Author Topic: Need Help with my 8.2 10 bolt rearend  (Read 3715 times)

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Offline ravenart13

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Need Help with my 8.2 10 bolt rearend
« on: July 23, 2010, 02:29:23 PM »
I have several rearend rebuild issue questions. First off, I have a 1965 Buick Skylark, 2 Door Hardtop with an 8.2 10 bolt rear with 2:79 gears. My ring and pinion are broken (snapped into from the previous owner doing burnouts). 1) Does anyone know where I can find replacement parts for a 8.2 10 bolt with 2:79 gears (not that I want to go back there again. I'd like to put 3:73 gears personally). 2) When I replace it, do I have to find a new carrier and use a remanufactured install kit, and 3) If there are no replacement parts, can I swap out to a 12 bolt posi rear and if so, what would it take to do that (I noticed my rear has the coil spring suspension versus leaf springs). Any help in this matter would be greatly appreciated!

Offline Brian

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Re: Need Help with my 8.2 10 bolt rearend
« Reply #1 on: July 23, 2010, 04:40:41 PM »
You can purchase 3.55 and 3.90 aftermarket gears for the 8.2 (buick actually used a pontiac rear end from 64-67)
  The lower gears will require a different carrier, and the only option there is to find a used 3 series carrier, or buy one of the aftermarket Auburn posi carriers for it. 
  Where are you located?  I have a set of 2.78 gears on the shelf in my garage, and have several complete 2.78 rear ends stored in my shed in VA. 
'64 Skylark 2dr ht 4 speed, 300-4
'65 GS ht, 4 speed,2-4s,AC,PS,PB,PW,Pseat,Tilt
'66 Skylark 2dr ht 300-2 automatic
'78 Yamaha DT 400 2 stroke
'88 Ford F-150 4x4 (used to be 4x2)
'89 Ford F-350 4x4
'03 Honda Accord Coupe V6 6-speed manual (daily driver)

Offline Loren At 65GS

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Re: Need Help with my 8.2 10 bolt rearend
« Reply #2 on: July 23, 2010, 06:47:29 PM »
I have a 12 bolt under one of my '65s. It came out of a '67 El Camino and was a straight bolt in. No mods necessary.
Loren
65 GS htp BCA Senior
 65 Skylark coupe/2x4BBnailhead
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Offline WkillGS

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Re: Need Help with my 8.2 10 bolt rearend
« Reply #3 on: July 24, 2010, 10:46:57 AM »
There are 3 different carriers used:
2.56 and 2.79
2.93, 3.08, and 3.23
then 3.36 and up
 
Auburn offers a new posi for the 2.93 to 3.23 ratio,
Eaton offers a a new posi for the 3.36-up ratio

I'd highly recommend contacting Jim Monzaz at www.jdrace.com
Jim posts on several Buick boards, knows the Buick rears well, and will sell you the CORRECT parts at a great price.
His website is very informative as well.

A replacement rear would be the easiest solution. 64-66 Buick, Olds Cutlass, or Pontiac Lemans will bolt right in. The 67 rears use different rear springs (Easy fix), and 68-up are approx an inch wider. 12 bolt Chev rears are nice, but in demand(and expensive)
Walt K
Eastern Pa

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66 GS Silver Mist/black 401 4 spd
66 GS Flame Red/black 401 5 spd
66 GS Saddle Mist/black 401 L76 auto
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65 GS vert Verde Green/ Saddle buckets 401 4 spd
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Offline ravenart13

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Re: Need Help with my 8.2 10 bolt rearend
« Reply #4 on: July 24, 2010, 12:13:25 PM »
Thanks to all who responded. This should definitely get me going in the right direction. BTW Brian I live in south Georgia (Valdosta area) near the GA-FL state line.