3.73 gear help

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Oct 22, 2008 | 09:37 PM

1970 Buick

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Joined: May 2008

Posts: 294

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From: Eastern Shore, MD

Car: 1989 GTA

Engine: 350 TPI

Transmission: 700R4

Axle/Gears: 3.23

3.73 gear help

HI, I have an 89 GTA. I am thinking of swapping up to 3.73's. I think I have 3.23..maybe? I have a 10 bolt rear and it is an automatic. What I need are part numbers and where to get these. Also, advice for and against so i can weigh my options. Any help and/or advice would be greatly appreciated.

Oct 23, 2008 | 07:06 AM

big gear head

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Re: 3.73 gear help

Get a good installation kit with the gears. It will make installation much easier. I recommend DTS or Tom's Differentials for the kit. Theirs are the best. Don't get a Ratech or Richmond kit.