Source: Chevrolet Service News
Date: July-August, 1959
Subject: Drive Line Vibration -- Corvette
If excessive drive line vibration is encountered on a 1959 Corvette it is probably due to excessive rear C-joint angle. This vibration can be eliminated by installing either a 2 or 3 degree rear axle shim. The shim should be installed between the rear axle pads and springs, on both sides, with the thick edge to the front.
The minimum angle of the rear U-joint is 7 ½ degrees. If this angle is reduced to less than 7 ½ degrees, interference will result in the full bump position.
Measurements of the propeller shaft and pinion nose angle may be accomplished as follows:
Shims #3722797 (2 deg), #3744488 (3 deg), or their equivalent may be utilized. The locating tab on the above shims should be removed to allow the shim to lie flat.
© Copyright General Motors Corporation. All Rights Reserved
Article ID: 51
Created On: Wed, Jul 2, 2014 at 8:55 PM
Last Updated On: Wed, Jul 2, 2014 at 9:07 PM
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/1959-corvette-service-news-drive-line-vibration-corvette-51.html