Why It Matters
The W-30 used the corporate 8.5-inch 10-bolt with Anti-Spin; air-conditioned cars used 3.23 gearing and non-air-conditioned cars used 3.42 gearing.
Also Known As
1974 Hurst Olds 3.42 axle1974 Hurst Olds 3.23 axle1974 Oldsmobile Anti-Spin 10-bolt
