3-speed & Dana to 350 turbo & 205 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jhow66 · 08-22-2004, 11:40 PM

Got a 350 turbo & NP 205 located. Question-will this combo bolt up to my 72 Blazer crossmember and drive shafts that had the 3-speed -Dana combo? (out of a 1980 4X4 pickup.) Thanks in advance for any info.

1969 GMC · 08-22-2004, 11:44 PM

do you still have the 3 speed and dana 20? that would help alot, unless someone that has that setup posts up. but shooting in the dark, I am going to assume the th350 is longer than the 3 speed, so you will probably have to relocate your crossmember back a few inches. if that is the case, then driveshaft work will need to be done also.
if not, then just disregard everything i said

jhow66 · 08-23-2004, 12:20 AM

Don't have the new setup yet-still have the old setup. Wanted to see what problems I would run into. By the way, I notice that you seem to have a lot of knowledge on transfer cases by reading your posts. My son (orangeuavol) and I are building him a 72 Blazer 4X4. (our 1st 4X4) So feel free to gives us all the advice you can on the subject. LOL

Blazer1970 · 08-23-2004, 06:42 AM

I know that if you used a TH350/205 from an older truck ('69 - '74 or so), the driveshafts would work. The 1980 NP205 will have a slip yoke rear output, so you will need to come up with a new rear shaft. As for the crossmember, on the older 350/205 trying to use the Dana 20 crossmember will make the 205 hit the floor pan as the one for a 205 has about an inch more drop. I am not sure if the t-case adapter is the same on the 1980 version though. If it does hit, you should be able to space the crossmember down away from the frame a little if necessary.

orangeuavol · 08-24-2004, 10:19 PM

Have a shot at a TH400/NP205 combo, anyone know what years this combo came out in?

1969 GMC · 08-24-2004, 11:52 PM

It is from a K30, that is for sure. I believe that combo started in '80, but I could be wrong.

griesel72 · 08-25-2004, 09:20 AM

[QUOTE=jhow66] By the way, I notice that you seem to have a lot of knowledge on transfer cases by reading your posts.

That is correct, Adam has helped me out with his Tech knowledge about everything 4X4 related

jhow66 · 08-25-2004, 12:25 PM

Quote:

Originally Posted by 1969 GMC

It is from a K30, that is for sure. I believe that combo started in '80, but I could be wrong.

Sorry to bother you again but will we be able to use this in our 72 Blazer-crossmember?-sure that we will have to modify drive shafts?-any other catchs?

1969 GMC · 08-25-2004, 04:33 PM

I am not sure if the stock crossmember will work or not. The adapter might be too large, and you would have to drop it down with some spacers, but maybe someone else can chip in here.

us111 · 09-01-2004, 11:11 AM

know this isn't about truck's but glanced over reading post and realized you live where i grew up in the 70"s..! cool.

08-22-2004, 11:40 PM	#1
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	3-speed & Dana to 350 turbo & 205 Got a 350 turbo & NP 205 located. Question-will this combo bolt up to my 72 Blazer crossmember and drive shafts that had the 3-speed -Dana combo? (out of a 1980 4X4 pickup.) Thanks in advance for any info. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

08-22-2004, 11:44 PM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	do you still have the 3 speed and dana 20? that would help alot, unless someone that has that setup posts up. but shooting in the dark, I am going to assume the th350 is longer than the 3 speed, so you will probably have to relocate your crossmember back a few inches. if that is the case, then driveshaft work will need to be done also. if not, then just disregard everything i said __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

08-23-2004, 12:20 AM	#3
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Don't have the new setup yet-still have the old setup. Wanted to see what problems I would run into. By the way, I notice that you seem to have a lot of knowledge on transfer cases by reading your posts. My son (orangeuavol) and I are building him a 72 Blazer 4X4. (our 1st 4X4) So feel free to gives us all the advice you can on the subject. LOL __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

08-23-2004, 06:42 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	I know that if you used a TH350/205 from an older truck ('69 - '74 or so), the driveshafts would work. The 1980 NP205 will have a slip yoke rear output, so you will need to come up with a new rear shaft. As for the crossmember, on the older 350/205 trying to use the Dana 20 crossmember will make the 205 hit the floor pan as the one for a 205 has about an inch more drop. I am not sure if the t-case adapter is the same on the 1980 version though. If it does hit, you should be able to space the crossmember down away from the frame a little if necessary. __________________ Tim

08-24-2004, 10:19 PM	#5
orangeuavol GO VOLS! Join Date: May 2001 Location: Knoxville, TN Posts: 725	Have a shot at a TH400/NP205 combo, anyone know what years this combo came out in? __________________ http://1972blazer.shutterfly.com/<= blazer build pics It's called golf because all the other four letter words were taken. It's easier to ask for forgiveness than for permission.

08-24-2004, 11:52 PM	#6
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	It is from a K30, that is for sure. I believe that combo started in '80, but I could be wrong. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

08-25-2004, 09:20 AM	#7
griesel72 Senior Member Join Date: Apr 2003 Location: Howard, Kansas USA Posts: 1,997	[QUOTE=jhow66] By the way, I notice that you seem to have a lot of knowledge on transfer cases by reading your posts. That is correct, Adam has helped me out with his Tech knowledge about everything 4X4 related __________________ 1969 K10 Custom 10 1997 Z71 2006 Volkswagen Jetta TDI 2006 King Ranch 1980 Wife

08-25-2004, 04:33 PM	#9
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	I am not sure if the stock crossmember will work or not. The adapter might be too large, and you would have to drop it down with some spacers, but maybe someone else can chip in here. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

09-01-2004, 11:11 AM	#10
us111 Registered User Join Date: Jul 2004 Location: ashland oh Posts: 660	1969gmc know this isn't about truck's but glanced over reading post and realized you live where i grew up in the 70"s..! cool.



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