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1969 GMC · 02-13-2003, 03:49 AM

Hello,

I am new to this post, and also to the world of GM trucks.
I recently purchased this all-original 1969 GMC 3/4 ton 4x4 with a 350 and a 4 speed, and plan to use it for a daily driver.

Here's my question: I seem to have found conflicting sources as to what drivetrain my truck is equipped with. It still has the original 350 (82,000 miles), but what axles, transfer case, and transmission does it have? Thanks in advance!

oh yeah, here's a pic of it!

1969 GMC · 02-13-2003, 03:55 AM

hmm i can't seem to attach the picture, i'll try one more time

Blazer1970 · 02-13-2003, 09:41 AM

'69 is kind of a crossover year for some stuff. Your truck should have an SM465 trans. Transfer case is probably an NP205 but could also be a Rockwell T221. The Rockwell case has the rear output a few inches lower than the input, while on a 205 it is directly in line. You can find pictures on this board to verify which it is. The rear axle could be either a Dana 60 or an Eaton, you can also search the board for pictures to verify which. Front axle is definitely a Dana 44.

**breeh** · 02-13-2003, 11:38 AM

In addition to the good info that Blazer1970 gave, you could also have either closed or open knuckle axles in 69.

**Yukon Jack** · 02-13-2003, 11:53 AM

I agree with what is said above and I want to see some pics - e-mail them to me if you can't get them posted and I will post them for you. If you hit the Profile button below, you will see the option on e-mailing.

Growdon · 02-15-2003, 02:18 AM

Welcome from California

I am fairly recent to the board too, and I am working on a recently acquired 71 3/4 to 4x4. The info. above just about covers it. If you could post pictures of your drivetrain people could give you a positive I.D. on your parts.

1969 GMC · 02-16-2003, 10:02 PM

Hello everyone and thanks for the helpful tips. I just drove the truck about 800 miles from Minnesota to Ohio. It runs and drives excellently. It suffers from a few electrical problems, but otherwise is great. Oh, and it has a dana 60 rear, np205 t-case, and closed-knuckle dana 44 front. I will have some pics soon, i will email to those who can post since it appears i can't. Thanks.

1969 GMC · 02-17-2003, 02:08 PM

thanks Yukon Jack, for your pictures of your Rockwell T-221 case in another thread. I have positively ID'ed my t-case as a T-221, not a 205 like I previously believed.

Also, could someone help me out on the specs of the 221? If there is a place here on the website, could you point it out? Thanks very much.

02-13-2003, 03:49 AM	#1
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	My new truck Hello, I am new to this post, and also to the world of GM trucks. I recently purchased this all-original 1969 GMC 3/4 ton 4x4 with a 350 and a 4 speed, and plan to use it for a daily driver. Here's my question: I seem to have found conflicting sources as to what drivetrain my truck is equipped with. It still has the original 350 (82,000 miles), but what axles, transfer case, and transmission does it have? Thanks in advance! oh yeah, here's a pic of it! __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

02-13-2003, 03:55 AM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	hmm i can't seem to attach the picture, i'll try one more time __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

02-13-2003, 09:41 AM	#3
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	'69 is kind of a crossover year for some stuff. Your truck should have an SM465 trans. Transfer case is probably an NP205 but could also be a Rockwell T221. The Rockwell case has the rear output a few inches lower than the input, while on a 205 it is directly in line. You can find pictures on this board to verify which it is. The rear axle could be either a Dana 60 or an Eaton, you can also search the board for pictures to verify which. Front axle is definitely a Dana 44. __________________ Tim

02-13-2003, 11:38 AM	#4
breeh Recovering 67-72 Addict Join Date: Oct 2000 Location: North Bend, WA Posts: 1,788	In addition to the good info that Blazer1970 gave, you could also have either closed or open knuckle axles in 69. __________________ 68 Short Fleet 4x4; 427; BTO Level 3 700R4; NP205; Dana 60 front and rear; 4" lift with 35's; Disc brakes; AGR variable ratio steering; factory bucket seats; factory tach and tilt. "Friends call me cruzer cuz I like fast cars and fast women"

02-13-2003, 11:53 AM	#5
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	I agree with what is said above and I want to see some pics - e-mail them to me if you can't get them posted and I will post them for you. If you hit the Profile button below, you will see the option on e-mailing. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

02-15-2003, 02:18 AM	#6
Growdon Registered User Join Date: Dec 2002 Location: Northern California Posts: 53	Welcome from California I am fairly recent to the board too, and I am working on a recently acquired 71 3/4 to 4x4. The info. above just about covers it. If you could post pictures of your drivetrain people could give you a positive I.D. on your parts. __________________ 72 K5 CST 350/350. 4 wheel disks, 4" lift soft top. ###Sold 71 GMC Custom K2500, 3/4 ton 4x4. 350/350 ## Just bought, New Project

02-16-2003, 10:02 PM	#7
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Hello everyone and thanks for the helpful tips. I just drove the truck about 800 miles from Minnesota to Ohio. It runs and drives excellently. It suffers from a few electrical problems, but otherwise is great. Oh, and it has a dana 60 rear, np205 t-case, and closed-knuckle dana 44 front. I will have some pics soon, i will email to those who can post since it appears i can't. Thanks. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

02-17-2003, 02:08 PM	#8
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	thanks Yukon Jack, for your pictures of your Rockwell T-221 case in another thread. I have positively ID'ed my t-case as a T-221, not a 205 like I previously believed. Also, could someone help me out on the specs of the 221? If there is a place here on the website, could you point it out? Thanks very much. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650 Last edited by 1969 GMC; 02-17-2003 at 02:11 PM.



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