Re: 1970 Camaro Rear..
 

I'll check the casting date...good idea.

wilma

Re: 1970 Camaro Rear..
 

Chevrolet By The Numbers shows (COW) under 70 Camaros as a 3.55 and (COX) as a posi 3.55. So, I'm sure this rear was used in both the Camaro and Firebird line. Looks like starting in 71 they went with 2 digit codes.

Re: 1970 Camaro Rear..
 

[quote=marxjunk]
on Pontiacs..71 and 72 A-bodys got 12 bolts automatically weather D-port or round.../quote]

i was trying to say 455s got the 12 bolt automatically

Re: 1970 Camaro Rear..
 

Got some more info on the 12 bolt...

casting number is 3969341NF

casting date is C 8 0....March 8, 1970

wilma https://www.yenko.net/ubbthreads/pics..._152937440.jpg

Re: 1970 Camaro Rear..
 

Tom, check and see if any of your 70 Novas have the same cast number.

Re: 1970 Camaro Rear..
 

My 70 Nova L78 cars both have the same casting number as the one I listed. The center section is the same for Nova and the Camaro...difference is in the width of the complete housing...Nova is one inch shorter. 55 1/4 vs. 55 1/4...spring perch locations are also a little wider on the Camaro...and the axles are longer.

wilma

Re: 1970 Camaro Rear..
 

Thanks Tom!! My L34 has the same cast number also. I was curious if they did share the same center section.