dana transfer case - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Illinois CST · 12-01-2003, 12:22 AM

Hey guys, I have a 70 blazer with a four spd manual and apparently a dana transfer case. Apparently, too much throttle snapped the output shaft. Does anyone have any info on these cases? Parts availability etc.. I don't know much about them. Would it be better to replace the shaft, or should I just look for a different transfer case? Thanks, Willie

1969 GMC · 12-01-2003, 02:42 AM

What engine do you have?
Transfer case is a Dana 20, and IIRC they are fairly common transfers, not in Blazers but more so in Jeeps and maybe Scouts. Good luck.

Illinois CST · 12-01-2003, 10:04 AM

I have got a 350. Thanks for the info. If anyone has this output shaft, or has any other suggestions, I'd appreciate the advice. Thanks, Willie

blazomatic · 12-01-2003, 10:49 PM

I have 2 Dana 20's. I used to have one in my Blazer. I replaced it with a 4-speed 205. So a Dana 20 will also bolt up to a 4-speed? Cause I thought they just came behind 3-speed manuals. Is the transmission to T-case adapter the same for all manuals? Sorry to butt in on your post.

Illinois CST · 12-01-2003, 10:52 PM

I also read that the dana's were only behind a 3 spd, but apparently they also were with the four spd with granny low. What did you have to change when you put in your 205, blazomatic?

blazomatic · 12-01-2003, 11:38 PM

Nothing. I lucked up and found a guy that had the whole set up for sale in the local paper. He rolled his '71. I got the trans, t-case, cross members, shifters and all. I took my 3-speed out and put in the four speed. I used my 3-speed cross member cause it was in better shape. My drive shafts worked. From what I've heard the Dana 20 was fairly common in 4x4 Blazers. Behind the 6 cyclinders and the 307 (like I have). Another member has the 3-speed and Dana 20 for sale $100 I think. I have one I would get rid of but I'm kinda far away. You could probably find one closer.

Illinois CST · 12-02-2003, 12:07 AM

Thanks for the info, blazomatic. I'm not sure what I'm going to do, I have been thinking about putting an auto in it sometime anyway, this might have forced my hand. I have a parts truck with a TH350 and NP203 so I might try to stick that in. It is good to know that a 205 might fit behind the 4spd without changing driveshafts though. Thanks again- Willie

*slicknsmooth72* · 12-02-2003, 05:07 PM

i have a dana i will part with out of jimmy with 350 moter for $100.00 + shipping pm me if interested

72 Blazerman · 12-02-2003, 10:23 PM

blazomatic, what are you asking for the Dana 20? I'm in northern va.

Doug

12-01-2003, 12:22 AM	#1
Illinois CST Registered User Join Date: Sep 2003 Location: Venedy, IL Posts: 25	dana transfer case Hey guys, I have a 70 blazer with a four spd manual and apparently a dana transfer case. Apparently, too much throttle snapped the output shaft. Does anyone have any info on these cases? Parts availability etc.. I don't know much about them. Would it be better to replace the shaft, or should I just look for a different transfer case? Thanks, Willie __________________ 1970 Blazer CST 350 700R4

12-01-2003, 02:42 AM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	What engine do you have? Transfer case is a Dana 20, and IIRC they are fairly common transfers, not in Blazers but more so in Jeeps and maybe Scouts. Good luck. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

12-01-2003, 10:04 AM	#3
Illinois CST Registered User Join Date: Sep 2003 Location: Venedy, IL Posts: 25	I have got a 350. Thanks for the info. If anyone has this output shaft, or has any other suggestions, I'd appreciate the advice. Thanks, Willie __________________ 1970 Blazer CST 350 700R4

12-01-2003, 10:49 PM	#4
blazomatic Registered User Join Date: Jun 2003 Location: s.e. tenn Posts: 28	Dana t-case I have 2 Dana 20's. I used to have one in my Blazer. I replaced it with a 4-speed 205. So a Dana 20 will also bolt up to a 4-speed? Cause I thought they just came behind 3-speed manuals. Is the transmission to T-case adapter the same for all manuals? Sorry to butt in on your post.

12-01-2003, 10:52 PM	#5
Illinois CST Registered User Join Date: Sep 2003 Location: Venedy, IL Posts: 25	I also read that the dana's were only behind a 3 spd, but apparently they also were with the four spd with granny low. What did you have to change when you put in your 205, blazomatic? __________________ 1970 Blazer CST 350 700R4

12-01-2003, 11:38 PM	#6
blazomatic Registered User Join Date: Jun 2003 Location: s.e. tenn Posts: 28	Nothing. I lucked up and found a guy that had the whole set up for sale in the local paper. He rolled his '71. I got the trans, t-case, cross members, shifters and all. I took my 3-speed out and put in the four speed. I used my 3-speed cross member cause it was in better shape. My drive shafts worked. From what I've heard the Dana 20 was fairly common in 4x4 Blazers. Behind the 6 cyclinders and the 307 (like I have). Another member has the 3-speed and Dana 20 for sale $100 I think. I have one I would get rid of but I'm kinda far away. You could probably find one closer.

12-02-2003, 12:07 AM	#7
Illinois CST Registered User Join Date: Sep 2003 Location: Venedy, IL Posts: 25	Thanks for the info, blazomatic. I'm not sure what I'm going to do, I have been thinking about putting an auto in it sometime anyway, this might have forced my hand. I have a parts truck with a TH350 and NP203 so I might try to stick that in. It is good to know that a 205 might fit behind the 4spd without changing driveshafts though. Thanks again- Willie __________________ 1970 Blazer CST 350 700R4

12-02-2003, 05:07 PM	#8
slicknsmooth72 Account Suspended Join Date: Oct 2003 Location: texas Posts: 199	i have a dana i will part with out of jimmy with 350 moter for $100.00 + shipping pm me if interested

12-02-2003, 10:23 PM	#9
72 Blazerman Chevelle Nutt Join Date: Nov 2002 Location: Fredericksburg, Va. Posts: 204	blazomatic, what are you asking for the Dana 20? I'm in northern va. Doug __________________ 71 CST Blazer 4X4, 350, on da tree 81 Blazer 2wd 350 350 99 F*** Ranger, I know, I know but it's cheap transportation 83 Mustang GT 5.0 4 speed loaded "got cubic inch?"



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