Fleetwood V8-368 6.0L VIN 9 FI (1982)
Crankshaft Main Bearing: Technical Service Bulletins
Engine - Main Bearing Application
File In Section: 6 - Engine
Bulletin No.: 81-61-03B
Date: November, 1995
INFORMATION
Subject:
Main Bearing Usage
Models:
1982-84 Cadillac DeVille (RWD)
1982-85 Cadillac Fleetwood Brougham (RWD)
1982-93 Cadillac Eldorado
1982-93 Cadillac Seville
1985-93 Cadillac Fleetwood, Sixty Special
1987-92 Cadillac Allante
1987-94 Cadillac DeVille
This bulletin is being revised to provide additional crankcase identification information and correct artwork. Please discard Corporate Bulletin Number
81-61-03A (Section 6 - Engine).
This summary of main bearing applications is intended to clarify current bearing availability and to identify which bearings are in 1982-1994 engines.
This information is not intended to supersede the GMSPO parts books and future parts catalog revisions. Superseded part numbers will be handled
through GMSPO.
During the 1991 model year, the cylinder block used for the 4.5L and 4.9L transverse V8 engines received a series of structural enhancements that have
made dimensional adjustments in main bearing clearance necessary to prevent main bearing knock (mallet noise) in some vehicles. These crankcase
changes are not incorporated in all 1991 vehicles but are included in all 1992 and later engines. The improved crankcase is also used to assemble service
engine assemblies produced after September 1, 1991 (i.e., a service engine built in 1992 calendar year for use in any model year including past models
will include the structurally updated transverse crankcase). Refer to Figures 1 and 2 to identify the updated crankcase.
