i was just wondering how well my stock rearend will hold out. 7.5 gm 10bolt. going 12.99 @ 111 w/ 2.0-2.1 60' times.

 

It's a toss up. A guy in my club went well into the 10's before he broke his. He had slicks (traction), a 3000 Yank converter, a camshaft bigger than my house, and a 150 shot I believe.

This was an LS1 car (4th gen), but it is essentially the same 7.65 rear.

This isn't the only example either. Lot's of guys have gone into the 12's and 11's with these rearends. They break sometimes tho...

It's up to you! Do you have enough cash flow to replace a grenaded rear end? If not, do some prep work now - peace of mind and insurance. Check this article out!

https://www.thirdgen.org/newdesign/t...nguprear.shtml

 

is not having a posi unit going to effect it very much?

 

The more traction you get at the line, and the harder you can launch it, the sooner it will let out all its built-in shrapnel.

Looking at your 60' times, your rear will probably make it several more seasons, assuming no one-wheel-peel behavior and such as that (other abusive destruction).