Pontiac firebird 1968 - Page 557

8-16
1968 PONTIAC SERVICE MANUAL
Exhaust Pipe—Remove and Replace
1. Loosen crossover pipe to exhaust pipe U-bolt
clamp.
3. Loosen tail pipe or resonator assembly rear
bracket clamp.
4. Remove tail pipe.
2. Loosen exhaust pipe to muffler front U-bolt
clamp.
3. Loosen tail pipe front bracket clamp (behind
muffler).
4. Loosen tail pipe or resonator assembly rear
bracket clamp.
5. Move exhaust pipe, muffler and tail pipe
rearwards.
6. Remove exhaust pipe from crossover pipe and
muffler.
7. To install, reverse above procedure. Coat in-
side diameter of exhaust pipe with sealer before
installing on crossover pipe. Coat inside diameter
of muffler opening with sealer before installing ex-
haust pipe. Tighten exhaust pipe to crossover pipe
clamp bolts 30 lb. ft. torque. Tighten muffler to
exhaust pipe clamp bolts 14 lb. ft. torque.
Muffler— Remove and Replace
1. Loosen U-bolt clamp at front of muffler.
2. Loosen tail pipe front bracket clamp (behind
muffler).
3. Loosen tail pipe or resonator assembly rear
bracket clamp.
4. Move exhaust pipe, muffler and tail pipe
rearwards.
5. Remove muffler.
6. Replace muffler by reversing steps. Coat muf-
fler openings with sealer before installing muffler
over exhaust pipe and tail pipe. Tighten exhaust
pipe to muffler front U-bolt clamp 14 lb. ft. torque.
Tighten tail pipe front bracket clamp (behind muffler)
14 lb. ft. torque.
5. Replace tail pipe by reversing above procedure.
NOTE: Coat outside diameter of rear muffler
opening with sealer before installing tail pipe.
Tighten tail pipe front bracket clamp bolts 14
lb. ft. torque. Tighten tail pipe rear bracket
screw 13 lb. ft. torque.
Resonator— Remove and Replace
1. Loosen resonator assembly to tail pipe clamp.
2. Loosen resonator assembly rear bracket clamp.
3. Remove resonator assembly.
4. Replace resonator assembly by reversing re-
moval procedure. Tighten resonator to tail pipe
clamp to 30 lb. ft. torque. Tighten resonator to
frame bracket 8 lb. ft. torque.
DUAL EXHAUST SYSTEM (Figs. 8-16 and 8-17)
Exhaust Pipes—Remove and Replace
1. Disconnect exhaust pipe from manifold, loosen
front muffler clamp and slide exhaust pipe forward
and remove.
2. To install, reverse above procedures.
NOTE: Coat inside diameter of front muffler
opening with sealer before inserting exhaust pipe.
Muffler—Remove and Replace
Follow same procedure used for single exhaust
system.
Tail Pipe—Remove and Replace
Follow same procedure used for single exhaust
system.
Resonator— Remove and Replace
Follow same procedure used for single exhaust
system.
Tail Pipe—Remove and Replace
1. Jack rear of car up to allow clearance between
frame and rear axle housing.
2. Loosen tail pipe front bracket clamp (behind
muffler).
GENERAL SPECIFICATIONS
Fuel Tank Capacity (approx.)
Firebird 18.5 U.S. gals.
Tempest .............. 20 U.S. gals.
Pontiac (Except Station Wagon) . . 26 U.S. gals.
Pontiac Station Wagons 25 U.S. gals.