The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-11-2010, 07:17 PM   #1
88fordf150
Registered User
 
88fordf150's Avatar
 
Join Date: Nov 2009
Location: Michigan
Posts: 474
Posi Unit

Who has the best deal on a new or used 12bolt posi unit? Can't find any deals on ebay for a 3:73 or higher.
__________________
Brad handshoe
88fordf150 is offline   Reply With Quote
Old 09-12-2010, 10:32 AM   #2
DANTIP
Registered User
 
DANTIP's Avatar
 
Join Date: Sep 2001
Location: Fort Wayne, Indiana, USA
Posts: 1,888
Re: Posi Unit

I see them on craigslist occasionally. You will want an 8.875" TRUCK unit with the gear set. A 4-series posi carrier fits 3.73 - 4.56? The carrier and gears can be shipped without buying the entire rear. Good Luck!
DANTIP is offline   Reply With Quote
Old 09-12-2010, 02:03 PM   #3
usmcchevy
Has more rust than truck...
 
usmcchevy's Avatar
 
Join Date: Apr 2005
Location: Ivanhoe, MN
Posts: 2,421
Re: Posi Unit

Or you can get a 3 series carrier for 3.08 gears and buy aftermarket gears that are made for the 3 series carrier. They came in 3.73 4.11 and 4.56. This is what I'm doing, unless I can trade my 3 series posi for a 4 series.
__________________
1972 Custom/10 SWB, 4.8/4l80e
Build thread

LSx Swap FAQ index
usmcchevy is offline   Reply With Quote
Old 09-12-2010, 02:40 PM   #4
DANTIP
Registered User
 
DANTIP's Avatar
 
Join Date: Sep 2001
Location: Fort Wayne, Indiana, USA
Posts: 1,888
Re: Posi Unit

I do know that you can buy 3-series 3.73 gears but do not know about anything steeper. I happen to be running 3-series 3.73 gears on my 3-series open carrier.
DANTIP is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:17 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com