NEW to rear ends
#1
NEW to rear ends
Hello I’m new to this forum site, I am currently an owner of a 83 cutlass supreme 350 small block with a mild cam headers exhaust system, just by giving these details you see I’m not really pushing track horsepower what I’m wanting to know today is from what car can I find a bolt-on rear end that is a 8.5 with 28 spline axles. I plan on putting in a Posi with 3.73 gears. Any advice can help weather where I can find one on a website that sells one or a car that I can find in the junkyard.
#2
Hello I’m new to this forum site, I am currently an owner of a 83 cutlass supreme 350 small block with a mild cam headers exhaust system, just by giving these details you see I’m not really pushing track horsepower what I’m wanting to know today is from what car can I find a bolt-on rear end that is a 8.5 with 28 spline axles. I plan on putting in a Posi with 3.73 gears. Any advice can help weather where I can find one on a website that sells one or a car that I can find in the junkyard.
Yes, people have used the A-body axles under the G-body. The mounting ears are in the wrong place, so unless you use the special control arms with metal ball joints, the suspension binds up. These are not inexpensive. The A-body axle is also 4"-6" wider than the G-body, depending on year.
#4
If your real question is "affordable" axle, you are out of luck. As I said, the G-body community has run the price of the bolt-in 8.5 out of site. Unless you want to pay dearly for a brand new axle like Moser or Currie, there are no other "bolt in" solutions. Others have adapted the Ford 8.8. That still requires custom control arms, redrilled axle flanges, and a custom driveshaft.
#6
#7
Find a good used gear set out of 3.42 or 3.73 gears out of the 4 gen Camaro, they are 7.625" whch will fit, with the Torsen worm gear posi, just the gears an carrier. Or a new quality gear set with the Detroit Trutrac, basically the same posi. Also get a girdle cover and 28 spline Moser axles.
#8
'94 and up Mustang 8.8.
BUY: Adjustable upper control arms, spherical bearings for upper housing bushings, 1310-3R-Gr u-joint, Ford driveshaft flange, drill guide for bolt pattern ( http://www.rottenleonard.com/Menu.html )
Cut off old spring perches
Weld on spring perches
Drill the axles
Even the center brake line threads into the factory G Body one.
https://gbodyforum.com/threads/8-8-i...p-enjoy.17317/
BUY: Adjustable upper control arms, spherical bearings for upper housing bushings, 1310-3R-Gr u-joint, Ford driveshaft flange, drill guide for bolt pattern ( http://www.rottenleonard.com/Menu.html )
Cut off old spring perches
Weld on spring perches
Drill the axles
Even the center brake line threads into the factory G Body one.
https://gbodyforum.com/threads/8-8-i...p-enjoy.17317/
#9
Easy bolt in
Well I would say a MUSTANG rear is not an easy bolt in direct option for this guy NEW TO DIFFERENTIALS...lol
You 7.5 will survive quite well
We have done plenty of 28 spline axle upgrades and a good aftermarket Eaton or Auburn limited slip posi and aftermarket ring and pinion with great success.
The motor and combo you have on the street will be absolutely fine with the stock rear upgraded.
If you PM I think we have a set of 28 spline axles NO BOX deal and limited slip and gear no box deals we get all the time from buying out tranny shops that do not want to do rear ends anymore. Performance show table display stuff etc.
We usually just put it up on eBay to unload.
Give a PM will help you out.
Jim
J D
You 7.5 will survive quite well
We have done plenty of 28 spline axle upgrades and a good aftermarket Eaton or Auburn limited slip posi and aftermarket ring and pinion with great success.
The motor and combo you have on the street will be absolutely fine with the stock rear upgraded.
If you PM I think we have a set of 28 spline axles NO BOX deal and limited slip and gear no box deals we get all the time from buying out tranny shops that do not want to do rear ends anymore. Performance show table display stuff etc.
We usually just put it up on eBay to unload.
Give a PM will help you out.
Jim
J D
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