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Old 05-14-2014, 11:03 AM   #20
Tx Firefighter
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Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
Re: rear end swap for different gear ratio

Quote:
Originally Posted by oldcane View Post

Sine you guys are all over the 3.42, which is a great ratio, I've heard that the 81 trans-am (disc) rear is a 3.42 posi that will fit these trucks. Is that right? Thats 4 birds with one stone (5-lug/disc/posi/3.42). Sounds like a win/win/win/win if it's true.
.....different bolt pattern than trucks use. Mismatched front and rear patterns if you go that route.

an 88-98 truck was very, very, very common with 3.42 gears (like 80 percent of them). Find one with the G80 code on the glove box sticker and you've got a locker too. And it uses the common 5x5 pickup bolt pattern.
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