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Did a 91 Z L98 come with posi?

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Old

Jan 20, 2002 | 02:47 PM

#1

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Joined: Dec 2001

Posts: 32

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From: Fairfield, CA, U.S.

Did a 91 Z L98 come with posi?

I'm quite sure it did because that would be really stupid if it didn't with 345 ft/lbs of torque. How would you check for this and which gear ratio it has 2.73 or 3.23 if i recall correctly?

Old

Jan 20, 2002 | 04:09 PM

#2

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From: In a mint Third Gen!

Car: Red 87 IROC-Z28 T-Top

Engine: 5.7 Tuned Port Injection

Transmission: 700R4 Auto

Axle/Gears: BW 9-Bolt 3.27

Yes, it did.

Old

Jan 25, 2002 | 01:50 AM

#3

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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

As far as I know, all TPI cars have posi. Especially the later ones. And 1990-92 L98's have 3.23 10-bolt 28 spline rear ends with posi-traction, and dual cats.

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