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Sep 15, 2002 | 10:45 PM

DakotaSLT

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From: Virginia/Delaware

gears question

I have the 2.77 posi-rearend in my 88 Iroc, and I was told this was a BW unit

, weren't BW's 3.27's? Also I was told switching it to a 3.42 would be hard if not impossible. Can anyone help me out and shed some light here? Thanks.

-Cliff

Sep 15, 2002 | 11:48 PM

88 427 Camaro

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From: Mpls, MN USA

Car: 88 Camaro

Engine: 427 BBC

Transmission: T400

Common factory 9 bolt borg warner ratios were 2.77, 3.27 and 3.45. Uncommon ratios were 3.08, 3.70 & 3.73. Ratios that are offered at www.9bolt.com are 3.23, 3.45, 3.73 and 4.10.

Switching to a 3.45 ratio is easy. It requires a series 3 posi carrier, a 3.45 gear set and an installation kit. Package price is 785 +s&h. More information is available at www.9bolt.com

Miles

Sep 15, 2002 | 11:50 PM

DakotaSLT

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Joined: Apr 2002

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From: Virginia/Delaware

Quote:

Originally posted by 88 427 Camaro
Common factory 9 bolt borg warner ratios were 2.77, 3.27 and 3.45. Uncommon ratios were 3.08, 3.70 & 3.73. Ratios that are offered at www.9bolt.com are 3.23, 3.45, 3.73 and 4.10.

Switching to a 3.45 ratio is easy. It requires a series 3 posi carrier, a 3.45 gear set and an installation kit. Package price is 785 +s&h. More information is available at www.9bolt.com

Miles

Thanks for the info. Gonna have to wait on a gear swap though, 800 bucks is a little out of my price range