8.5" rear end swap

Reply Subscribe

Thread Tools

Search this Thread

Jun 26, 2012 | 12:49 PM

92-Z28

Thread Starter

Junior Member

Joined: Dec 2011

Posts: 92

Likes: 0

Car: 92 Z28

Engine: 350ci

Transmission: Th350

Axle/Gears: 3.73

8.5" rear end swap

Im getting sick of the 7.5" rear end and I did a swap a 8.5 out of impala 95 rear end on my '82 truck and Im loving it and Im thinking of doing the same to my '92 Z28,my z28 has full suspension with aftermarket aluminum driveshaft and Im concerned about the length of the driveshaft after the swap because I dont want to cut/weld it did anyone here did this swap? I searched for topics and didnt find any

Last edited by 92-Z28; Jun 26, 2012 at 12:54 PM. Reason: Removed swear words

Jun 26, 2012 | 05:12 PM

AlkyIROC

Moderator

Joined: Jul 1999

Posts: 17,271

Likes: 171

From: 51°N 114°W, 3500'

Car: 87 IROC L98

Engine: 588 Alcohol BBC

Transmission: Powerglide

Axle/Gears: Ford 9"/31 spline spool/4.86

Re: 8.5" rear end swap

Swapping into a truck with leaf springs is easy. Swapping any kind of non third/fourth gen diff into a third gen isn't quite so easy. The torque arm suspension doesn't easily swap over.

Jun 26, 2012 | 08:44 PM

83RDRACR

Senior Member

Joined: Aug 2007

Posts: 682

Likes: 45

Re: 8.5" rear end swap

I put a zr2 rearaxle in my 83z and had to shorten the drive shaft 1 1/4 inches. I built a custom 3 link so no torq arm issues for me. Check this forum under home brew road racer.

Last edited by AlkyIROC; Jun 26, 2012 at 10:26 PM.