Question on transfer cases... - Off-Road Forums & Discussion Groups
GM Standard IFS Trucks & SUV's All discussion of full sized IFS Trucks, SUV's to include Suburban

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 08-08-2000, 04:04 PM
Posts: n/a
Question on transfer cases...

Of all the parts I have both on my trucks and in the garage (or various other storage areas around home), I don't have a single NP205. I have at least 4 NP203's and a 208.

I know that an NP203 is a full time case (that can be converted to part time). However, what happens if you remove the full time locks on the front axle and install lock-outs like Warn? I have done this on my 79/83 plow truck with a 203 and all seems to work well. My 84 3/4 ton that I am working on already had Warn lock-outs on it when I bought it from the previous owner and it has an NP203 case. Doesn't this essentially give you part time 4x4? What (if any) damage can result from using lock-out hubs with a full time transfer case and how hard / expensive is it to convert an NP203 to part time?

Thanks again all! Always trying to learn more...

Sponsored Links
post #2 of (permalink) Old 08-08-2000, 04:32 PM
Posts: n/a
Re: Question on transfer cases...

You just have to drive it in the lock (HL and LL) positions all the time. If you try to drive in the full time positions, no go. Also, the front driveshaft will turn all the time, but it does in full-time mode anyway.

'70 CST Blazer, 350, SM465, NP205.
'87 Suburban 4X4, 350, 700R4
'88 Chevy PU, 4X4, 350, 700R4
post #3 of (permalink) Old 08-09-2000, 07:13 AM
Posts: n/a
Re: Question on transfer cases...

The 203 transfer case acts like a differential in a rear end. HiLoc and LoLoc act like a locker, of sort. In Hi or Lo if you unlock the front hubs, that end of the diff will turn, causing your rig to stay where it is.

Sponsored Links
post #4 of (permalink) Old 08-09-2000, 11:56 AM
Posts: n/a
Re: Question on transfer cases...

So, how expensive is a part-time conversion kit?

Is it difficult to install?

post #5 of (permalink) Old 08-09-2000, 04:01 PM
Join Date: Sep 1999
Posts: 6,517
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Question on transfer cases...

This link: goes to an article written on the ORC Chevy page and talks all about the NP203 and the mile marker brand part time conversion...

ORC Land Use columnist
My July article on ORC
The_Sandman_454 is offline  
Sponsored Links

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


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