Engine Replacement - GMC G Service Manual

Figure 42 — Rear Engine Mounting (P-Models with
Flywheel Housing Type Mounting)
H Install or Connect (Figure 42)
1. Engine mounting. Align the hole in the mounting with
the hole in the crossmember.
• Lower the engine.
NOTICE: See " Notice" on page 6A4-1 of this
section.
2. Spacer, cushion, and bolt.
[^ 0 Tighten
• Bolt to 90 N*m (65 ft. lbs.).

ENGINE REPLACEMENT

R/V MODELS
H Remove or Disconnect
1. Battery negative cable.
2. Hood.
• Drain the cooling system.
3. Air cleaner.
4. All accessory drive belts.
5. Fan and water pump pulley.
6. Radiator and shroud. Refer to RADIATOR
(SEC. 6B2).
7. Heater hoses at the engine.
8. Accelerator, cruise control, and detent linkage (if
equipped) from carburetor.
9. Air conditioning compressor (if equipped); lay aside.
Refer to AIR CONDITIONING (SEC. 1B).
10. Power steering pump (if equipped); lay aside. Refer
to POWER STEERING (SEC. 3B3).
11. Engine wiring harness from the engine.
12. Fuel lines.
13. Vacuum lines from the intake manifold.
• Raise the vehicle. Support with suitable safety
stands.
• Drain the crankcase oil.
14. Exhaust pipes from the manifolds. Refer to
EXHAUST (SEC. 6F).
15. Strut rods at the engine mountings (V-models with
automatic transmission).
16. Flywheel or torque converter underpan.
17. Wiring along oil pan rail.
18. Starter. Refer to ENGINE ELECTRICAL (SEC. 6D).
19. Wiring for fuel gage.
20. Converter to flex plate bolts.
• Lower the vehicle.
B-07899
• Support the transmission.
• Attach a suitable lifting fixture.
21. Bell housing to engine bolts.
22. Front engine mounting to frame bolts.
23. Engine.
M Install or Connect (Figures 34 and 35)
1. Engine to the vehicle.
• Raise the vehicle. Support with suitable safety
stands.
NOTICE: See " Notice" on page 6A4-1 of this
section.
2. Front engine mounting to frame bolts.
H Q Tighten
• Fasteners to specifications. Refer to figures 34
3. Bell housing to engine bolts. Remove the transmis­
sion support.
I^ O Tighten
• Bolts to 44 N«m (32 ft. lbs.).
4. Converter to flex plate bolts.
5. Fuel gage wiring.
6. Starter. Refer to ENGINE ELECTRICAL (SEC. 6D).
7. Wiring along oil pan rail.
8. Flywheel or torque converter underpan.
9. Strut rods at the engine mountings (V-models with
automatic transmission).
10. Exhaust pipes to the manifolds. Refer to EXHAUST
(SEC. 6F).
• Lower the vehicle.
11. Vacuum lines to the intake manifold.
12. Fuel line.
13. Engine wiring harness.
14. Power steering pump. Refer to POWER STEERING
(SEC. 3B3).
SMALL BLOCK 6A4-33
and 35.