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I am interested in rebuilding the complete rear end in my 79 elky I was just wondering what kind of rear end should I be looking for, keep in mind I want to build this up to 500+RWHP so I need to have a solid base. Right now the engine and tranny are original so I need something thats going to bolt up. Is there anything out there or should I just wait till I get the new engine and tranny.

Thanks for the Help

ga79elky
 

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Don't bother trying to build up your 7.5" rear. Even if you built it to the hilt it'll never handle 500HP. Try to find an 8.5" from a G-body 442, T-Type, or Grand National. They have 3.42 and 3.73 gears. Or, install an older 8.5" A-body Chevy 12 bolt using a South Side Machine kit.

:mrgreen:
 

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The GM 12 Bolt and the FORD 9" are both really nice rear ends. The 12 Bolt is a little faster, takes less power, than the 9" but the 9" is a little bit stronger than the GM 12 bolt. Both can be made to handel what you will be producing.
 
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