Engine Mountings-Typical; Rear Mount; Right Side Exhaust Manifold Or Gasket; Left Side Exhaust Manifold Or Gasket - Pontiac TRANS AM 1977 Service Manual

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301-350-400 V 8 ENGINE VI CODES Y-P-Z
6A5-5
ENGINE BLOCK
CENTERLINE
OF MOUNT
3
OFFSET
FORWARD
FRONT
-
1
--
3368
FIG. 6A5-10 ENGINE MOUNTINGS - TYPICAL
6. Lower engine.
7. Install engine bracket to mount bolt and tighten.
REAR MOUNT
Remove and Replace
1. Support transmission at rear to remove engine weight
from rear mount, using suitable lifting equipment.
2. Remove attaching nuts or bolts at mount/
crossmember, and raise transmission until mount is clear of
lower cross member support.
3. Remove mount upper retainer bolts from transmission
extension.
4. Remove mount assembly. (Retain shim when used for
reinstallation)
5. Install by reversing above procedure, torquing all nuts
and bolts to 30 lb. ft.
RIGHT SlDE EXHAUST
MANIFOLD OR GASKET
Remove
1. Disconnect exhaust pipe from manifold.
2. Remove manifold attaching bolts, manifold, and
gaskets.
NOTE: It may be necessary to loosen flange bolts on
opposite side manifold to gain clearance for removal.
Replace
1. Thoroughly clean gasket surfaces of cylinder head and
exhaust manifold.
2. Install exhaust manifold and new gasket.
3. Place manifold outlet in position over end of exhaust
pipe but do not permit weight of manifold to rest on exhaust
pipe. Since the end holes of gasket are slotted, installation of
gasket may be simplified by first installing manifold, using
only the front and rear bolts to retain manifold. Allow
clearance of about 1/8" between cylinder head and exhaust
manifold. After inserting gasket between head and manifold,
the remaining bolts may be installed.
4. Tighten all bolts evenly and securely to 40 lb. ft.
5. Attach exhaust pipe to manifold with bolts and tighten
to 30 Ib. ft.
LEFT SlDE EXHAUST MANIFOLD
OR GASKET
Remove
1. Remove carburetor air pre-heater shroud.
2. Raise vehicle and disconnect exhaust pipe from
manifold.
3. Remove manifold attaching bolts and remove
manifold.
NOTE: It may be necessary to loosen flange bolts on
opposite side manifold to gain clearance for removal.

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Firebird 1977

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