7.5 rear end...

[badfast47]

Putting together a pure stock with a 77 caprice. These gears hold up ?

[Dirtman29]

The GM 8.5" is almost as strong as a ford 9" IMO, Im putting an 8.5 in my car for next season (per track rules). I ran them rearends years ago and never had an issue.

Stay away from the 7.5" GM, unless you put moser axles in it, weak as he11 in stock form.

[badfast47]

From what i have read the 8.5 axles are a 28 spline and that the axle bearing is the weakest point. So if i use it i will replace the bearings and see what happens.

[badfast47]

Checked the rear end and found out it is a 7.5. :(