I have read in two different articles that, all A-body 10 and 12 bolt rears 64-72 are interchangeable. I am looking to put a 70 12 bolt in a 67 car. It is frame off, and i have the 12 bolt bolted in using the 67 upper control arms. I believe i need to have the drive shaft shortened. Has anyone done this swap and is there anything else i need to know? Are the 70-72 shocks going to be too short, and am i going to have any problem with pinion angle? Any other problems? I appreciate any help i can get with this. I have a perfect 12 bolt all set up for another project that has changed now and really don't want to spend the money on redoing the 67 rear. Thanx, Dennis ..........Nibornej@cox.net
The 70 will fit. It will be 1" wider than the 65-7 rears. They will all interchange so you have no pinion angle problems. When going from a 10 bolt BOP rear to a Chevy 12 bolt rear, you will need the NEAPCO 3-3130 rear u-joint.
