4-speed w/203?? - Off-Road Forums & Discussion Groups
GM Standard IFS Trucks & SUV's All discussion of full sized IFS Trucks, SUV's to include Suburban

Reply
 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 10-01-2000, 06:59 PM
**DONOTDELETE**
Guest
 
Posts: n/a
4-speed w/203??

I've been trying to keep my eye out for a 203 transfer case that's mated to a standard tranny. Does anyone (I'm sure someone does) know what trucks in particular I should be looking for?? What years, K20, K30??
Thanks,

Trucks don't talk back.
Sponsored Links
Advertisement
 
post #2 of (permalink) Old 10-01-2000, 07:03 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

I am not sure what years, but ColoradoK5.com has a list of that sorta stuff, like what axles, t-cases, trannys, engines where offered what year and model... I thought the SM465 manual tranny came with a 205 mated to it? That is what I have.. though the lazy side in me wouldn't mind a TH400

post #3 of (permalink) Old 10-01-2000, 07:07 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

I have a couple SM465's with 205's. Wouldn't have anything else!! They are tougher than hell. I recently put one in my 86 that came out of a 76 and had never been touched. It still had origional fluid!! I changed the juice, and havn't had a single problem!! My reson for the 203 is The Doubler. It allows the range seciton of the 203 to fit between the tranny and the xfer to give low and high gear before the xfer case. This means 2x low!! But, using a standard, I need one that will fit between the standard and the 205.
I'll check out Colorado K5 though. Thanks,

Trucks don't talk back.
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 10-01-2000, 07:16 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

Some magazine just did an article ( i think it was 4 wheel and off-road ) they took the shift rail out of an NP205 and modified it and used a Dana 30 twin shifter stick to be able to change it between 2 and 4 wheel drive and hi and lo....
but they only did a one page article, and i ain't about to tear apart one of my NP205's and not be entirely sure about it, they need to make a short book about it....

<center>
<IMG SRC="http://orangetruck.tripod.com/rebelflag.gif">
post #5 of (permalink) Old 10-01-2000, 07:26 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

It was 4wheel & Off Road. It was a GREAT article, except it was done on a FxxD!?! And it was too short. I happen to have an old automatic 205 that I can "tinker" with to try to cut the rail and see how it works in my transfer and still be able to put back my origional if it doesn't work out. A while ago they went through the procedure for setting up the Doubler too. That's when I got hooked on the idea. I keep thinking "Granny gear, lo range, lo range, 4.10's". It's a powerful thought.

Trucks don't talk back.
post #6 of (permalink) Old 10-01-2000, 07:34 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

yeah, they made a good point in that article, the NP205 is considered one of the best transfer cases around, so why aren't there aftermarket parts available for them? The 203 isn't a bad t-case and i don't really need my NP205 that I have, because a 203 would do fine for what i do with my truck...

[center]
post #7 of (permalink) Old 10-01-2000, 09:47 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

I think the only year 203's came behind the 465's was in 74, I got my 203 out of a k20 sub and made my Doubler with it

post #8 of (permalink) Old 10-02-2000, 05:57 AM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

Do you like the doubler?? How's it work out for you?? Do you still think it's worth the time and $$.
Thanks,

Trucks don't talk back.
post #9 of (permalink) Old 10-02-2000, 03:53 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

I read a article a few years back in "FOURWHEELER" magazine, that said GM only put the NP203 behind a 4 speed 1 year, because the 4 speed destroyed transfer cases (203). Don't know if i'd want to do this or not. ???

[img]/wwwthreads_images/icons/cool.gif[/img] '87 Chevy 1/2t SWB in the making!
post #10 of (permalink) Old 10-02-2000, 05:13 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: 4-speed w/203??

The weak link in the 203 is the differential (4x4) section. The front half (range section(hi/lo)) is all gear driven and has never been a problem from what I can find. It's always the chain part in the back that gives up. I've also been trying to ask around and see what kind of luck others have had with it.

Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome