Rearend for 6-speed Z28 ??

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Turbo231
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Rearend for 6-speed Z28 ??

Post by Turbo231 » Wed Jul 18, 2018 9:52 am

I am looking for a "plug-n-play" rearend for a 2002 Z28, 6-spd. Building an engine for 500 rwhp. Doubt the stock 10-bolt would last long. People are saying I need a good 9-inch in it but I really don't want to spend that kind of $$. I also don't want to try to build the rear myself and prefer to find something ready to bolt in. Any recommendations?

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Re: Rearend for 6-speed Z28 ??

Post by lefty o » Wed Jul 18, 2018 11:42 pm

dont know whats in your budget, but anything is better than the 7.5 it came with.

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Alan Roehrich
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Re: Rearend for 6-speed Z28 ??

Post by Alan Roehrich » Thu Jul 19, 2018 5:30 am

GM used to have one in their catalog. I'm sure someone sells a bolt in 12 bolt, since an "OE" rear end is required in Stock Eliminator. Strange or Mark Williams or Moser.

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Re: Rearend for 6-speed Z28 ??

Post by Turbo231 » Thu Jul 19, 2018 11:43 am

Alan Roehrich wrote:
Thu Jul 19, 2018 5:30 am
GM used to have one in their catalog. I'm sure someone sells a bolt in 12 bolt, since an "OE" rear end is required in Stock Eliminator. Strange or Mark Williams or Moser.
Just found out that Strange has a 12-bolt. It is $2500 with discount I can get at work. Also found someone who builds a Ford 8.8 for about $2200. The 8.8 is a pretty good unit, and may weigh less than the 12-bolt, but I am not sure I could put anything Ford in my Camaro :oops:

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Re: Rearend for 6-speed Z28 ??

Post by SupStk » Thu Jul 19, 2018 1:24 pm

Turbo231 wrote:
Thu Jul 19, 2018 11:43 am
Alan Roehrich wrote:
Thu Jul 19, 2018 5:30 am
GM used to have one in their catalog. I'm sure someone sells a bolt in 12 bolt, since an "OE" rear end is required in Stock Eliminator. Strange or Mark Williams or Moser.
Just found out that Strange has a 12-bolt. It is $2500 with discount I can get at work. Also found someone who builds a Ford 8.8 for about $2200. The 8.8 is a pretty good unit, and may weigh less than the 12-bolt, but I am not sure I could put anything Ford in my Camaro :oops:
Since I didn't read where you were running Stock eliminator, any rear could work. A 9" Ford can be built without using any Ford parts, if that eases your conscience.
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Alan Roehrich
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Re: Rearend for 6-speed Z28 ??

Post by Alan Roehrich » Thu Jul 19, 2018 6:09 pm

I'd be surprised if Moser isn't lower in price, and more than adequate for your needs. They actually sponsor some Stock Eliminator racers (friends of mine), so they almost certainly have a bolt in housing.

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Re: Rearend for 6-speed Z28 ??

Post by MadBill » Thu Jul 19, 2018 11:08 pm

FWIW, a 12 bolt has significantly lower friction losses than a 9". (I posted a graph some time ago that I could put up again) Of course the 9" design is a big plus if you're ever changing ratios..
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Re: Rearend for 6-speed Z28 ??

Post by Turbo231 » Fri Jul 20, 2018 11:11 am

Alan Roehrich wrote:
Thu Jul 19, 2018 6:09 pm
I'd be surprised if Moser isn't lower in price, and more than adequate for your needs. They actually sponsor some Stock Eliminator racers (friends of mine), so they almost certainly have a bolt in housing.
Hey Alan, what gear ratio are most of the stock class LS1 cars running. I saw a video of the AS-class cars and couldn't believe the wheel stands they were pulling.

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Re: Rearend for 6-speed Z28 ??

Post by Alan Roehrich » Fri Jul 20, 2018 10:08 pm

Turbo231 wrote:
Fri Jul 20, 2018 11:11 am
Alan Roehrich wrote:
Thu Jul 19, 2018 6:09 pm
I'd be surprised if Moser isn't lower in price, and more than adequate for your needs. They actually sponsor some Stock Eliminator racers (friends of mine), so they almost certainly have a bolt in housing.
Hey Alan, what gear ratio are most of the stock class LS1 cars running. I saw a video of the AS-class cars and couldn't believe the wheel stands they were pulling.
Most of them run a 4.88:1 or a 5.14:1.There are probably some stick cars that can pull a 5.38:1.

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Re: Rearend for 6-speed Z28 ??

Post by F-BIRD'88 » Sun Jul 22, 2018 1:31 pm

I'd use a Chrysler 8-3/4" rear axle. from a Dodge Dart. They are plenty strong and easy to swap ratios with spare center pots.

The 7.5" will take a lot of power when set up right.

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