned properly. Install front cover.

TIMING CHAIN

Removal 1) With crankshaft pulley, front cover and related componentsremoved, align timing marks. See Fig. 6. Remove camshaft sprocket capscrew, washer, fuel pump eccentric and spacer (if equipped). Inspectchain as outlined below. 2) Slide both sprockets with timing chain forward and removethem as an assembly. Inspect timing chain and sprockets for worn gearteeth, stretched chain or damaged components.

Inspection 1) With front cover removed, and timing chain installed,rotate crankshaft in counterclockwise direction to take up slack onleft side of chain. Establish reference point on engine block andmeasure from this point to chain. 2) Rotate crankshaft in opposite direction to take up slackon right side of chain. Force left side of chain out and measuredifference between reference point and chain. If deflection exceeds .500" (12.70 mm), replace timing chain.

Installation

1) Position timing chain on sprockets with timing marksaligned. See Fig. 6. Slide both sprockets and timing chain onto engineas an assembly. Install spacer (if equipped), fuel pump eccentric,washer and sprocket cap screw. 2) Tighten sprocket bolt. Oil timing chain and sprockets.Clean gasket area and install new oil seal as necessary. Install frontcover, new gaskets and related components.

Fig. 6: Timing Chain Sprocket Alignment

CAMSHAFT

Removal

1) Drain cooling system and remove radiator, A/C condenserand grille components, as necessary. Remove engine front cover, fuelpump and gaskets. Remove sprockets and timing chain as an assembly. 2) Remove intake manifold and related parts. Remove crankcaseventilation tube and tubes from valve covers. Remove EGR cooler (ifequipped). Remove valve covers and loosen rocker arm fulcrum bolts.Rotate rocker arms to the side and remove push rods (identify forproper installation). 3) Remove and identify valve lifters for proper installation.Remove camshaft thrust plate. Carefully pull camshaft toward front ofengine and remove. Use caution to avoid damage to camshaft bearings.

Inspection 1) Check camshaft journals for out-of-round condition. Ifjournals exceed .0005" (.013 mm) out-of-round, replace camshaft. Checkcamshaft end play. Standard end play is .001-.007" (.025-.178 mm). Endplay service limit is .009" (.228 mm). Replace thrust plate ifclearance is excessive. 2) Check camshaft journal runout. Runout limit is .005" (.013mm). Check camshaft for alignment. Use "V" block and dial indicator.If dial gauge reads more than .0015" (.040 mm), replace camshaft.Check camshaft journal-to-bearing clearance. Service limit is .006" (.15 mm). 3) Check camshaft lobe lift. Attach dial indicator with aball/socket attachment to camshaft carrier or "V" block. Measure lobelift. Allowable lobe lift loss is .005" (.013 mm). If not tospecification, replace camshaft.

Installation 1) Oil camshaft journals with engine oil and apply Lubriplateto camshaft lobes. Carefully slide camshaft through bearings andinstall camshaft thrust plate with groove toward cylinder block. 2) Lubricate lifters and lifter bores with oil and install insame order as removal. Apply polyethylene grease or Lubriplate to pushrod ends and install in proper positions. Lubricate rocker arms andinstall. 3) If any valve train components have been replaced, performvalve clearance adjustment. Install other components previouslyremoved to complete installation.

OIL PUMP

NOTE: When draining engine oil, ensure both drain plugs are removed from dual sump oil pan. Failure to remove both plugs will result in incorrect oil level reading after crankcase refill.

Removal 1) Disconnect negative battery cable. Remove fan shroudattaching bolts and reposition shroud back over fan. Remove dipstickand tube assembly. Raise vehicle and drain crankcase. 2) Disconnect steering flex coupling. Remove 2 boltsattaching steering gear to main crossmember. Set steering gear asideaway from oil pan. Remove nuts and washers attaching engine mounts toNo. 2 crossmember. Disconnect transmission oil cooler lines andrelated components. 3) Raise engine and support with blocks between engine mountsand crossmember. Remove converter inspection plate. Remove 4 attachingbolts and rear "K" braces. Remove the oil pan and related parts.Remove oil inlet tube and screen assembly. Remove the oil pumpattaching bolts and remove the oil pump and intermediate drive shaft.

Disassembly 1) Remove cover bolts and cover from pump. Remove inner rotor

and shaft assembly, then remove outer race. See Fig. 7. 2) Drill small hole and insert self-threading sheet metalscrew into oil pressure relief cap and pull from chamber. Removespring and plunger.

NOTE: Identification mark (dimple) on outer race must face outward and on same side as identification mark on rotor. Rotor and shaft assembly and outer race are serviced as an assembly and parts must be replaced together.

Reassembly 1) Clean, inspect and oil all parts thoroughly. Installrelief valve plunger, spring and new cap. Install outer race and innerrotor and shaft assembly. 2) Install oil pump end cover and tighten bolts. Install oilinlet tube on pump.

CAUTION: Do not attempt to force oil pump into position if it will not seat readily. The drive shaft hex may be misaligned with distributor shaft. To align, rotate intermediate drive shaft into new position.

Installation 1) Prime oil pump by filling either inlet or outlet port withoil. Rotate pump shaft to distribute oil within pump body. 2) Position intermediate drive shaft into distributor socket.With shaft firmly seated in socket, stop on shaft should touch roof ofcrankcase. If necessary, remove shaft and reposition stop. 3) With stop properly positioned, insert intermediate driveshaft into oil pump. Install pump and shaft as an assembly. Tightenoil pump attaching bolts. Reverse removal procedure to completeinstallation.

Fig. 7: Exploded View of Oil Pump AssemblyEnsure drive shaft hex is aligned with distributor shaft.

WATER PUMP

Removal 1) Disconnect negative battery cable and drain coolingsystem. Remove carburetor air inlet tube. Remove fan shroud andposition shroud over fan. Remove fan and spacer from water pump shaft.Remove shroud and all accessory drive belts. 2) Remove all accessory brackets attached to water pump.Remove water pump pulley. Disconnect radiator lower hose, heater hoseand water by-pass hose at water pump. Remove bolts that attach waterpump to front cover. Remove pump and discard gasket.

NOTE: If installing new water pump, transfer pulley from old pump.

Installation 1) Clean all surfaces of gasket material to ensure good seal.Apply sealant to water pump sealing surface. Apply sealer to newgasket and install. 2) While sealer is wet, install water pump and tightenattaching bolts. Install pulley, brackets and drive belts. Adjustdrive belts to specified tension. Reverse removal procedure tocomplete installation.

NOTE: For further information on cooling systems, Refer to ENGINE COOLING system article in this section.

OVERHAUL

CYLINDER HEAD: VALVE ARRANGEMENT

I-E-I-E-I-E-I-E (Right bank, front-to-rear). E-I-E-I-E-I-E-I (Left bank, front-to-rear).

CYLINDER HEAD: VALVE GUIDE SERVICING

NOTE: When reconditioning valves, ensure interference angles of valve and seat are not lapped out. Remove all grooves and/or score marks from end of valve stem with an oil stone. DO NOT remove more than .010" (.254 mm) from end of valve stem.

1) Valve guides are integral with cylinder head. Check valvestem-to-guide clearance. If clearance exceeds service limits,recondition valve guide. To check valve guide wear, insert Valve StemClearance Tool (6505-E) onto valve stem until fully seated and tightenset screw. Permit valve to drop away from seat until tool contactsvalve guide. 2) Attach dial gauge to cylinder head. Position gaugeindicator against center portion of tool’s spherical section at rightangle. Move valve in guide and note guide wear shown on dial gauge.Divide reading by 2 (division factor for tool). Resulting measurementis valve stem clearance. See VALVE SPECIFICATIONS TABLE. 3) Use valve guide cleaning tool for cleaning guides. To reamguides for installation of valves with oversize stems, use reamers insequence and reface valve seat after valve guide is reamed. 4) Valve guide reamers are furnished in: .003" (.076 mm)oversize with standard diameter pilot, .015" (.380 mm) oversize reamerwith .003" (.076 mm) oversize pilot, and .030" (.760 mm) oversizereamer with .015" (.380 mm) oversize pilot. 5) If valve face is reground, check margin width dimension.Check valve seats for proper angle and seat width. Measure valve seatrunout. Valve seat runout should be within .002" (.05 mm) for intakeand exhaust. Valve seat must be refaced after guide has been reamed. 6) Intake and exhaust valve seat width is .060-.080" (1.52-2.03 mm). Use scraper to break (lightly chamfer or bevel) sharp top

inside edge of guide. After valve guide repair, inspect valve stem endfor wear before installation. Valve stem end may be reconditioned bygrinding.

CYLINDER HEAD: VALVE SPRING INSTALLED HEIGHT

Installed height of valve spring must not exceedspecification. Measure height from surface of cylinder head pad tounderside of spring retainer. See Fig. 8. If height is greater thanspecified, install .030" (.76 mm) shim spacer on head under spring tobring height within limits.

CAUTION: Install shim spacers only if necessary. Do not use more than 2 spacers, as this will over-stress springs and overload camshaft lobes.

Fig. 8: Measuring Valve Spring Installed Height

CYLINDER BLOCK: PISTON & ROD ASSEMBLY

NOTE: When removing ridge at top of cylinder bore, never cut into ring travel area more than .03125" (.794 mm). DO NOT damage crankshaft journals or cylinder wall during removal.

Removal 1) Before removing piston and connecting rod, ensure rods androd caps are labeled for proper reassembly. During removal, rotatecrankshaft until piston assembly being removed is at bottom of stroke.With cylinder head and oil pan removed, inspect cylinder bores for

ridges and/or deposits. Move piston to be removed to bottom of boreand cover with cloth to catch metal cuttings. 2) Remove ridge at top of cylinder bores (using ridge reamer)before removing pistons from block. Rotate crankshaft and inspectconnecting rods and rod caps for cylinder identification. Label themif necessary. 3) Remove rod nuts and cap. Install rubber sleeves on rodbolts and push each piston and rod assembly out through top ofcylinder bore. Take care not to nick crankshaft journal or cylinderwall. Remove bearing inserts from rod and cap. Inspect for size, wearand damage. Install rod caps on mating rods.

Installation 1) Check fit of new piston and/or rings in cylinder borebefore assembling piston and pin to connecting rod. Check piston pinfor clearance, etching or wear. Install pistons on connecting rods.See Fig. 9. 2) Oil piston rings and cylinder walls with light coat ofengine oil. Ensure ring gaps are properly spaced on piston and installring compressor on piston. See Fig. 10. 3) After bearings have been inserted, apply oil to journalsand bearings. Install rod bolt protectors before installing piston androd assembly in bore. Turn crankshaft throw to bottom of its stroke.Tap gently with wooden handle to insert piston/rod assembly intocylinder bore. Guide piston/rod assembly over crankshaft journal untilrod bearing seats. 4) Match rod cap to rod and install cap. Tighten cap nuts intwo steps. Repeat procedure for each piston assembly. After piston/rodassembly is installed, check side clearance between connecting rods oneach crankshaft journal.

Fig. 9: Piston and Connecting Rod Index Mark LocationsW/ arrow forward, numbers on right are for right bank, and left forleft bank.

Fig. 10: Piston Ring Gap SpacingCheck that gaps are properly spaced and that marks face up.

CYLINDER BLOCK: FITTING PISTONS

1) Inspect pistons and replace any showing signs of excessivewear, wavy ring lands, or fractures. Replace piston if sponge-like oreroded surface is on edge of piston top (caused by detonation or pre-ignition). 2) Note if shiny surface on thrust side of piston is found,

check for bent connecting rod. Replace piston and/or rod as necessary.Inspect connecting rods for signs of fracture and bearing bores forout-of-round and taper. 3) If bore exceeds recommended limits and/or rod isfractured, replace rod. Check pistons for fractures at ring lands,skirts and pin bosses. Check for scuffed, rough or scored skirts. 4) Check piston-to-cylinder bore clearance by measuringpiston and bore diameters. Inspect cylinder walls for scoring,roughness or other signs of wear. Check bore for out-of-round andtaper. Cylinder bore out-of-round limit is .0015" (.038 mm), andservice limit is .005" (.127 mm). 5) Cylinder bore taper should not be more than .010" (.254mm). Measure diameter of cylinder bore at top, middle and bottom withgauge at right angle and parallel to centerline of engine. Measureouter diameter of piston at centerline of pin bore and 90 degrees topin bore axis. 6) If cylinder wall is severely marred and/or worn beyondspecifications, refinishing will be necessary. Before any cylinderrefinishing, ensure that main bearing caps are in place and tightenedto specification to avoid distortion during refinishing operation. 7) After refinishing and before measurement, clean bore withsoap/water solution and oil cylinder walls. Ensure piston and cylinderbore are clean, dry, and at room temperature: 70

�

F (21�

C) duringmeasurement. After any refinishing operation, allow bore to cool.

CYLINDER BLOCK: FITTING PISTON RINGS

1) Clean ring grooves with ring groove cleaner or piece ofbroken ring. Ensure oil holes (or slots) in piston are clean. Measurepiston ring side and end gap clearance for all pistons. Maximum pistonring side gap clearance is .006" (.152 mm). 2) Ring side clearance should be checked with feeler gaugebetween ring and piston lower ring land. Gauge should slide freelyaround entire circumference without blinding. If step has formedaround inner portion of lower ring land, piston must be replaced. 3) Using piston to position ring in cylinder bore, check ringend gap at least .63" (16 mm) from bottom of bore. Ring end gapservice limit is .019" (.50 mm). Install rings on pistons with endgaps staggered at proper intervals. Ensure ring gap is not in linewith thrust face of pin bore. See Fig. 10. Be sure manufacturer’smarks face up when rings are installed. 4) Install oil ring expander first, followed by lower oilring side rail and upper side rail. Do not use ring expander on siderails. When installing lower side rail, place one end between pistonring groove and expander. Hold end firmly and press down portion to beinstalled until side rail is in position. Install upper side railfollowing same procedure. 5) Using ring expander, install intermediate and upper rings.Check that all components are within specifications. If new pistonrings are to be installed and no visible cross-hatch marks remain oncylinder walls, remove cylinder wall glaze using spring-type hone.After honing, clean bore and block with soap and water solution. Oilcylinder walls.

CYLINDER BLOCK: FITTING PISTON PINS

NOTE: When removing or installing piston pin, connecting rod should be in firm contact with body of pin setting tool.

Removal 1) Remove bearing inserts from connecting rod and cap. Markpistons, pins and inserts (if reusable) to assure assembly with samerod. Press piston pin from piston and connecting rod using arbor press

and Piston Pin Remover/Replacer (T68P-6135-A). 2) Inspect and replace any piston pin showing signs offracture, etching or wear. Check piston pin-to-rod bore fit. Lubricatepin and small end of rod bore with engine oil.

Installation 1) Check piston to bore clearance before assembling pistonand pin to connecting rod. Ensure connecting rod and cap numbers areon right side, and arrow on top of piston faces front for right bankof cylinders. Rod and cap numbers are on left side, and arrow facesfront for left bank. See Fig. 9. 2) Place piston pin through piston and connecting rod. Usingguide bar and push rod, press pin through both piston and rod untilpin is centered in piston. See Fig. 11. After pilot hub bottoms, DONOT exceed 5000 lbs. (2275 kg) pressure with press. Make certainpiston floats during pin installation operation.

Fig. 11: Replacing Piston Pins

CYLINDER BLOCK: CONNECTING ROD BEARINGS

NOTE: Following procedures are with oil pan and cylinder head removed. Selective fit bearings are used in this engine. DO NOT scrape gum or varnish deposits from bearing shells. Clean inserts and caps thoroughly in solvent. DO NOT file or lap bearing caps or use bearing shims to obtain proper bearing clearance.

1) Remove connecting rod bearing caps. Mark rods and caps forproper installation. Inspect each bearing for peeling, melting,seizure or improper contact. Replace defective bearings. UsePlastigage method for bearing clearance check.

2) Measure outside diameter of crankshaft connecting rodbearing journals to determine if out-of-round or tapered. Journal out-of-round must not exceed .0006" (.015 mm) per inch. Journal taper mustnot exceed .0006" (.015 mm).

CAUTION: If bearing is fitted to out-of-round crankpin, be sure to fit to maximum diameter of crankpin. If bearing is fitted to minimum diameter, interference between bearing and crankpin will result causing rapid bearing failure.

3) When checking connecting rod clearances, crankshaft doesnot have to be supported. Instead, turn crankshaft until connectingrod to be checked starts moving toward top of engine, thus unloadinglower bearing. 4) Cut Plastigage (D81L-6002-B) to width of rod bearing.Place Plastigage about .25" (6.35 mm) off-center (not over oil hole orgroove). Place in bearing cap, parallel with crankshaft. Install rodbearing and cap. Tightening in two steps to specifications. Alwaysinstall cap with markings in original position. 5) Do not turn crankshaft with Plastigage installed. Removerod bearing cap from crankshaft and measure Plastigage at its widestpart (using scale on Plastigage package). If clearance is found to beexcessive, new bearing will be required. See Fig. 12. 6) Service bearings are available in standard size and .0005"and .0010" undersize for use with new and used standard sizecrankshafts. After inspection and/or replacement, coat bearingsurfaces with heavy engine oil.

NOTE: Connecting rod bearing cap and rod identification numbers must remain on same side. Always replace bearings in pairs. Never combine new and used bearings.

7) Check for shiny surface on either side of piston pin boss,indicating bent connecting rod. Twisted rods will not createidentifiable wear patterns, but will disturb the action of entirecrankshaft assembly and may cause excessive oil consumption. 8) Check connecting rod side clearance with dial indicatorcontact point resting against rod cap. Pull cap toward front of engineand zero dial indicator. Push cap toward rear of engine and comparereading to specification. If excessive, replace connecting rod andcap. 9) If side clearance is less than specification, remove rodand cap. Check for scratches, burrs, nicks or dirt between crankshaftand rod. Dress minor imperfections with oil stone. 10) During assembly, ensure oil hole in bearing aligns withoil hole in connecting rod. Ensure bearing tangs are seated inappropriate slots in rod and cap. Ensure connecting rod bolt heads areproperly seated in connecting rod. Tighten connecting rod bolts in twosteps.

Fig. 12: Using Plastigage to Check Bearing ClearanceDO NOT turn crankshaft or Plastigage will smear.

CYLINDER BLOCK: MAIN BEARINGS

NOTE: Upper and lower main bearing halves are not interchangeable. Upper half is drilled and grooved for entry of oil.

1) Inspect each bearing for peeling, melting, seizure orimproper contact. Replace defective bearings. If copper-lead bearingbase is visible but is not showing in more than 20% of total area,bearing is not excessively worn.

2) Measure outside diameter of crankshaft main bearingjournals in at least four places to determine out-of-round or taper.Journal out-of-round must not exceed .0006" (.015 mm). Journal tapermust not exceed .0004" (.010 mm) per inch. Standard main bearingjournal runout is .002" (.05 mm) and service limit is .005" (.13 mm).

NOTE: Always replace bearings in pairs. Never combine new and used bearings. Observe location of high spots on main bearings. If high spots are not in line, crankshaft may be bent and should be checked.

3) To check main bearings, shim adjacent main bearings tobearing being checked. Alternate method is to position jack undercounterweight adjoining bearing being checked so weight of crankshaftwill not compress Plastigage and provide incorrect reading. 4) When checking No. 1 bearing, loosen accessory drive beltsto prevent tapered reading on Plastigage. DO NOT position jack undercrankshaft pulley. Crankshaft post damage will result. With allbearing caps tight (other than one being checked), check clearancesusing Plastigage method.

NOTE: If undersize bearings are used on more than one journal, position them in cylinder block rather than on bearing cap. Do not turn crankshaft with Plastigage installed.

5) If standard and undersize bearing combinations do notbring bearing clearance within specified limits, crankshaft will haveto be refinished and undersized bearings installed. If journal willnot clean up to maximum undersize bearing, replace crankshaft. 6) If journals are remachined, ensure same journal shoulderradius is reproduced. Too small a radius will result in fatiguefailure of crankshaft. Too large a radius will result in bearingfailure due to radial ride of bearing. 7) When journals are refinished, chamfer oil holes and polishjournals with No. 320 grit polishing cloth and engine oil. Afterchamfer and polish operations, clean crankshaft thoroughly in solventand blow out oil passages with compressed air. 8) Oil new upper bearing and insert plain (unnotched) endbetween crankshaft and notched side of block. Insert Main BearingRemover/Installer (6331) into hole in crankshaft and rotate bearing(opposite of engine rotation) into place. 9) Oil new lower bearing and install in bearing cap. Installmain bearing cap so that arrow faces front of engine. Tighten all mainbearing caps to specifications in two steps. When changing rear mainbearing, rear main seal must also be replaced. Refer to, in thisarticle, REAR MAIN BEARING OIL SEAL

CYLINDER BLOCK: THRUST BEARING ALIGNMENT

Install all main bearing caps except thrust bearing cap andtighten. Install thrust bearing cap with bolts, tighten finger tight.Pry crankshaft to front of engine. Then pry thrust bearing cap to rearof engine. While holding crankshaft forward, tighten main bearing capbolts. Check crankshaft end play. Crankshaft end play service limit is.012" (.31 mm).

CYLINDER BLOCK: CAM LOBE LIFT

1) Check lift of each camshaft lobe in consecutive order asfollows: Remove rocker arms and make sure each push rod is in valvelifter socket. Install dial indicator so ball socket adapter ofindicator rests on end of push rod, and in same plane as push rodmovement.

2) Connect auxiliary starter switch to starter solenoid. Turnignition switch off. "Bump" crankshaft until tappet is on base circleof camshaft lobe. This is push rod’s lowest point. 3) Zero dial indicator and continue to rotate crankshaftuntil push rod is in fully raised position: highest indicator reading.Compare total lift from indicator readings with specifications. 4) To check accuracy of dial indicator readings, continue torotate crankshaft until indicator reads zero. If lift on any lobe is .005" (.13 mm) less than specifications, valve lifters are operating onworn lobes. Replace camshaft and lifters as necessary.

CYLINDER BLOCK: CAMSHAFT BEARINGS

Removal 1) With camshaft, flywheel and crankshaft removed fromengine, push pistons to top of cylinders. Remove camshaft rear bearingbore plug. Using Camshaft Bearing Driver/Puller (T65L-6250-A), removecamshaft bearings. 2) During inner bearing removal, wrap cloth around threads ofpuller to protect front bearing or journal. To remove front bearing,install puller from rear of cylinder block.

CAUTION: Failure to use correct size expanding collet during camshaft bearing installation can cause severe bearing damage. Ensure front bearing is installed at specified distance from front face of cylinder block.

Installation 1) Bearings are available prefinished to size for standardand .015" (.38 mm) undersize journal diameters. Bearings are notinterchangeable from one bore to another. When installing newbearings, oil holes must be aligned. 2) Ensure pulling plate and puller screw are centered toavoid damage to bearing. Front bearing must be installed .005-.020" (.13-.51 mm) below front face of cylinder block. Apply sealer to outsidediameter and install camshaft bearing bore plug. To completeinstallation, reverse removal procedure.

CAUTION: When checking camshaft end play, DO NOT attempt to pry camshaft back and forth with valve train load on camshaft.

CYLINDER BLOCK: CAMSHAFT END PLAY

1) When checking end play, back off rocker arm adjustingbolts to relieve tension on camshaft. With engine front cover removed,push camshaft toward rear of engine and install dial indicator so thatindicator stylus is on camshaft sprocket cap screw. Zero dialindicator. 2) Position large screwdriver between camshaft sprocket andblock. Pull camshaft forward and release it. If dial indicator readingis not within specifications, replace thrust plate. Readjust valveclearance. Ensure lifters have enough time to bleed down beforestarting engine.

LUBRICATION

OVERVIEW

System has force feed with rotor type oil pump. Pressureregulator valve is located in oil pump body and is not adjustable. Alloil from pump flows through full flow oil filter before entering theengine. See Fig. 13. From oil filter, oil flows to main oil gallery

located on right side of camshaft to lubricate engine components.

Normal oil pressure is 40-60 psi (2.8-4.2 kg/cm�

) at 2000RPM.

CRANKCASE OIL CAPACITY

CRANKCASE OIL CAPACITY TABLE�����������������������������������������������������������������������������������������������������������������������

Application Quarts (Liters)

All w/o Filter ................................... 4 (3.8)All w/Filter ..................................... 5 (4.7)�����������������������������������������������������������������������������������������������������������������������

Fig. 13: Engine Oiling Circuit

COMPONENT LUBRICATION

Main Bearings

Oil from main gallery enters main bearings through drilledpassages in block.

Camshaft Bearings Passages are drilled from each main bearing to each camshaftBearing.

Connecting Rod Bearings Passages are drilled in crankshaft from main bearings toconnecting rod bearings.

Timing Chain Oil is forced through drilled passage from oil pumpintermediate shaft to groove in thrust plate and passes aroundcamshaft. Flow continues through two grooves in timing chain sprocketand is deflected onto timing chain.

Valve Lifters, Push Rods There are oil passages drilled from main oil gallery to eachlifter gallery. Oil hole in valve lifter is indexed to lifter oilgallery and oil flows into lifter. Oil from lifter is metered throughdisc metering valve and flows up hollow push rod. Drilled hole in pushrod is indexed to hole in rocker arm and oil lubricates the uppervalve train and bearings. Excess oil is returned to oil pan throughdrain back holes at each end of cylinder head and block.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS TABLE�����������������������������������������������������������������������������������������������������������������������

Application (1) Ft. Lbs. (N.m)

Camshaft Sprocket Bolt ..................... 40-45 (54-61)Camshaft Thrust Plate Bolt .................. 9-12 (12-16)Connecting Rod Nut ......................... 19-24 (26-32)Crossmember-to-Frame Bolts ................. 35-50 (47-68)Cylinder Front Cover Bolt ................... 12-18 (16-24)Cylinder Head Bolt ..................... (2) 65-72 (88-97)Damper-to-Crankshaft Bolt ................. 70-90 (95-122)Exhaust Manifold Retainer Bolt ............. 18-24 (24-32)Fan-to-Water Pump Hub Bolt ................. 12-18 (16-24)Flywheel Bolt ............................ 75-85 (102-115)Flywheel-to-Crankshaft Bolts ............. 75-85 (102-115)Fuel Pump-to-Front Cover Bolt .............. 19-27 (26-37)Intake Manifold Retainer Bolt .......... (3) 23-25 (31-34)Main Bearing Cap Bolt ...................... 60-70 (81-95)Motor Mount Through Bolts .................. 35-50 (47-68)Motor Mount-to-Crossmember Bolts ........... 57-65 (77-88)Motor Mount-to-Engine Bolts ................ 35-60 (47-81)Oil Pump Mount Bolt ............................... 22-32 (30-43) Inlet Tube-to-Pump Bolt .................. 10-15 (14-20) Inlet Tube-to-Bearing Cap Bolt ........... 22-32 (30-43)Pulley-to-Damper Bolt ...................... 35-50 (47-68)Rear Mount-to-Trans. Bolts ................. 50-70 (68-95)Rocker Arm Fulcrum Bolt .................... 18-25 (24-34)Valve Cover Bolts .............................. 3-5 (4-7)Water Pump Mount Bolt ...................... 12-18 (16-24)

INCH Lbs. (N.m)

Oil Pan .................................. 106-133 (12-15)

(1) - Always replace self-locking fasteners.(2) - Tighten in 2 steps: Step 1 - 55-65 ft. lbs. (75-88 N.m); Step 2 - 65-72 ft. lbs. (88-97 N.m).(3) - After assembly, retighten with engine at operating temperature.�����������������������������������������������������������������������������������������������������������������������

ENGINE SPECIFICATIONS

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS (5.0L) TABLE�����������������������������������������������������������������������������������������������������������������������

Application Specification

Displacement Cu. In. ............................................ 302 Liters ............................................. 5.0Fuel System ....................................... E.F.I.HP @ RPM ...................................... 165 @ 3200Torque Ft. Lbs. @ RPM ......................... 250 @ 1600Compr. Ratio ........................................ 8.4:1Bore .................................... 4.00" (101.60mm)Stroke ................................... 3.00" (76.20mm)�����������������������������������������������������������������������������������������������������������������������

GENERAL SPECIFICATIONS (5.0L HO) TABLE�����������������������������������������������������������������������������������������������������������������������

Application Specification

Displacement Cu. In. ............................................ 302 Liters ............................................. 5.0Fuel System .............................. E.F.I. & 4-Bbl.HP @ RPM ...................................... 210 @ 4400Torque Ft. Lbs. @ RPM ......................... 265 @ 3200Compr. Ratio ....................................... 8.3:1Bore .................................... 4.00" (101.60mm)Stroke ................................... 3.00" (76.20mm)�����������������������������������������������������������������������������������������������������������������������

CRANKSHAFT, MAIN & CONNECTING ROD BEARING

CRANKSHAFT MAIN & CON ROD BEARINGS SPECIFICATION TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Main Bearings Journal Diameter ........... 2.2482-2.2490 (57.10-57.12) Clearance .................... (1) .0004-.0025 (.01-.04) Thrust Bearing ................................... No. 3 Crankshaft End Play ................ .004-.008 (.10-.20)Connecting Rod Bearings Journal Diameter ........... 2.1228-2.1236 (53.92-53.94) Clearance .................... (2) .0008-.0015 (.02-.04) Side Play .......................... .010-.020 (.25-.51)

(1) - Maximum clearance is .0004-.0021" (.010-.050 mm).(2) - Maximum clearance is .0008-.0024" (.020-.060 mm).�����������������������������������������������������������������������������������������������������������������������

PISTON/PIN/RING SPECIFICATIONS

PISTONS, PINS & RINGS SPECIFICATIONS TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Pistons Clearance ...................... .0018-.0026 (.046-.066) Diameter Red .................... 3.9984-3.9990 (101.56-101.57) Blue ................... 3.9996-4.0002 (101.59-101.60) Yellow ................. 4.0020-4.0026 (101.65-101.66) Oversize .003"(.076mm) .. 4.0008-4.0014 (101.62-101.63)Pins Length ....................... 3.010-3.040 (76.45-77.21) Diameter Standard ................. .9119-.9124 (23.162-23.174) Oversizes .................. .001 & .002 (.025 & .050) Pin Bore ................. .9124-.9127 (23.174-23.182) Connect Rod Bore .......... .9096-.9112 (23.103-23.144) Piston Fit .................. .0002-.00045 (.005-.010) Rod Fit .................................... Press FitRings Ring No. 1 & No. 2 End Gap .......................... .010-.020 (.25-.51) Side Clearance ................... .002-.004 (.05-.10) Ring No. 3 End Gap ......................... .015-.055 (.38-1.40) Side Clearance .................................. Snug�����������������������������������������������������������������������������������������������������������������������

VALVE

VALVE SPECIFICATIONS TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Intake Head Diameter ................ 1.770-1.794 (44.96-45.57) Face Angle ......................................... 44

�

Seat Angle ......................................... 45�

Seat Width ....................... .060-.080 (1.52-2.03) Stem Diameter .................. .3416-.3423 (8.67-8.69) Stem Clearance .................. .0010-.0027 (.025-.069) Valve Lift ............................. (1) .375 (9.59)Exhaust Head Diameter ................ 1.453-1.468 (36.91-37.29) Face Angle ......................................... 44

�

Seat Angle ......................................... 45�

Seat Width ....................... .060-.080 (1.52-2.03) Stem Diameter .................. .3411-.3418 (8.66-8.68) Stem Clearance ................. .0015-.0032 (.038-.081) Valve Lift ............................. (2) .391 (9.99)

(1) - 5.0L HO is .413" (10.50 mm).(2) - 5.0L HO is .442" (11.23 mm).�����������������������������������������������������������������������������������������������������������������������

VALVE SPRING

VALVE SPRINGS SPECIFICATIONS (5.0L) TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Intake Free Length ............................... 2.05 (52.07) Installed Height ............. 1.672-1.703 (42.47-43.26) Pressure (1) Valve Closed ............ 74-82 @ 1.78 (35-38 @ 45.21) Valve Open ............ 196-214 @ 1.36 (93-97 @ 34.54)Exhaust Free Length ............................... 1.87 (47.49) Installed Height ............. 1.578-1.609 (40.08-40.87) Pressure (1) Valve Closed ............ 71-79 @ 1.60 (34-37 @ 40.60) Valve Open ............ 195-215 @ 1.15 (93-97 @ 29.21)

(1) - Lbs. @ In. (Kg @ mm).�����������������������������������������������������������������������������������������������������������������������

VALVE SPRINGS SPECIFICATIONS (5.0L HO) TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Intake Free Length ............................... 2.05 (52.07) Installed Height ............. 1.766-1.797 (44.85-45.64) Pressure (1) Valve Closed ............ 74-82 @ 1.78 (34-37 @ 45.21) Valve Open ............ 194-214 @ 1.33 (88-97 @ 33.78)Exhaust Free Length ............................... 1.87 (47.49) Installed Height ............. 1.578-1.797 (40.08-45.64) Pressure (1) Valve Closed ............ 71-79 @ 1.60 (32-36 @ 40.64) Valve Open ............ 195-215 @ 1.05 (88-98 @ 26.67)

(1) - Lbs. @ In. (Kg @ mm).�����������������������������������������������������������������������������������������������������������������������

CAMSHAFT

CAMSHAFT SPECIFICATIONS TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Clearance .......................... .001-.003 (.025-.076)Lobe Lift Intake ................................ (1) .2375 (6.03) Exhaust ............................... (1) .2474 (6.28)Journal Diameter No. 1 ...................... 2.0805-2.0815 (52.84-52.87) No. 2 ...................... 2.0655-2.0665 (52.46-52.49) No. 3 ...................... 2.0505-2.0515 (52.08-52.11) No. 4 ...................... 2.0355-2.0365 (51.70-51.73) No. 5 ...................... 2.0205-2.0215 (51.32-51.35)

(1) - 5.0L HO is .2780" (7.06 mm).�����������������������������������������������������������������������������������������������������������������������

OIL PUMP SPECIFICATIONS

OIL PUMP SPECIFICATIONS TABLE�����������������������������������������������������������������������������������������������������������������������

Application In. (mm)

Outer Race-to-Housing Clearance .. .0010-.0130 (.025-.330)Rotor End Play ........................... .004-Max. (.10)Shaft-to-Housing Clearance ....... .0015-.0030 (.038-.076)Relief Valve Spring Tension (5.0L) ................... (1)Relief Valve-to-Bore Clearance ... .0015-.0030 (.038-.076)

(1) - 10.6-12.2 Lbs. @ 1.704 In. (4.8-5.5 Kg @ 43.28 mm).�����������������������������������������������������������������������������������������������������������������������