92 Z-28

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Mar 19, 2006 | 05:34 PM

Slow90RS

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Joined: Mar 2006

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Car: 1990 Camaro RS

Engine: 355

Transmission: 700-R4

Axle/Gears: stock peg leg

92 Z-28

I am about to buy a rearend out of a 92-z28...the guy says its posi but i was wondering what the gears are and if it really is posi

Mar 19, 2006 | 06:16 PM

klumb15

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From: Menominee MI

you would have to check the RPO code to see what ratio it is...sometimes they stamp it on the rearend or the gears itself...

you can do the posi trick, and rotate one tire forward and make sure the other one rotates forward with it...

Mar 19, 2006 | 08:15 PM

Kevin91Z

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Joined: Jul 1999

Posts: 10,950

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From: Orange, SoCal

Car: 1990 Pontiac Trans Am

Engine: 355 TPI siamesed runners

Transmission: Tremec T56

Axle/Gears: 12-Bolt 3.73

Yes, all 92 Z28's came with posi, but whether it still works or not is another issue. The ratio will be either 2.73 with a 305 automatic, 3.08 with a 5-speed and single cat, 3.23 with a 350 and automatic, or 3.42 with a 5-speed and dual cats.