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09-16-2002, 08:24 PM
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#1 |
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Registered User
Join Date: Mar 2002
Location: Jasper, AL USA
Posts: 19
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Dana 20 Transfer Case
I was going to change the front pinion seal out in my transfer case the other day and I ran into a problem. I got a 3-speed trans w/ and transfer case out of a 1969 K5. I thought the transfer case was a Dana 20, and that is what I have been told. But when I got to the parts store to get the seal, they only showed one for a Spicer 18 and the Rockwell. I saw the Federal Mogul book myself, so the guy just didn't miss it. Can somebody please help me out. Thanks in advance!!!
Chad Borden 
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1971 K5 Blazer 307 3sp/205(project) |
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09-17-2002, 07:35 AM
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#2 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,507
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Federal Mogul book is wrong, plain and simple. Spicer 18 is similar to the Dana (Spicer) model 20, except the 18 has an offset rear output. You may have to get the number off the seal that is in there. Good chance that it is the same seal as a model 18.
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Tim |
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09-26-2002, 01:13 AM
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#3 |
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KEEP IT PINNED
Join Date: Feb 2001
Location: Hanford ,CA
Posts: 111
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Ive never heard much about the rockwells.
Anybody know anything about them?
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RYAN KING 71 swb 4x4 |
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09-26-2002, 03:49 AM
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#4 |
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I need another Barley Pop
Join Date: Feb 2001
Location: Grants Pass, OR
Posts: 1,629
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Ryan, I have a Rockwell in my truck. The number one thing I like most about it is that the output for the rear driveshaft is at the very bottom of the transfer case. That helps from having too much driveshaft angle with my 8" lift. Other than that, I don't know much about them. Mine works great!
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67 Short Fleet 4x4 04 Honda CRF450R 89 Toyota 4-Runner 34 Ford 2 door sedan - Long term project ---------------------------------------------- There is a very fine line between "hobby" and "mental illness" 
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09-26-2002, 10:31 AM
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#5 |
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Post Whore
 
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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I've got one in my 69 and parts are kinda hard to find and expensive. I'm pulling mine shortly when I put in a 4 speed and 454 so I have purchased seals for it. Couldn't find a gasket kit so I will just make them and/or use silicone. They are plenty strong but just not very desirable because of lack of parts and knowledge about them.
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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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09-26-2002, 02:03 PM
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#6 |
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KEEP IT PINNED
Join Date: Feb 2001
Location: Hanford ,CA
Posts: 111
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Oh ok. Ive never seen one before that i know of.
Thats interesting about the output being lower. That should be nice. At least they seem to be a strong unit and dont need to many part to be replaced. Seems like and old transfer case is plenty strong. Do some have a pto? Is it the same rockwell company that makes the 2.5 ton axles?
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RYAN KING 71 swb 4x4 |
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09-26-2002, 02:11 PM
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#7 |
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Registered User
Join Date: Jul 2002
Location: St. James, MO
Posts: 1,238
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Yes, there is provision for a PTO, and, yes, it is the same Rockwell. In fact, they were used on some Mil-Vehs.
Someone posted a link to a T-case specialty place a couple weeks ago that stocks Rockwell parts and seals. I don't have it saved here at work.
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'69 Longstep K-10: 327/SM465/T-221/Closed Knuckle Dana44/12-bolt. |
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10-13-2002, 10:03 PM
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#8 |
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Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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4x4 parts for your transfer cases
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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