1956 Corvette: Service Bulletin: Instability Above 60 MPH
Subject: Instability Above 60 MPH
Model and Year: 1956 Corvettes (Serial Numbers Listed)
Source: Chevrolet Technical Service Bulletin
Bulletin No: DR #267
Date: October 10, 1956
TO: ALL CHEVROLET DEALERS
When an unstable condition exist above 60 MPH on 1956 Corvettes between Serial No. E56S 3175 and E56S 4156, the parts listed below should be installed:
|Steering Idler and 3rd Arm Assembly||1||3733215|
|Special Caster Shim (Round 1" Diameter)
Install between idler arm bracket
and crossmember to lower Idler Arm.
|Special Shim (Tapered)
|Bolt 1-1/4" long||6||181639|
Wheel Alignment (Revised)
- Caster both sides 1-3/4o to 2-3/4o
- Camber both sides 0o to 1o
- Toe-in both sides 1/8"
All of the above applies to the 1957 Corvette.