Firebird V8-305 5.0L (1982)
Cylinder Head Gasket: Technical Service Bulletins
Cylinder Head Gaskets - New Design
Number 87-6(Gasoline)-58
Date 8/87
Subject:
NEW CYLINDER HEAD GASKETS
1987 AND PAST MODEL YEAR VEHICLES EQUIPPED WITH 4.3L, 5.0L OR 5.7L 90 DEGREE V ENGINES
An improved cylinder head gasket of composite construction has been released to replace the metal gasket. The new gasket has improved sealing
capabilities. The new part numbers shown below should be used for service.
APPLICATION
CYLINDER HEAD GASKET
4.3L
10066080
5.0L
10066081
5.7L
10066082
Engines manufactured after the following build dates should have the composite gasket.
Engine
Build Date
Engine Build Code
4.3L
May 15, 1987
T0515XXX
5.0L
July 1, 1987
V0701XXX
K0701XXX
5.7L
July 1, 1987
V0701XXX
K0701XXX