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Drivetrain => Differentials, Axles & Brakes => Topic started by: Jim on December 17, 2023, 08:54:45 AM

Title: 10 bolt posi
Post by: Jim on December 17, 2023, 08:54:45 AM

Hi, I can get a chevelle 10 bolt posi rearend for my 65 skylark  what are the difference 's from the buick ?.Jim

Title: Re: 10 bolt posi
Post by: WkillGS on December 18, 2023, 10:54:23 AM

Lots of internal differences. It will bolt into the car tho. I think they use different u-joints, there are adapter u-joints avail.
The Chev uses c-clips to retain the axles, the Buick uses retainer plates at the brake backing plates. You won't be able to swap gears, center sections, and axles between Buick and Chev (at least not without mods).


This is a good resource. Jim posts on the V8 site regularly.
http://www.jdrace.com/ (http://www.jdrace.com/)

Title: Re: 10 bolt posi
Post by: jmos4 on December 18, 2023, 02:36:17 PM

Hi,

Also depending upon year the Chevrolet axle came from could be a inch wider believe 67 up could be wrong also 67 up had different spring mounts compared to 64-66.

Regards,
Jim

Title: Re: 10 bolt posi
Post by: Jim on December 18, 2023, 05:41:23 PM

Hi ,didn't remember  when they got wider66 or 67  this is supposedly a 66 so it should drop in with a universal  joint change  .just a 300 mile trip to get it. I don't know the gear  ratio either I'll have to think some more. Jim

Title: Re: 10 bolt posi
Post by: WkillGS on December 19, 2023, 08:00:26 AM

I know the Chevelle 12 bolt was still the narrow version, unsure about the 10 bolt.
Buick went to the wider 10 bolt in '66.

Title: Re: 10 bolt posi
Post by: 35chevcoupe on December 19, 2023, 06:46:54 PM

I know when I got my 65 GS hd top it had a 66 chevelle 12 post in it and it fit perfect . I would think a 10 bolt 66 chevelle would be the same .