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Discussion Starter · #1 ·
I know from previous posts that some Old's 12 bolts are really just 10 bolt gears in the 12 bolt housing? (Or something like that)

Is anyone able to tell by these photos if this is a real 12 bolt that would work in a 67 Chevelle? (It's from a 70 Cutlass)

 

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Looks exactly like mine and I have an Old's 3:90 posi. It's worked good for many years in my 66' (cross my fingers):D
 

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It will physically bolt in a 68 to 72 A body. It will be wider than your 67.
It is probably a 10 bolt. I would not use it. Stay with a Chevy rear end for your 67.
 

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Discussion Starter · #6 ·
It has 2.56 gears. Here is the craigslist add

If it's 10 bolt gears though, I will pass. I thought maybe someone would be able to tell something from the photos
 

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I know from previous posts that some Old's 12 bolts are really just 10 bolt gears in the 12 bolt housing? (Or something like that)
Just looking at the Richmond site to see if that's correct.
Seems that the P/N's for the "O" axle and the "8.5" axle are different.
http://www.richmondgear.com/01gm.html
Doesn't appear that there interchangeable.
Wally or Tom ,anything ?
 

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I'm fairly sure all the BOP 12 bolts have the smooth cover pictured above........unlike the chevy 12 bolt's V groove.




Not what you want.
 

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Does it have bolt-on axle bearing retainers like the Ford 9"??

Some GM rear's do and I always forget which??

pdq67
If it's a BOP rear, it's bolt in bearings instead of c-clips.
 
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