Help with Transfer Case - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Chevy Tech
GL4x4 Live! GL4x4 Casino

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Search
Reply
 
Thread Tools Search this Thread
Old December 18th, 2014, 09:30 AM   #1
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default Help with Transfer Case

Well I'm SAS my rig and I'm trying to figure out what year and Model Truck Transfer Case I need. I'm not all that familiar with transfer cases.

I know that I need a 231c Fixed Output, 27 spline Input, 5 bolt. What year and truck does this come out of? I called some junkyards and they said to come and look at it to see if it'll work. Well I'm not about to drive 2 hours just to look at a Transfer Case to have a 50 50 shot it'll work...
Cable810 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old December 18th, 2014, 09:49 AM   #2
jbsjunk
Little Member
 
jbsjunk's Avatar
 
Join Date: 03-01-08
Location: Saugatuck
Posts: 23,797
iTrader: (36)
Mentioned: 34 Post(s)
Default

S-10 4.3L is dandy. Have one in my XJ with a small block. A SYE kit will be the same if it says Jeep. 231 is the main part. It works fine. Been 2 years with zero problems.
jbsjunk is offline   Reply With Quote
Old December 18th, 2014, 09:49 AM   #3
Heepcreep77
Senior Member
 
Join Date: 02-16-14
Location: Mendon Ohio
Posts: 502
iTrader: (1)
Mentioned: 3 Post(s)
Default

I know my 91 s10 has the fixed front output and slip yoke rear
Heepcreep77 is offline   Reply With Quote
 
Old December 18th, 2014, 09:59 AM   #4
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default

Is it the 27 spline input?

Last edited by Cable810; December 18th, 2014 at 10:01 AM.
Cable810 is offline   Reply With Quote
Old December 18th, 2014, 10:00 AM   #5
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default

I know lots of people run the 231c with zero issues. That is not my concern.
Cable810 is offline   Reply With Quote
Old December 18th, 2014, 10:04 AM   #6
jbsjunk
Little Member
 
jbsjunk's Avatar
 
Join Date: 03-01-08
Location: Saugatuck
Posts: 23,797
iTrader: (36)
Mentioned: 34 Post(s)
Default

Quote:
Originally Posted by Cable810 View Post
Well I'm SAS my rig and I'm trying to figure out what year and Model Truck Transfer Case I need. I'm not all that familiar with transfer cases.

I know that I need a 231c Fixed Output, 27 spline Input, 5 bolt. What year and truck does this come out of? I called some junkyards and they said to come and look at it to see if it'll work. Well I'm not about to drive 2 hours just to look at a Transfer Case to have a 50 50 shot it'll work...
Quote:
Originally Posted by Cable810 View Post
Is it the 27 spline input?
Seems the most common. Mine is 27 spline.
jbsjunk is offline   Reply With Quote
Old December 18th, 2014, 10:46 AM   #7
BigBlockBlazer
Axle breakin' 101
 
BigBlockBlazer's Avatar
 
Join Date: 10-08-08
Location: Traverse City, Mi
Posts: 3,012
iTrader: (12)
Mentioned: 1 Post(s)
Default

From JB Conversions wedsite:

BACKGROUND:

"The model NP231 transfer case is a compact, chain-driven transfer case manufactured by New Venture Gear (New Process Gear) in Syracuse, New York. Since the early 80's, the model 231 has been used in many vehicles and is designated as follows: NP231C = GM S-10, S-15 trucks & Blazers 1983 - 1991, NP231D = Dodge midsize and fullsize trucks, NP231J = Jeep YJ's, TJ's, and some XJ's. This transfer case was first introduced in Jeep Wranglers in 1988 after replacing a 1-year run of NP207 transfer cases.

All "J" models of the NP231 are not created the same. There are internal differences among different year models and this kit has been designed to be compatible with each version. Our fixed yoke kit has been installed in hundreds of V8 equipped Wranglers (small block and big block) to date without a single shaft failure. Because of this success, the new output shaft carries a lifetime replacement warranty. "




Spline count is not mentioned but 27 is standard for auto's and manuals alike. I took my '91 231c off the back of an S10 manual and put it on a '85 700r4 K case without issues, just needed the appropriate adapter. And if you need a SYE JB conversions is the best one made.
BigBlockBlazer is offline   Reply With Quote
Old December 18th, 2014, 09:19 PM   #8
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default

Okay makes more sense now. Its just bolting up to a Chevy Trailblazer 4l60E
Cable810 is offline   Reply With Quote
Old December 18th, 2014, 09:29 PM   #9
Jayden1
Member
 
Jayden1's Avatar
 
Join Date: 09-11-14
Location: Michigan
Posts: 37
iTrader: (0)
Mentioned: 1 Post(s)
Default

Yeah, My 91 S15 Jimmy came with a 231. Like BigBlockBlazer said, they came on "GM S-10, S-15 trucks & Blazers 1983 - 1991." And 27 is common on all of them.
Jayden1 is offline   Reply With Quote
Old December 19th, 2014, 01:31 PM   #10
Heepcreep77
Senior Member
 
Join Date: 02-16-14
Location: Mendon Ohio
Posts: 502
iTrader: (1)
Mentioned: 3 Post(s)
Default

Ya mines 27 spline
Heepcreep77 is offline   Reply With Quote
Old December 19th, 2014, 09:27 PM   #11
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default

Now how common is a 5 bolt 221c. From what I understand there is a 6 and 5 bolt!?!
Cable810 is offline   Reply With Quote
Old December 19th, 2014, 10:03 PM   #12
Jayden1
Member
 
Jayden1's Avatar
 
Join Date: 09-11-14
Location: Michigan
Posts: 37
iTrader: (0)
Mentioned: 1 Post(s)
Default

The NP231C's from S10's and variants are 5 bolt, and Jeep NP231J's are 6 bolt.

So, the 5 bolt style would be as common as an S10, S15, or blazer of the correct years. You need 27 spline, 5 bolt. So just find an S10. S15, Blazer, Jimmy, Etc.

I think the NP231J's that bolted up to like the AX15 Or AX5 were lower spline count. Like 21 or 23. I could be wrong.

Last edited by Jayden1; December 19th, 2014 at 10:09 PM.
Jayden1 is offline   Reply With Quote
Old December 20th, 2014, 07:40 AM   #13
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default

Makes a lot of sense. The guy that's done a swap on the vehicle I'm about to do said I needed a 5 bolt not a 6. He didn't Say that the 6 bolt comes from jeep.... That's where I was getting lost. I was thinking that there were different types of 231x for the s10 etc
Cable810 is offline   Reply With Quote
Old December 20th, 2014, 10:22 AM   #14
BigBlockBlazer
Axle breakin' 101
 
BigBlockBlazer's Avatar
 
Join Date: 10-08-08
Location: Traverse City, Mi
Posts: 3,012
iTrader: (12)
Mentioned: 1 Post(s)
Default

The 231c has no vatiants, it was produced from '88-'91. Unlike the jeep 231 that had 6 or so diff models. The 231c was replaced in '92 by the 233c.

Last edited by BigBlockBlazer; December 22nd, 2014 at 07:25 AM.
BigBlockBlazer is offline   Reply With Quote
Old December 21st, 2014, 03:11 PM   #15
Cable810
Senior Member
 
Join Date: 01-19-12
Location: Rogers City Michigan
Posts: 166
iTrader: (1)
Mentioned: 0 Post(s)
Send a message via Skype™ to Cable810
Default

Okay this seriously helps me a ton!!! He said around a 93 or so. That means that it would be a 233c according to the things posted. NP231C = GM S-10, S-15 trucks & Blazers 1983 - 1991
Cable810 is offline   Reply With Quote
Old December 22nd, 2014, 07:22 AM   #16
BigBlockBlazer
Axle breakin' 101
 
BigBlockBlazer's Avatar
 
Join Date: 10-08-08
Location: Traverse City, Mi
Posts: 3,012
iTrader: (12)
Mentioned: 1 Post(s)
Default

It's easily verifiable by the tag on the tcase. And the 233c was electric shift where the 231c is lever shifted.
BigBlockBlazer is offline   Reply With Quote
Reply
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Chevy Tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Automatic 4x4 transmission and transfer case for 92 Chevy Mall Wheeler Parts for sale 1 December 9th, 2014 03:47 PM
01 GMC Yukon Transfer Case AJ Hall Chevy Tech 12 December 8th, 2014 11:05 PM
203 transfer case sandguy356 Parts for sale 0 November 4th, 2014 09:49 AM
BW1356 Transfer Case - Manual Shift - SOLD My91Ranger Completed Sales 24 September 1st, 2014 11:17 AM


All times are GMT -5. The time now is 06:19 PM.


Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
 
Page generated in 3.33699 seconds with 74 queries