9" Diff conversion

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Jan 28, 2012 | 11:44 AM

dpw21562

Thread Starter

Racer

Joined: Jan 2009

Posts: 462

Likes: 1

From: Westernport Maryland

9" Diff conversion

Has anyone converted the "80" diff to a 9" center section OR know a company that does one? It has to handel 575 HP.

Last edited by dpw21562; Jan 28, 2012 at 01:51 PM.

Jan 28, 2012 | 12:54 PM

uxojerry

Burning Brakes

Joined: Sep 2011

Posts: 896

Likes: 7

Downs industries does a ford 9" for a corvette. You can also go with a Dana from a C4.

Jan 28, 2012 | 06:35 PM

Bee Jay

Safety Car

Joined: Nov 2005

Posts: 3,960

Likes: 572

From: Lompoc, CA. Santa Barbara County

Quote:

Originally Posted by uxojerry

Downs industries does a ford 9" for a corvette. You can also go with a Dana from a C4.

Will a c4 Dana 44 bolt up to an 80-82 C3 batwing?

Jan 28, 2012 | 06:42 PM

tracdogg2

Drifting

Joined: Jul 2002

Posts: 1,995

Likes: 110

From: Garland Texas

nope

Jan 28, 2012 | 07:17 PM

TheSkunkWorks

Le Mans Master

Joined: Apr 2007

Posts: 7,353

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From: Graceland in a Not Correctly Restored Stingray

Bee Jay, for whatever reason the C4 D44 doesn't share the same mating surface or bolt pattern with the C3 D44, so an adapter/mid-plate would have to be designed and fabbed up, which would add weight and length... However, if you can justify the effort and expense you could always fab up new mounts for mate the narrower C4 batwing to your chassis. FWIW, you might well be a good candidate for just doing the whole C4 rear suspension while you're at it.

Jan 29, 2012 | 05:21 AM

Jason Staley

Melting Slicks

Joined: Dec 1999

Posts: 2,116

Likes: 156

From: Mid West

Cruise-In III Veteran

This is probably more than your looking for, but Heidts makes a 9" based independent (similar to a Jag I think) rear suspension. It replaces everything from hub to hub.

http://www.heidts.com/heidts_superid...e_package.html

Feb 18, 2012 | 03:49 AM

Jason Staley

Melting Slicks

Joined: Dec 1999

Posts: 2,116

Likes: 156

From: Mid West

Cruise-In III Veteran

Here's another option I just ran across from Dutchman Motorsports.

http://www.dutchmanaxles.com/product...rd-independent

Feb 18, 2012 | 06:41 AM

TPIShark

Pro

Joined: Oct 2002

Posts: 733

Likes: 15

From: Clarksburg NJ

Quote:

Originally Posted by Jason Staley

For high HP, I really don't like the small halfshafts on this that also act as the upper control arm. Go with the Tom's components offered by some of the retailers on here. 12-bolt based to "Keep your GM all GM".