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04-18-2010, 09:16 AM
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#1 |
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Registered User
Join Date: Apr 2009
Location: Sand Springs Ok
Posts: 6
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looking for posi
I'm looking for a posi unit for my 72 c10. Can a unit from a latter model truck,73 on, work or does it need to be from a 67-72?
Oz |
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04-18-2010, 09:48 AM
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#2 |
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Registered User
Join Date: Jun 2008
Location: South Florida
Posts: 11,375
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Re: looking for posi
I just put an Auburn unit a few months ago...
Auburn part# 542032
__________________
Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild |
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04-18-2010, 10:06 AM
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#3 |
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My Carbon Footprint
Join Date: Oct 2008
Location: Orygun
Posts: 5,527
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Re: looking for posi
I'm not answering your specific question because I don't know rear ends that well but craigslist is a great place to look if you are not going new. Picked mine up for $125 and it works perfect.
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04-18-2010, 10:39 AM
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#4 | |
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Registered User
Join Date: Nov 2008
Location: Italy
Posts: 1,278
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Re: looking for posi
Quote:
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'68 C-10 SWB 383 Stroker (Sold 3/2/2013) '87 R2500 LWB 454 TBI converted to Carb 
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04-18-2010, 10:51 AM
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#5 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
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Re: looking for posi
12 bolt truck will work from later years. BUT....most of the 73 and up are Gov-Lok (aka Gov-Bomb) and not Eaton style like the 67-72. What do you plan on doing with the truck? I would just buy a new Eaton posi or somebody elses (Yukon?) clutch style rebuildable posi. If you get a 67-72 OEM posi, most likely it will need clutches which run about $100 for the complete set so you have to add that to the cost. But if you can get a complete rear for the right price with the posi, go for it!
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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04-18-2010, 10:55 AM
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#6 | |
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Registered User
Join Date: Jun 2008
Location: South Florida
Posts: 11,375
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Re: looking for posi
Quote:
We spent around an hour and a half. Then one of my techs had to shim it for me as he has done hundreds of posi units.
__________________
Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild |
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04-18-2010, 12:17 PM
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#7 |
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Registered User
 
Join Date: Aug 2001
Location: SOMERSET KY.
Posts: 6,425
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Re: looking for posi
I have a 12 bolt 373 posi in a 72 1/2 ton. P.m. Me if you are interested in driving to ky. John
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junkyardjohn 69 1 TON TOW TRUCK // 84 4WD CUCV BLAZER// 85 1 TON 4WD STAKE TRUCK// 86 M1031 5/4 TON 4WD CUCV// ALOT OF OLD TRUCKS FOR ONE OLD MAN TO DRIVE.  THERES ROOM FOR ALL OF GODS CREATURES RIGHT NEXT TO MY MASHED POTATOES//LIFE MEMBER OF P.E.T.A (PEOPLE EATING TASTY ANIMALS) DON'T RENT U-HAUL ALWAYS TELL THE TRUTH IT WILL AMAZE PART OF THE PEOPLE & ASTONISH THE REST |
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04-18-2010, 01:41 PM
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#8 |
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Registered User
Join Date: Sep 2005
Location: Canton North carolina
Posts: 3,080
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Re: looking for posi
I have had both stock Gm, and a Auburn. The Auburn is a tough quality piece and worth the money. The Stock posi in my 4x4 had broken clutches when I pulled it apart to rebuild and the stock posi in my bb truck was not in much better shape, but after rebuilding them both they seem to be ok. I dont believe the stock clutches are available from Gm anymore so you would have to buy from Randy's Ring and pinion or Richmond.
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67 blue step side- bb 68 gold and white swb cst anniversary 68 custom swb hot rod Ls swap 69 swb cst 6 cylinder/ overdrive 69 black/black cst bb swb 70 orange and white cst Canada built truck swb bb 71 black and white super swb bb 71 red and white super swb 72 green and white super swb 4x4 62 nova wagon 400 series Ls swapped 68 Camaro 327/4 speed- 1 owner, original paint 66 Volkswagen bettle 69 auto stick Volkswagen Beetle |
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04-18-2010, 01:43 PM
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#9 |
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Registered User
Join Date: Apr 2010
Location: Mobile, AL
Posts: 365
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Re: looking for posi
I bought a brand new eaton posi from rearendparts.com. They had it listed at like $4__, I talked them down to $385. Got quoted to install it and 3.73 gears (i have all bearings and seals) for $250.
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04-18-2010, 02:43 PM
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#10 |
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Registered User
Join Date: May 2009
Location: Calgary, Alberta
Posts: 115
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Re: looking for posi
The prices on 4wheelparts.com seem to be reasonable too. Auburn units for $388.
http://www.4wheelparts.com/Drivetrai...=237&t_pt=5589
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69 Chev C/10 350/200 4R LWB 69 Chev K/20 4x4 350/4sp LWB 69 GMC Sierra Grande 396/400 LWB |
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04-18-2010, 02:46 PM
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#11 |
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The Engine Whisperer
Join Date: Sep 2006
Location: Ohio
Posts: 770
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Re: looking for posi
Get an eaton if your going to even start to make any power or just want a reliable posi unit. I've seen alot of auburns go boom!
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04-18-2010, 02:46 PM
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#12 |
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Registered User
Join Date: Apr 2010
Location: Mobile, AL
Posts: 365
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Re: looking for posi
From what I've been told is the Auburn units are not rebuild-able but the Eaton units are. That's just what I've heard though.
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