10 bolt to 14 bolt rear-end conversion in 96 1/2 ton chevy 4X4??? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-09-2004, 03:21 PM
tommytempest's Avatar
Member
 
Last photo:
Join Date: Apr 2003
Location: Omaha NE
Age: 49
Posts: 122
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Question 10 bolt to 14 bolt rear-end conversion in 96 1/2 ton chevy 4X4???

OK
So my stock 10 bolt rear in my 96 K1500 is really LOUD!!! I picked up a rear out of a parts truck a guy bought that had the same RPO code of GT-4 on the glove box as mine. The code means 3.73 ratio, but apparently not the type of rear, since the new one is a 14 bolt and the old one is a 10 bolt. There is like 3 feet of snow on the ground here, so I want to do a little research before I try throwing this thing in. I need to find out
A: Will my brake drums fit since the new rear has none.
B: Will my driveshaft work without being shortened/lengthened.
C: Will the spring perches have to be moved/modified?
Please reply if you have the answer to any or all of my questions.
Thanks Guys!
Tom

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-09-2004, 05:32 PM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
most won't have an answer to this question, you're going to have to measure it. As far as the brakes are concerned, why not use the brakes from the 14 bolt?

K
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-09-2004, 05:35 PM
Member
 
Last photo:
Join Date: Nov 2002
Location: BC Canada
Posts: 243
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
There are 2 chevie 14 bolts. One is full float and one is not. That is the first thing you need to find out. Spring perches should be the same.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-09-2004, 06:33 PM
M&M CUSTOM's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Transmission identification
Last journal entry: 1988 Suburban, the project continues.
Last photo:
Join Date: Mar 2003
Location: Northwest Pennsylvania.
Age: 43
Posts: 2,231
Wiki Edits: 9

Thanks: 0
Thanked 1 Time in 1 Post
Re: 10 bolt to 14 bolt rear-end conversion in 96 1/2 ton chevy 4X4???

Quote:
Originally posted by tommytempest
OK
So my stock 10 bolt rear in my 96 K1500 is really LOUD!!! I picked up a rear out of a parts truck a guy bought that had the same RPO code of GT-4 on the glove box as mine. The code means 3.73 ratio, but apparently not the type of rear, since the new one is a 14 bolt and the old one is a 10 bolt. There is like 3 feet of snow on the ground here, so I want to do a little research before I try throwing this thing in. I need to find out
A: Will my brake drums fit since the new rear has none.
B: Will my driveshaft work without being shortened/lengthened.
C: Will the spring perches have to be moved/modified?
Please reply if you have the answer to any or all of my questions.
Thanks Guys!
Tom
Your 10-bolt is a 8.5 inch ring gear with 30 spline axleshafts.

[color=red]Answers to your questions:


A: No they wont the 14 bolt rears are 8 lug, unless they've been changed.
B: Lengthwise you would have to measure accurately to make sure, the shaft may have to be shortened, and the universal joint in your truck is smaller than what the 14-bolt requires but an adapter universal will take care of that.
C: you will have to measure the spring perches to make sure, depending on which 14-bolt it is (there were at least 5 different full floaters, and 2 semi floaters) it all depended on what they were in.
MOST will interchange, but not all.
If you are looking at a dual rear wheel axle, there were 3 different ones. It all depended on what they were originally installed in.
Do you have any of the information on the 14-bolt, so I can look it up?
What vehicle it was in, or what the stamping numbers on the axle tube are.[/color]
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-10-2004, 08:34 AM
tommytempest's Avatar
Member
 
Last photo:
Join Date: Apr 2003
Location: Omaha NE
Age: 49
Posts: 122
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Little more info

I think KillerFormula has it right. I wont know till I get everything thawed out and crawl under the truck with a tape measure. I didn't get the drums with the rear because the guy needed them for a truck he was building. It is not a full floater it is 6 Bolt lugs. Apparently they put 14 bolts in half tons too guys! My truck is a 96 K1500 (4x4). The rear end is also out of a 96 K1500. Thought I might run into someone on this board that had done this before in a truck like mine. Aparently these 10 bolts are prone to failure on these chevies if you actually use them as a truck. Seems like there would be others for that reason, that had made this swap. Anyway, thanks for the posts.
Tom
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-10-2004, 11:56 AM
killerformula's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Carburetor
Last journal entry: Clean up
Last photo:
Join Date: Oct 2003
Location: Northeast
Age: 34
Posts: 3,485
Wiki Edits: 3

Thanks: 13
Thanked 27 Times in 18 Posts
btw... and not to be a jerk or anything, but you do know that you have to get the same axle ratio in your new axle as you have in your front axle right? Just making sure!

K
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 02-10-2004, 04:27 PM
tommytempest's Avatar
Member
 
Last photo:
Join Date: Apr 2003
Location: Omaha NE
Age: 49
Posts: 122
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yea. Both 3.73's At least thats what the RPO code on the glove box says. I would have a hard time believing that the guy changed out both the front and rear gears on a beat up old stock 96 chevy. but you never know?
Thanks
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 02-11-2004, 07:00 AM
M&M CUSTOM's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Transmission identification
Last journal entry: 1988 Suburban, the project continues.
Last photo:
Join Date: Mar 2003
Location: Northwest Pennsylvania.
Age: 43
Posts: 2,231
Wiki Edits: 9

Thanks: 0
Thanked 1 Time in 1 Post
It looks like this cover. And it is also considered the "light duty" 3/4-ton axle.

This axle should be a direct bolt in as far as the springs go, the rest would have to be measured to be sure.



The rest of the info about this axle can be found here.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 02-11-2004, 04:03 PM
tommytempest's Avatar
Member
 
Last photo:
Join Date: Apr 2003
Location: Omaha NE
Age: 49
Posts: 122
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thats the one alright! Light 3/4 ton. I think the brakes drums are the only thing I am going to have to find. Apparently the 10 bolts take 10" drums and the 14's take 11"inch drums. Anyone got a pair of those laying around? I'll bet they will be tough to find used, since most half tons have the 10 bolt, and most 14 bolts are probably set up for 8 bolt lugs.
Thanks for the info!
Tom
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 02-12-2004, 07:49 AM
M&M CUSTOM's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Transmission identification
Last journal entry: 1988 Suburban, the project continues.
Last photo:
Join Date: Mar 2003
Location: Northwest Pennsylvania.
Age: 43
Posts: 2,231
Wiki Edits: 9

Thanks: 0
Thanked 1 Time in 1 Post
NEW price on the PartsAmerica website is only $47.88 each.

They list a few different drums for the 10.5 inch axle, but only ONE size drum for the 9.5 inch like you have.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 02-12-2004, 02:13 PM
tommytempest's Avatar
Member
 
Last photo:
Join Date: Apr 2003
Location: Omaha NE
Age: 49
Posts: 122
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Hmmm.... Napa O'reilly and Advance, show 2 drums for the half ton. A 10 inch and an 11 inch. Advance used wearever and had a part number of YH140543 (might have been WH140543) which are $71 each and the number you gave me a link to was YH140449. I asked Advance what the part number to the 10" drum was and they said YH140541. Is it possible the one you linked me to was for the 8 bolt lug setup? I sure like the price better that you sent me, but not sure they are the right ones?
Thanks for your help
Tom
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 02-12-2004, 06:50 PM
M&M CUSTOM's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Transmission identification
Last journal entry: 1988 Suburban, the project continues.
Last photo:
Join Date: Mar 2003
Location: Northwest Pennsylvania.
Age: 43
Posts: 2,231
Wiki Edits: 9

Thanks: 0
Thanked 1 Time in 1 Post
The only difference it showed me was for the depth from the axle flange to the backing plate, and none showed the lug pattern that I remember seeing.

All of the auto parts places price their parts according to the market, I will check this out a little further tomorrow.

If I can find a better price for the same part I will send a link to where you can find it.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 05-08-2007, 09:04 PM
Fenderbender
 
Join Date: May 2007
Location: West Va.
Age: 46
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I am just starting to do the same job. I just purchased a 14 bolt 6 lug from a 1995 k2500 light duty RPO # GT4. The only thing I see that may give trouble is the U-JOINT @ the diff. and the length of the drive shaft. The diff came out of a reg cab long bed & is going into a extra cab short bed.
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 05-08-2007, 09:10 PM
Crosley's Avatar
Hotrodders.com Moderator
 
Last wiki edit: T-350 rebuild tech
Last journal entry: Bar under the dash
Last photo:
Join Date: Nov 2002
Location: ... USA
Posts: 8,082
Wiki Edits: 1659

Thanks: 328
Thanked 99 Times in 95 Posts
Quote:
Originally Posted by fenderbender
I am just starting to do the same job. I just purchased a 14 bolt 6 lug from a 1995 k2500 light duty RPO # GT4. The only thing I see that may give trouble is the U-JOINT @ the diff. and the length of the drive shaft. The diff came out of a reg cab long bed & is going into a extra cab short bed.

I will point out you have responded to a 3 yr old thread.... there may or may not be any more response
__________________
Some people are like Slinkies... Not really good for anything, but they still bring a smile to your face when you push them down a flight of stairs.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 05-09-2007, 08:19 PM
Fenderbender
 
Join Date: May 2007
Location: West Va.
Age: 46
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You don't say. Well I stumbled across this thread. And you gave some input. So maybe someone else has taken on a project like this that may have something to share. Thanks
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 02:44 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.