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.