rear end
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
1) Counting the bolts on the rear cover will tell you the general type.
2) Remove said bolts & cover, there will be #'s stamped on the pinion and ring gears telling you the ratio. Presence or absence of springs in the carrier will tell you open or posi.
This is the sure-fire method. There is also a 3-character code stamped on the top of the passenger side axle tube that can be decoded to tell you at least what it was at one time.
2) Remove said bolts & cover, there will be #'s stamped on the pinion and ring gears telling you the ratio. Presence or absence of springs in the carrier will tell you open or posi.
This is the sure-fire method. There is also a 3-character code stamped on the top of the passenger side axle tube that can be decoded to tell you at least what it was at one time.
Thread Starter
Joined: Jan 2001
Posts: 948
Likes: 0
From: Fresno, CA
Car: 87 Z28
Engine: LT1
Transmission: T-56
its not the stock rear.. its a 10 bolt.. its got 3.73's in it, its an open... i just dont know what year it came from... so im not sure if it has 26 or 28 spline axles...
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