Pontiac firebird 1968 - Page 549

8-8
1968 PONTIAC SERVICE MANUAL
SCREW 90 LB. IN.
VIEW B
VIEW B
VIEW 0
SCREW 90 LB. IN.
(4 BBL CARB. ENGINE)
NOTE: COAT ALL SLIP-JOINTS WITH SEALER BEFORE INSTALLING
Fig. 8-10 Tempest Six Cylinder Exhaust System
SIX CYLINDER HIGH PERFORMANCE ENGINE
(Figs. 8-10 and 8-11)
Exhaust Pipe—Remove and Replace
1. Loosen front (behind muffler) and rear tailpipe
support clamps.
2. Loosen exhaust pipe to muffler U-bolt clamp.
3. Disconnect muffler from exhaust pipe by moving
muffler and tailpipe assembly rearwards.
4. Loosen U-bolt clamp connecting exhaust pipe
to manifold Y pipe and remove exhaust pipe.
5. Remove four bolts holding Y pipe to exhaust
manifold and remove Y pipe.
6. To install, reverse above procedure. Tighten
Y pipe to manifold bolts 33 lb. ft. torque. Tighten
Y pipe to exhaust pipe U-bolt clamp 33 lb. ft. torque.
Tighten front muffler U-bolt clamp 18 lb. ft. torque.
Tighten tailpipe front U-bolt clamp (behind muffler)
18 lb. ft. torque. Tighten tailpipe to resonator U-bolt
clamp 33 lb. ft. torque.
NOTE: Coat inside diameter of front muffler
opening with sealer before installing exhaust pipe.
Muffler— Remove and Replace
1. Loosen front (behind muffler) and rear tailpipe
support U-bolt clamps.
2. Disconnect tailpipe from muffler.
3. Loosen exhaust pipe to muffler U-bolt and re-
move muffler.