What T-Case is this ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wildwood · 08-31-2004, 01:34 PM

Sorry my info is a little skimpy but here goes. I was at the local junkyard when we stumbled across a Blazer. I think it was an early 80's we took the front axle shafts for my spares for my friend. This truck had full time hubs. I noticed the T-case which I assumed would be a 208 looked like it was a 205. I looked at the shifter which had a pattern I've never seen before: from dash, LO LOCK, LO, N, HI, HI LOCK. Is this a 205 with 2 Wheel LO? It was mated to what looked to me like a turbo 350 auto tranny. But then I don't know much about auto trannies. Also, Would this T-Case fit my '70 GMC with 4 speed?

Grim Reaper · 08-31-2004, 04:01 PM

That's the Shift pattern for a NP203. Front axle should have drive slugs instead of lockouts unless it was converted to part time. 79 was the last year GM ran that case. If that truck had that case it was a swap in or the truck is older then you thought.

charlieo · 08-31-2004, 05:34 PM

sounds like a 203 to me too. I just picked one up a week ago . I don't like the idea of a 203 (chain drive) but I'm going to keep it & make a doubler out of it !

wildwood · 08-31-2004, 06:30 PM

I thought '79 had a D44 front end. This truck definately had a 10 bolt. Very possibly things could have been swapped around on this truck. Is there a number on the T-case that would verify it's type? I'm thinking maybe it is a 205 (looks just like mine) but has a different shifter stick.

1969 GMC · 08-31-2004, 07:48 PM

its possible that the stick was changed, but im guessing its a 203. they looked sort of similar to a 205 from the rear. if it is a 205, it should have a small cover in the middle of the back with 3 bolts holding it on, no more than a silver dollar sized. no np205's came from the factory with a 2 Lo, but can be modified that way. also, the late 70's were a mixmatch of dana 44's and 10 bolts, i guess it depended on what the parts department had leftover.

EDIT: here is a pic of a NP205:

stan79chevy · 08-31-2004, 11:27 PM

when i got my 205 it didnt have the knob so i put the one off the 203 onto it..i think they are universal. you cant really tell by the know you gotta get under there. they have a tag up by the front output its blue and silver unless it fell off already

stan

lovemychevy · 09-01-2004, 10:53 AM

have the same thing in our 76 sierra grande itll climb anything i mean anything. we have it for a ranch truck and it has front and rear lockers in it pretty ballsy little truck

08-31-2004, 01:34 PM	#1
wildwood Registered User Join Date: Jun 2003 Location: Calgary AB Posts: 110	What T-Case is this ? Sorry my info is a little skimpy but here goes. I was at the local junkyard when we stumbled across a Blazer. I think it was an early 80's we took the front axle shafts for my spares for my friend. This truck had full time hubs. I noticed the T-case which I assumed would be a 208 looked like it was a 205. I looked at the shifter which had a pattern I've never seen before: from dash, LO LOCK, LO, N, HI, HI LOCK. Is this a 205 with 2 Wheel LO? It was mated to what looked to me like a turbo 350 auto tranny. But then I don't know much about auto trannies. Also, Would this T-Case fit my '70 GMC with 4 speed? __________________ You can't get out if ya don't get in

08-31-2004, 04:01 PM	#2
Grim Reaper Registered User Join Date: Jul 2001 Location: Atlanta GA Posts: 1,704	That's the Shift pattern for a NP203. Front axle should have drive slugs instead of lockouts unless it was converted to part time. 79 was the last year GM ran that case. If that truck had that case it was a swap in or the truck is older then you thought. __________________ Grim-Reaper 70 Pontiac LeMans Sport Convertible, worlds longest resto in progress Looking for 71-72 2wd Blazer or Jimmy Project

08-31-2004, 05:34 PM	#3
charlieo Registered User Join Date: Feb 2003 Location: sw Posts: 341	T-case sounds like a 203 to me too. I just picked one up a week ago . I don't like the idea of a 203 (chain drive) but I'm going to keep it & make a doubler out of it !

08-31-2004, 06:30 PM	#4
wildwood Registered User Join Date: Jun 2003 Location: Calgary AB Posts: 110	I thought '79 had a D44 front end. This truck definately had a 10 bolt. Very possibly things could have been swapped around on this truck. Is there a number on the T-case that would verify it's type? I'm thinking maybe it is a 205 (looks just like mine) but has a different shifter stick. __________________ You can't get out if ya don't get in

08-31-2004, 07:48 PM	#5
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	its possible that the stick was changed, but im guessing its a 203. they looked sort of similar to a 205 from the rear. if it is a 205, it should have a small cover in the middle of the back with 3 bolts holding it on, no more than a silver dollar sized. no np205's came from the factory with a 2 Lo, but can be modified that way. also, the late 70's were a mixmatch of dana 44's and 10 bolts, i guess it depended on what the parts department had leftover. EDIT: here is a pic of a NP205: __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650 Last edited by 1969 GMC; 08-31-2004 at 07:50 PM.

08-31-2004, 11:27 PM	#6
stan79chevy Registered User Join Date: Sep 2003 Location: COVINGTON GEORGIA Posts: 477	could be a 203 shifter knob on a 205 or 8 when i got my 205 it didnt have the knob so i put the one off the 203 onto it..i think they are universal. you cant really tell by the know you gotta get under there. they have a tag up by the front output its blue and silver unless it fell off already stan __________________ 79 chevy k20 350/350/205/D44/14bFF 4.56 gears rock LWB pimer black 01 S-10 ZR2 extended cab 4.3/4L60E/233 3.73 gear 31" DICK CEPEK CRUSHERS

09-01-2004, 10:53 AM	#7
lovemychevy Registered User Join Date: Jul 2004 Posts: 88	have the same thing in our 76 sierra grande itll climb anything i mean anything. we have it for a ranch truck and it has front and rear lockers in it pretty ballsy little truck



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