7701 Dixie Hwy.
Louisville, Ky 40258

Get your Rear End in gear and check out our low prices on Hi-Performance parts.

This Chart is at 55 mph at 1 to 1 Final Drive!

This will not work for overdrive transmissions!


measurements are from flange to flange

* Denotes  gray area involving some of the earlier part being found on 70 Model year cars. Note: After 1970 all axles were the 31 spline style big axles. For 28 spline units the last 4 inchs were machined down for the 28 spline ends. If you shorten the axles more than 4 inches they are enough to make 31 spline.


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