I believe BP is a 2:73 open rear. 5-19G is May 19th and the G is Detroit Gear. Im going to guess its from a 68 or 69 Camaro or Nova. They made a BP that was a 3:08 for 67 Camaro also. You should be able to see the cast ing date on it so that will tell you which year it is.
You've got something wrong in the numbers. BP is a 10 BOLT rear end. Post a clear high resolution picture of the stamp and the date code on the pumpkin and we should be able to figure it out for you.
Edit: After looking in my manuals, I DID find a 12 bolt BP code used on the 1965 Nova, 3.07 ratio, non-posi. If it really is a 65 Nova 12 bolt, tell me where you live and I'll come take it off your hands! And you won't even have to pay me anything to haul it away!!!
You've got something wrong in the numbers. BP is a 10 BOLT rear end. Post a clear high resolution picture of the stamp and the date code on the pumpkin and we should be able to figure it out for you.
Edit: After looking in my manuals, I DID find a 12 bolt BP code used on the 1965 Nova, 3.07 ratio, non-posi. If it really is a 65 Nova 12 bolt, tell me where you live and I'll come take it off your hands! And you won't even have to pay me anything to haul it away!!!
I think this came out of a 66-67 Nova as it measures 57.75” (or close to that). Hey I’m planning on building this rear end with a limited slip or positive differential and 3.42 gears anyways. It still counts 12 bolts.
I think this came out of a 66-67 Nova as it measures 57.75” (or close to that) flange to flange. Hey I’m planning on building this rear end with a limited slip or positive differential and 3.42 gears anyways. It still counts 12 bolts.
57-3/4" flange to flange or outside drum to drum would be correct for early Nova.
OP recheck the stamping. It may be BR not BP. BP would be very rare for a 12 bolt.
Edit: I should have said axle face to axle face. Not flange to flange.
68 or 69 Camaro or Nova (they used the same code), but again, BP for those two years is a 10 bolt, not a 12. Are you POSITIVE about the code? Post a picture and maybe we can tell more.
I’m positive that is the axle stamp, I also got a casting number 3852980N. The problem is I can’t post anything, I just need to get these pictures to someone. I don’t know how to use flicker
3852980 is the center section for a 65-70 full size car (and a 65 through early 1967 Nova) 12 bolt, but again, BP is a 10 bolt code. Either you have a Frankenstein where the axle tube(s) have been grafted from one car to another, or someone made a mistake when they stamped the axle.
You can send the pictures to me. My email address is in my signature below.
Thanks for the information, I knew it was off an earlier Nova and it was an open differential with a 3.07. As far as using it on my car, no, I’d rather it go on the correct car. I’ve thought about building my 10 bolt since it’s already on the car, what do you think?
I guess I’ll get it cleaned up, build a crate and put it up for sale. Thanks for your help, Sonny
You will have no trouble selling that differential. You might even be able to trade it for a correct first gen. Camaro 12 Bolt. I agree with Ed, Don't cut it up.
No need for a crate. I shipped rear ends all over the country and even some out of the country on a pallet. Run it across the corners and wrap cardboard around the ends of the axles to protect them. Use blocks of wood bolted to the pallet and run lag bolts through the spring perch bolt holes into the blocks of wood. Put a block of wood under the pinion and run strap metal around it to hold it in place.
A most interesting thread. Hope the axle goes to someone who needs it.
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