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02-14-2006, 11:58 AM
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#1 |
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Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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dana 20 vs. np205
looking at a possible transmission upgrade, and I wanted to see if the dana 20 and np205 have any dimensional or spline count differences that would mean that switching to a 4 spd from a 3 spd would mean I have to swap my current transfer case out. (looking to go from a 3 spd saginaw to a 4 spd saginaw)
Also, if it appears I have to swap my dana 20 for an NP205, will I have driveshaft length issues? What is the input spline count for these two transfer cases?
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's  1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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02-14-2006, 12:36 PM
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#2 |
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Post Whore
 
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,689
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Re: dana 20 vs. np205
I do know that your transfer case crossmember will need to be dropped down about 1 inch to give the NP205 clearance. If you don't it will hit the bottom of the floor. Can't speak to the rest of your questions.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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02-14-2006, 01:41 PM
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#3 |
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Registered User
Join Date: Dec 2004
Location: NW, WA.
Posts: 1,421
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Re: dana 20 vs. np205
205 Spline input counts for:
th350 = 27 SM465 = 10 Th400 = 32 |
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02-14-2006, 05:08 PM
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#4 |
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Aluminum slot wheels rule...
Join Date: Jan 2006
Location: Maine
Posts: 6,211
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Re: dana 20 vs. np205
I think you'd be happier with a granny-gear 4-speed rather than a Saginaw. SM-420, SM-465 and NP-435 are common in old Chevys. I dont think they make transfer case adapters for a Sagina, anyway.
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02-14-2006, 07:02 PM
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#5 |
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Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Re: dana 20 vs. np205
the D20 uses a 10 spline input and a crappy sleeve, just like the 465/205.
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1969 GMC K2500  1996 Honda Accord 2007 Kawasaki KLR 650 |
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