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veefer69
Tribal Scout

USA
12 Posts

Posted - 02 Jul 2019 :  4:44:09 PM  Show Profile  Reply with Quote
Hi all, i have a 67 Ventura that i would love to switch the rear to posi and some better gearing. Has anyone ever just switched out the pumpkin with a kit? Forgive me if this question is a stupid one, i am not that knowledgeable about the rear ends. It is a 10bolt rear however i can confirm that.
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Shawn E

Edited by - veefer69 on 02 Jul 2019 5:25:40 PM

Corncob2061
Crazy Horse

USA
574 Posts

Posted - 09 Jul 2019 :  01:24:17 AM  Show Profile  Reply with Quote
The new posi carrier has to match the gear set. If your car has an 8.2 10 bolt, there are 3 different carriers, 2.56-2.73, 2.76-3.23, and 3.23 and up IRC. The 3.23 and up are 4 pin units on the spider gears. The two pins are weaker. They interchange though, you just have to make sure your gears fit the right carrier. The 8.2 do not have a pumpkin, the carrier and gears all come out the back after you pull the axles and back cover off on this. It should be a 8.2 in a Pontiac or from a Buick. Olds ran 12 bolts that same era in many cars, Chevy did to. Chevy had the strongest 12 bolt, then the Olds 12 bolt, 8.2 were std though across gm. It was replaced by the 8.5 in the 70s.

A pumpkin style does not have a back cover, (a couple do, most do not), the punkin which holds the gears and carrier are pulled out the front of the housing ( 8.75 gm, ford 9 and mopar 8.75 have pumpkins. Jay

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