Allante V8-273 4.5L (1991)
Cylinder Head Bolts: Technical Service Bulletins
Crankshaft Balancer/Head Bolt/Torque - Revised
File in Section: 6 - Engine
Bulletin No.: 47-61-31
Date: November, 1994
Subject:
Revised Crankshaft Balancer/Cylinder Head Bolt Usage and Torque Specifications
Models:
1982-85 Cadillac Fleetwood Brougham
1982-93 Cadillac Eldorado, Seville
1982-95 Cadillac DeVille
1985-93 Cadillac Sixty Special/Fleetwood
1987-92 Cadillac Allante
with 4.1L, 4.5L or 4.9L Engines (VINs 3, 5, 7, 8, B - RPOs LT8, LC7, LR6, LQ6, LW2, L26)
Crankshaft balancer and cylinder head torque specifications are now revised. Specifications and new service procedures are defined below.
Crankshaft Balancer Bolt
The new crankshaft balancer torque specification is 160 Nm (118 lb.ft.). This torque specification applies to all engines equipped with a WASHER
FACE BOLT (see Figure 1) along with a separate washer.
