GMC 1989 Light Duty Truck, Repair Manual, Page: 491 / 998

6A5-1
SECTION 6A5
V8 ENGINE
5.0 LITER (305 Cu. In.)
5.7 LITER (350 Cu. In.)
7.4 LITER (454 Cu. In.)
CONTENTS
S U B J E C T P A G E
D escription.................................................................................................................................................................................... 6 A 5 - 2
Engine Id e n tific a tio n ............................................................................................................................................................. 6 A 5 - 2
Disassem bly..................................................................................................................................................................................6 A 5 - 6
Tools and Shop Equipm ent..................................................................................................................................................6 A 5 - 6
Accessory R em o v al............................................................................................................................................................... 6 A 5 - 6
C le a n in g ....................................................................................................................................................................................6 A 5 - 6
Draining the E n g in e............................................................................................................................................................... 6 A 5 - 6
Exhaust Manifold R e m o v a l..................................................................................................................................................6 A 5 - 6
W ater Pump R e m o v a l........................................................................................................................................................... 6 A 5 - 6
Intake Manifold R em oval...................................................................................................................................................... 6 A 5 - 6
Rocker Arm Cover R e m o v a l................................................................................................................................................6 A 5 - 7
Valve Train Component R em o val...................................................................................................................................... 6 A 5 - 7
Cylinder Head R em o val............................................................................................................. ........................................... 6 A 5 - 8
Torsional Damper R em oval..................................................................................................................................................6 A 5 - 8
Oil Pan Rem oval...................................................................................................................................................................... 6 A 5 - 8
Oil Pump R em o v al..................................................................................................................................................................6 A 5 - 8
Front Cover R em oval............................................................................................................................................................. 6 A 5 - 8
Timing Chain and Camshaft Sprocket R e m o v a l........................................................................................................... 6 A 5 - 9
Camshaft R e m o v a l.................................................................................................................................................................6 A 5 - 9
Piston and Connecting Rod R e m o v a l............................................................................................................................. 6 A 5 - 9
Flywheel R e m o v a l..................................................................................................................................................................6 A 5 -1 3
Rear Crankshaft Oil Seal Retainer Removal (5.0 L and 5.7
L E n g in e s )................................................................ 6 A 5 -1 3
Crankshaft Rem oval............................................................................................................................................................... 6 A 5 -1 3
Cleaning, Inspection, and R epair...........................................................................................................................................6 A 5 -1 4
B lo c k ...........................................................................................................................................................................................6 A 5 -1 4
Piston and Connecting Rod A ss em b lies .........................................................................................................................6 A 5 -1 5
Intake and Exhaust M anifold............................................................................................................................................... 6 A 5 -1 6
C am shaft....................................................................................................................................................................................6 A 5 -1 6
Camshaft Bearings..................................................................................................................................................................6 A 5 -1 7
Timing Chain and Sprockets............................................................................................................................................... 6 A 5 -1 7
Front Cover............................................................................................................................................................................... 6 A 5 -1 7
W ater P u m p .............................................................................................................................................................................6 A 5 -1 7
Oil Pan and Rocker Arm C overs.........................................................................................................................................6 A 5 -1 8
Oil P u m p ............................................................. ......................................................................................................................6 A 5 -1 9
Valve Train Com ponents...................................................................................................................................................... 6 A 5 -1 9
Cylinder H ead...........................................................................................................................................................................6 A 5 -2 0
Thermostat and Water O u tle t............................................................................................................................................. 6A 5 -2 4
Torsional Damper....................................................................................................................................................................6 A 5 -2 4
Crankshaft and B earings...................................................................................................................................................... 6 A 5 -2 4
Oil Filter Bypass V a lv e ........................................................................................................................................................ 6 A 5 -2 5
Rear Crankshaft Oil Seal Retainer (5.0 L and 5.7
L E n g in e s ).................................................................................. 6 A 5 -2 6
Assembly of E n g in e ................................................................................................................................................................. 6 A 5 -2 6
Prior to A s s e m b ly ........... ..................................................................................................................................................... 6 A 5 -2 6
Rear Crankshaft Oil Seal Installation (7.4 L E n g in e s )................................................................................................6 A 5 -2 6
Crankshaft and Main Bearing In s ta lla tio n ...................................................................................................................... 6 A 5 -2 7