Silverado Differential change

99Silver6.0 · January 25, 2003

Id like to get a 3.42:1 posi in my truck, instead of that limited slip crap. How do I go about doing this? I dont know much about rear ends at all. Thanks in advance!

TxDoc · January 25, 2003

Here are some links:

Eaton Locker

Eaton Electronic Locker

Detroit Electrac Locker

And, you will get many posts on other options.

Good Luck

99Silver6.0 · January 25, 2003

What about traction bars? What are peoples thoughts on them? Are they worth the money?

99Silver6.0 · January 26, 2003

Will a posi unit taken out of a late mdel f-body work in my truck? Or do they use different spline axles. SLP has limited slip diffs taken out of new f-bodies for sale on thier site and Iw as wondering if it would work or not. It's an O.E.M. Zexel-Torsen 7.5" & 7.625" differential its found in most 1998-2002 Camaros & Firebirds with 28 spline axles. I know nothing about the rear end in my truck so I dont know if it will work. Anybody know?

PFarkas · January 27, 2003

Traction bars are fine of you don't put a lot of weight in the bed. If you're having a problem with wheel hop, traction bars will help get rid of it.

As far as using the differential from a passenger car in a truck, I don't think I'd recommend it, unless you intend to use the truck as a car and not a truck.

The differential in your truck, at 8.5", is a bit larger than 7.5" and 7.625" ones that the F-bodies use for a reason. The F-bodies aren't intended to do the hauling work that the truck is.

Consider also that the re-sale value of your truck will tank if you swap a car differential into it.