could anyone tell me any info on this rear end? the last owner pulled the 12 bolt out of the car and installed a 10 bolt. It's in a 70 chevelle and the code on the pass side axle tube is CGA 0319B2 I was told there was a posi in it but when I turned the tire while holding the yoke the other tire turned the other way and i can hold one tire still and turn the other by hand so I don't think it's a posi or maybe a very wore out one, thanks Jim

CGA is a 2.56 non posi

http://chevelles.com/years/70/70rearcodes.html

Thanks I just found out the decoding link has a rear end site. cool! Jim