Camaro L4-151 2.5L (1982)
Crankshaft Main Bearing: Technical Service Bulletins
Rear Main Bearing Cap Groove - Elimination
Number:
84-129
Section:
6A (VI)
Date:
May, 1984
Subject:
ELIMINATION OF REAR MAIN BEARING CAP GROOVE - 2.5L L4 ENGINES
Model and Year: 1980-84 CITATION, AND 1982-84 CELEBRITY AND CAMARO
TO:
ALL CHEVROLET DEALERS
The groove in the rear main bearing cap, which was used to retain the oil pan gasket seal in prior years, has been eliminated.
This change should have no effect on service procedures other than a reduction in the amount of sealant required for oil pan
installation.
Past model service engine blocks, 1982 and prior years, may or may not have the groove and will have to be serviced using the
appropriate procedures for the application. Gaskets cannot be used on engines without the bearing cap groove.
