Valve Train Component Installation - GMC T Series 1994 Repair Manual

• Place the gasket in position over the dowel pins
with the bead up.
2. Cylinder head. Carefully guide the cylinder head
into place over the dowel pins and head gaskets.
3. Cylinder head bolts. Coat the threads of the bolts
with sealing compound (Loctite #592 or equivalent)
and install finger tight.
Tighten
• Bolts in three steps using the sequence shown
in figures 90 or 91 until the proper torque is
reached:
— 5.0L and 5.7L engines:
A. The first sequence to 35 N-m (25 lbs. ft.).
B. The second sequence to 60 N-m (45 ft.
lbs).
C. The final torque sequence to 90 N-m (65
lbs. ft.).
— 7.4L engines:
A. The first sequence to 40 N-m (30 lbs. ft.).
B. The second sequence to 80 N-m (60 ft.
lbs).
C. The final torque sequence to 110 N-m
(80 lbs. ft.).
VALVE TRAIN COMPONENT
INSTALLATION
Important
Replace all hydraulic lifters if a new camshaft was
installed.
-►+
Install or Connect (Figures 88 and 89)
• Lubricate the hydraulic lifter bodies and feet with
Engine Oil Supplement (GM P/N 1051396 or equiv­
alent).
1. Hydraulic lifters (44 or 209) to the block.
2. Pushrods (43 or 210). Seat the pushrods into the
socket in the hydraulic lifters.
• The 7.4L engine uses different length intake
and exhaust pushrods. The exhaust valve push­
rods are longer than the intake valve pushrods.
46. HEAD, CYLINDER
47. GASKET, CYLINDER HEAD
51. BOLT, CYLINDER HEAD
144. BLOCK, ENGINE
A. Sealing Compound
74. Gasket
75. Bolt
76. Oil Pan
Figure 85— Oil Pan (7.4L Engines)
144
F9331
V2880