[rememberfireball#22]

According to the PHS for my 68 GTO it was built with a 3:55 and positraction. Over the years a previous owner got rid of the posi unit. It will smoke the right rear until you let off the gas. Can I install a posi unit in my 10 bolt housing? Does the ring and pinion have to come out? Does the complete housing need to be removed? I am a decent backyard mechanic, but this may be a little out of my skill range. How difficult is it. Will the ring and pinion need to be set up again with the correct clearance and pattern? I may be ahead trying to find a used complete rear with the correct gear and posi. I would have no problem changing the housing.

[rsavage]

I bought a 8.2 Eaton type posi carrier for my 70 from a board member Jim - J D Race and Restoration in Richfield Ohio 330-six 59-7 one one 7. I can't remember his board name.He was about $200 cheaper that other suppliers and it was at my house in 2 days. My carrier had 7/16 bolts so he had to drill it - no charge. You also have to buy an install kit ( about $130). I took my whole housing to a local guy who knew what he was doing for install and set up. He charged me a couple hundred dollars. Didn't want to screw it up and ruin the original 3:55 gears. I believe Ol'Pinion Head also sells carriers and sets up rear gears. You could pm him too.

[ponchjoe]

Are you sure the post unit is gone or maybe just worn out? Either way, I consider myself a decent mechanic but don't have the tools to install and set up a rear end. If you are going to do it or have it done, you will want to replace all of the bearings and seals and it requires a new set up. If your gears are good you can reuse them.

[92GTA]

I plan on buying the Auburn 5420114 from Paul Knippen's Muscle Motors, he is here on the forum. He can beat Summit's price:

https://www.summitracing.com/parts/aub-5420114

[rememberfireball#22]

What do you guys think my chances of finding a complete housing assy with posi ? My 68 Goat is a numbers matching 400 H.O. with four speed, console, and the 3:55 rear that does not have a posi unit in it. I don't know where to find the numbers on the rear housing, but I have a idea that sometime in the last 48 years the rear housing has been replaced with a open rear. I'll tell you this, if I could find a burnout contest somewhere I'm sure I could win it with this pegleg rear.

[indymanjoe]

I found out from JD race the rear in my 72 Lemans is out of a 68 GTO. go figure..I definitely recommend JD race, he is on here, goes by Monzas? or similar name..