jQuery not supported.



1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear end

1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear end

Postby g8s2hell [OP] » Nov 03 2012, 2:02am

Hi I blew my rear end its a 6 lug 9.5 14 bolt prob 373 can i use the 4wd version i know the brake system is prob different because
the axle shaft are 33 1/4 long 33 spline so the question is can i use the diff with my axle shaft they are 31.5 33 spline the only issue i can see
happening is having to change brake backing plates ? anybody ever done this ? im guessing the axle tubes are the same length and diff housing same so it should work
Original Poster
g8s2hell
Newbie
Newbie
Posts: 2
Topics: 1
Joined: Nov 03 2012, 1:48am
Years of membership: 8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
Year: 1991
Make/Model: GMC Sierra
Extra Info: 2500 5.7
Group Membership:
Registered users

Re: 1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear

Postby camfire87 » Nov 03 2012, 5:40am

if you've got the whole differential then I would just swap the whole thing in as one piece. I don't know for sure that the axles are any different size, but I really can't foresee you having any issues swapping them in.
Image

2" levelling kit
Stampede flares
Eagle Alloy rims with 275/70/18 General Grabber AT's
User avatar
camfire87
Combustion on 4 pistons [L2]
Combustion on 4 pistons [L2]
Posts: 455
Topics: 14
Images: 44
Joined: Jan 29 2012, 12:27am
Years of membership: 9 years of membership9 years of membership9 years of membership9 years of membership9 years of membership9 years of membership9 years of membership9 years of membership9 years of membership
Location: Calgary, AB
Year: 2012
Make/Model: Chevrolet Silverado
Extra Info: 1500 Z71 5.3l 4x4
Group Membership:
Registered users

Re: 1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear

Postby kemo » Nov 03 2012, 5:43am

out of curiosity, what is the RPO for the differential that you pulled it from? like you said, it is 2wd, so it is not like you have to swap the gearing on a front differential as if it were 4wd.
kemo
Combustion on 2 pistons [L2]
Combustion on 2 pistons [L2]
Posts: 236
Topics: 3
Joined: Sep 21 2012, 4:29am
Years of membership: 8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
Location: USA
Year: 2012
Make/Model: Chevrolet Silverado
Extra Info: 1500
Group Membership:
Registered users

Re: 1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear

Postby Baker » Nov 03 2012, 3:33pm

You can change it out.

I picked up 2 6 lug 14 bolt 9.5 axles. One was 4:10 and the other was 3:73

I combined the 2 of them. Gears out of the 3:73 but the carrier out of the 4:10 (I counted all the teeth a hundred times and made sure they are the same). In the end I had the 2wd axle housing and and the gears out of the 4wd under my K1500
Image

Cable Splicers Have Bigger Conductors!
Baker
Combustion on 7 pistons [L2]
Combustion on 7 pistons [L2]
Posts: 789
Topics: 8
Images: 8
Joined: Jul 12 2012, 1:17am
Years of membership: 8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
Location: Ontario Canada
Year: 2019
Make/Model: GMC Sierra
Extra Info: HD 2500 Duramax
Group Membership:
Registered users

Re: 1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear

Postby g8s2hell [OP] » Nov 07 2012, 5:17pm

Hi guys thanks for your input haven't been on in a bit was to busy working on my truck and its done :) I'm rolling again so I thought id share my experience" first thing I did called the local salvage yards I was getting prices of 400 up to 700 ouch so then I called a place here named kenny u pull nice place get to pull your own parts they wanted 90 bucks sweet I found a 93 2500 with a tight rear the spring centre wherethe same the only difference between mine and it was backplate to backplate messurement it was 4 inches longer so my wheels are 2 inches out .....it was a pretty easy process I did run into other problems turns out I had a broken main leaf drivers side and the passenger side one also snapped when I added a leaf so now I have new brakes 2 new main springs the diff I got was used but it had been rebuilt it is posi I had open diff ......
Original Poster
g8s2hell
Newbie
Newbie
Posts: 2
Topics: 1
Joined: Nov 03 2012, 1:48am
Years of membership: 8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership8 years of membership
Year: 1991
Make/Model: GMC Sierra
Extra Info: 2500 5.7
Group Membership:
Registered users

Re: 1991 gmc 2500 2wd 5.7 blew rear end can i use a 4x4 rear

Postby [email protected] » Dec 27 2016, 10:33pm

Yes you can , just make sure it's a posi or limited slip , not a locker they are for below 20 miles an hour , just verify it went into a similar truck 2 wd and choose your gearing , a 3:42 or 3:73 are usually sporty or go 3:08 for highway milage .
Goodluck
[email protected]
Firing on 1 cylinder [L1]
Firing on 1 cylinder [L1]
Posts: 11
Topics: 4
Joined: Sep 16 2016, 5:42pm
Years of membership: 4 years of membership4 years of membership4 years of membership4 years of membership
Location: Ontario
Year: 2007
Make/Model: Chevrolet Silverado
Extra Info: 4.8 classic lt
Group Membership:
Registered users

Return to Transmission/Drivetrain

 

  • Similar topics
    Replies
    Views
    Last post

Common search terms

rear same blew getting nice mine miles first thanks truck work front make

It is currently Apr 12 2021, 1:28am

  • Sponsor
Login  •  Register
Transmission/Drivetrain Forum
Transmission/DrivetrainTransmission and drivetrain related components. Discuss automatic and manual trans repairs and performance or talk about driveshafts or rear-ends and differentials. Diagnostics of 4-speed, 5-speed, or even 6-speed transmissions.
To create a new topic in Transmission/Drivetrain, click this button:
Previous topic Next topic
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: Google Adsense [Bot], Google Search Appliance and 41 guests