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04-08-2014, 02:42 PM
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#1 |
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Registered User
 
Join Date: Sep 2010
Location: KS
Posts: 348
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1967 Posi Unit
Can a posi unit from a 1967 six lug rear end be swapped with a non-posi 1971 5 lug rear? I picked up a 1967 SWB the other day that has a factory 3.73 posi and was wondering if I could use it in my 1971 project?
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Jay 1956 Chevy 210 Sedan 1970 Camaro Z-28/RS 1970 Chevelle SS 396 (numbers matching L34 car) 1971 Chevy SWB Fleetside with 1967 front clip - in progress My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=438156 |
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04-08-2014, 05:12 PM
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#2 |
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I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1967 Posi Unit
If you are talking about just the Posi carrier and gears, then yes it can. If you are talking about swapping the complete rearend, then sort of. The '67 housing will bolt inplace of the '71 housing, but the axles and overall length of hte '67 is shorter. The '65-'69 6 lug and part of '70 model year 6 lug rearends are shorter by aboutr 1.5" overall than the late '70 6 lug and the '71 up 5 lug rearends.
You can swap out the carriers, just like you would to do a gear change or rebuild of the center section. The carrier is the same from '65 to about '81 or so when GM stopped using the 12 bolt in the 1/2 ton trucks.
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Karl  1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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04-08-2014, 06:51 PM
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#3 |
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Registered User
Join Date: Sep 2010
Location: KS
Posts: 348
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Re: 1967 Posi Unit
Yes, I was talking about just swapping out the carrier and gears. Thanks for the information.
__________________
Jay 1956 Chevy 210 Sedan 1970 Camaro Z-28/RS 1970 Chevelle SS 396 (numbers matching L34 car) 1971 Chevy SWB Fleetside with 1967 front clip - in progress My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=438156 |
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04-11-2014, 01:23 PM
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#4 |
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Registered User
Join Date: Sep 2010
Location: KS
Posts: 348
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Re: 1967 Posi Unit
Does anyone make 5 lug rear axles to swap into a 1967 6 lug rear end? Seems like it would be less work to use the 1967 rear end with posi that I have and just put new 5 lug axles in it. I am running disc brakes on the rear so I wouldn't need to worry about backing plates.
__________________
Jay 1956 Chevy 210 Sedan 1970 Camaro Z-28/RS 1970 Chevelle SS 396 (numbers matching L34 car) 1971 Chevy SWB Fleetside with 1967 front clip - in progress My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=438156 |
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04-11-2014, 02:50 PM
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#5 |
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1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,540
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Re: 1967 Posi Unit
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684  support our troops! |
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04-14-2014, 11:29 AM
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#6 |
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I'm just glad to be here!
Join Date: Jan 2008
Location: Longview, TX
Posts: 4,788
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Re: 1967 Posi Unit
Travis at Pro Performance can get a better price then that for the exact same part. He is a vendor on this forum. he has a Moser thread going....
__________________
Karl 1965 Chevy Stepside(Grandpa's Old Blue) and (July 2015 Shop Build!)(2020, the Saga Continues) http://67-72chevytrucks.com/vboard/s...d.php?t=372424 The LST Challenge: http://67-72chevytrucks.com/vboard/s...=1#post7812257 Korbin's 1st Square: "Sunburn" http://67-72chevytrucks.com/vboard/s...d.php?t=418618 1985 GMC Sierra: "White Trash", Korbin's 2nd now... http://67-72chevytrucks.com/vboard/s...d.php?t=632305 Henry - 1984 Chevrolet, Owen's 1st Square |
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