Intake Manifold Or Gasket; Left Side Exhaust Manifold Or Gasket; Intake Manifold Gasket Retainers - Pontiac Grand Prix Service Manual

V-8 ENGINE 6-45
Fig. 6-78 Intake Manifold Gasket Retainers
NOTE: Place manifold outlet in position over end of
exhaust pipe but do not permit weight of manifold to rest
of exhaust pipe. Since the end holes of gasket are slotted,
installation of gasket may be simpltjied by first installing
manifold, using only the front and rear bolts to retain
manifold. Allow clearance of about
$16"
between
cylinder head and exhaust manifold. Afier inserting
gasket between head and manifold, the remaining bolts
may be installed.
3. Tighten all bolts evenly and securely to 30 lb. ft.
torque. Bend tab of screw locks against bolt heads.
NOTE: Be sure tabs are bent against sides of bolt head,
not on top of bolt heads.
4. Attach exhaust pipe to manifold with bolts and
tighten to 30 Ib. ft.
LEFT SIDE EXHAUST MANIFOLD OR GASKET
REMOVE
1. Remove generator belt and remove generator and
mounting bracket as an assembly.
2. Disconnect exhaust pipe from manifold.
3. Remove carburetor air pre-heater shroud.
4. Straighten tabs on manifold individual bolt locks.
(Tabs can be straightened from beneath car by using
long-handled screwdriver.)
NOTE: Locks are used on front and rear pairs of bolts
only.
5. Remove manifold attaching bolts and remove
manifold.
REPLACE
1. Thoroughly clean gasket surfaces of cylinder head
and exhaust manifold.
2. Place manifold in position against cylinder head and
install two end bolts, finger tight.
3. Slide gasket between manifold and cylinder head.
4. Install remaining bolts and new bolt locks.
5. Tighten all bolts evenly and securely to 30 Ib. ft.
torque. Bend tabs of bolt lock against bolt heads.
6. Install carburetor air pre-heater shroud.
7. Attach exhaust pipe to manifold and tighten to 30
lb. ft. torque.
INTAKE MANIFOLD OR GASKET
REMOVE
1. Drain water from radiator and from each side of
cylinder block.
NOTE: Most water can be drained from the block
through radiator drain by raising rear end of car
approximately 15" to 18" offfloor.
2. Remove air cleaner and disconnect closed ventila-
tion pipe at air cleaner, air cleaner vacuum source at
manifold and hot air duct by loosening clamp holding
elbow to snorkel.
3. Remove water outlet fitting bolts and position fitting
out of way, leaving radiator hose attached.
4. Disconnect heater hose from fitting.
5. Disconnect wire from thermogauge unit.
6. Remove spark plug wire brackets from manifild.
7. On cars equipped with power brakes, remove power
brake vacuum pipe from carburetor.
8. Disconnect distributor to carburetor vacuum hose.
9. Disconnect fuel line connecting carburetor and fuel
Pump.
10. Disconnect crankcase vent hose from intake
manifold.
11. Disconnect throttle rod from carburetor.
12. Remove screws retaining throttle control bracket
assembly.
13. Remove intake manifold retaining bolts and nuts,
and remove manifold and gaskets.
NOTE: Make certain O-ring seal between intake
manifold and timing chain cover is retained and
installed during assembly if not damaged.
REPLACE
NOTE: When a new manifold is to be installed, transfer
carburetor, thermostat, heater hose fitting and
thermogauge fitting. Use new gaskets on those units