Need advice on a posi unit for a C body
#1
Need advice on a posi unit for a C body
Looking to have a unit built for a 73' C body. Since these posi rears are more rare than Bigfoot sightings we are looking to have one built. What's the general opinion 9" or 12 bolt? The bolt pattern on the wheel hub would have to be 5X5 to match the fronts and the wheels. I'm thinking 9" parts would be more easily obtained in the future if needed and not sure if I could get 5X5 axles for a 12 bolt. Brakes will be converted to disk. Also, wondering what other challenges we might not anticipate other than the portioning valve.
Side note: I see Deadeye has hit the 1000 mark, so I went back and looked at my number. I've hit the 911. To the general population this may be much of a mile stone but for a first responder it stands out.
Side note: I see Deadeye has hit the 1000 mark, so I went back and looked at my number. I've hit the 911. To the general population this may be much of a mile stone but for a first responder it stands out.
Last edited by zeeke; March 25th, 2019 at 01:06 PM.
#2
Which rear end do you have in your car now? Would this one from a 1975 Riviera fit? This guy is located in Brooklyn.
https://www.ebay.com/itm/12-BOLT-GM-...QAAOSwFSNb81-p
https://www.ebay.com/itm/12-BOLT-GM-...QAAOSwFSNb81-p
#4
Which rear end do you have in your car now? Would this one from a 1975 Riviera fit? This guy is located in Brooklyn.
https://www.ebay.com/itm/12-BOLT-GM-...QAAOSwFSNb81-p
https://www.ebay.com/itm/12-BOLT-GM-...QAAOSwFSNb81-p
#5
Here's a good thread with info on the 9.3 and 9 3/8 full-sized rear.
https://classicoldsmobile.com/forums...erchanges.html
Our member; Monzaz, is the go to guy for info on these hard to find parts. I've often wondered what I will do with my 71 98 if I ever get to the point of restoring/replacing the rear end?
https://classicoldsmobile.com/forums...erchanges.html
Our member; Monzaz, is the go to guy for info on these hard to find parts. I've often wondered what I will do with my 71 98 if I ever get to the point of restoring/replacing the rear end?
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April 24th, 2011 06:12 PM