Pontiac FIREBIRD 1972 Service Manual page 573

V-8
ENGINE 6-6 1
2. Connect crankcase ventilation hoses (if discon-
-
15. Remove intake manifold retaining bolts and remove
nected). manifold and gaskets.
3. Connect temperature wire at rocker arm cover clips. C A UTI 0 N: Make certain O-ring seal bet ween
intake manifold and timing chain cover is re-
4. Install air cleaner.
tained and installed during assembly if not da-
maged.
INTAKE MANIFOLD OR GASKET
REMOVE
Drain water from radiator and from each side of
cylinder block. (Most water can be drained from the
block through radiator drain by raising rear end of
car approximately 15" to 18" off floor).
Remove air cleaner and disconnect closed ventilation
pipe at air cleaner, air cleaner vacuum source at
manifold and hot air duct by loosening clamp holding
elbow to snorkel.
Remove water outlet fitting bolts and position fitting
out of way, leaving radiator hose attached.
Disconnect wire from thermogauge unit.
Remove spark plug wire brackets from manifold.
On cars equipped with power brakes, remove power
brake vacuum hose from carburetor.
Disconnect distributor solenoid to carburetor
vacuum hose.
Disconnect fuel line connecting carburetor and fuel
Pump.
Disconnect crankcase vent hose from intake mani-
fold.
Disconnect throttle cable from carburetor. On 307
engine, disconnect accelerator linkage at pedal lever.
307 Engine
-
Remove coil.
Remove screws retaining throttle control bracket as-
sembly on all but 307 engine.
Remove distributor cap and mark rotor positon with
chalk. Remove distributor clamp and distributor,
then psoition distributor cap rearward clear of mani-
fold.
REPLACE
When a new manifold is to be installed, transfer carbu-
retor, thermostat, heater hose adapter (307), choke coil
and thermogauge fitting. Use new gaskets on those units
requiring gaskets and new O-ring seal between manifold
and timing chain cover (all but 307 engine).
1. On all but 307 engines, install new gaskets on cylin-
der heads, positioning them with plastic retainers
(Fig. 6-100).
2. On 307 engine, install manifold end seals on block as
shown in Fig. 6-101.
3. On 307 engine, install side gaskets on cylinder heads
using sealing compound around water passages (Fig.
6- 100).
4. Install intake manifold on engine.
14. Remove generator upper bracket.
F ~ Q . 6-100 Intake Manifold Gasket Retainers