Pontiac firebird 1968 - Page 548

FUEL TANK AND EXHAUST SYSTEM
8-7
Fig. 8-9 Fuel Gauge Tank Unit—Station Wagon—Pontiac
TEMPEST AND FIREBIRD EXHAUST SYSTEM
SERVICE PROCEDURES
L-6 ENGINE
SIX CYLINDER STANDARD ENGINE
(Figs. 8-10 and 8-11)
Exhaust Pipe—Remove and Replace
1. Remove two bolts from exhaust pipe flange at
manifold.
2. Loosen exhaust pipe to muffler U-bolt clamp
on Tempest or intermediate pipe on Firebirds.
3. Remove exhaust pipe from car.
4. Install exhaust pipe by reversing above pro-
cedure. Tighten exhaust pipe to manifold bolts 35
lb. ft. torque. Tighten exhaust pipe to muffler U-bolt
18 lb. ft. torque.
NOTE: Coat inside diameter of front muffler
opening with sealer before installing exhaust pipe.
Muffler— Remove and Replace
1. Loosen both tailpipe support clamps.
2. Slide tailpipe off rear of muffler on Tempest
models only.
3. Loosen U-bolt clamp at front of muffler.
4. Slide muffler off exhaust pipe.
5. Replace muffler by reversing above procedure.
Tighten exhaust pipe to muffler front U-bolt clamp
18 lb. ft. torque. Tighten tailpipe front support clamp
(behind muffler) 18 lb. ft. torque. Tighten tailpipe
rear support clamp 8 lb. ft. torque.
NOTE: Coat inside diameter of front muffler
opening and tailpipe flange with sealer before in-
stalling muffler.
Tailpipe—Remove and Replace
1. Loosen both tailpipe support clamps. On Fire-
bird models tailpipe must be cut off of muffler; it
is a welded connection.
2. Slide tailpipe off rear of muffler and remove.
3. To replace tailpipe, reverse above procedure.
Tighten tailpipe front support clamp (behind muffler)
18 lb. ft. torque. Tighten tailpipe rear support clamp
8 lb. ft. torque.
NOTE: Coat inside diameter of tailpipe flange
with sealer before installing.