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Please help me id this rear end

3287 Views 10 Replies 6 Participants Last post by  big gear head
6
First, the car is a 72 El Camino. It was originally a SS 350 4spd if that matters. When I purchased it a few years ago, I was told it had a Pontiac 12 bolt 3.42 gear in it. That's about as much as I know aside from the following pictures.

It appears to have a C-Clip eliminator kit installed. Possibly bigger axles.
To keep you from having to count I believe they are 31 spline. 1.2326" diameter.

Years ago I bought a disk brake kit and I'm trying to install it. I believe the C-Clip eliminator kit is messing me up. That's another story, I'm just trying to confirm the ID of the rear end and modifications so I can figure out the next step in the rebuild.

I'm not sure if there are other numbers or information you need. Please let me know.
Thanks
Dan











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BOP 12 BOLT. Has a 12 bolt pattern cover and 10 bolt ring gear.
i think these are 30-spline axles,
the BOP style 12-bolts and 10-bolt cover axles did not have C-clips from the factory...:noway:
to add the disc brake kit/bracket you will need something to work with the BOP style axle ends...
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