Scout dana 20 vs jeep dana 20 (internal gears) - JeepForum.com

 
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post #1 of 4 Old 05-14-2004, 02:38 PM Thread Starter
pityocamptes
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Scout dana 20 vs jeep dana 20 (internal gears)

I have a '74 scout II with the amc 258 and t-18 4 speed. I thought that the jeep forum might be able to help me out since I can't find anything on scout dana 20's. I recently bought a scout dana 20 to swap out with my crappy single speed transfer case. I talked with a tranny shop in california who has performed gear swapping in the scout dana 20 to get a lower crawl ratio. From what I understand jeep dana 20's have the following internal gears:

input - 18-8-23
intermediate - 18-5-9
bottom- 18-8-24
bottom - 18-8-22

My question is does the scout dana 20 use these same gears? If not does anyone know what gears the scout uses? Trying to get my ducks in a row before I rip into the dana 20 I have now. Want to make sure I know what goes where before disassembling it. Any help or links would be appreciated. i have tried some of the scout forums but I don't think anyone knows. thanks again.

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post #2 of 4 Old 05-14-2004, 11:59 PM
only in a jeep cj
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Well, I have a spare Dana 20 on the shelf out in the "shop"/garage. It came from an auto 1979 Scout II....so I'm missing the input section found on the manual versions, but did get the "bull gear" from the end of the transmission. Anyway, I have it as a spare for my 75 CJ-6. Short of taking it apart, is there an easy way to found out the info you seek? I would think the gearing would be the same, but who knows.

Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
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post #3 of 4 Old 05-17-2004, 10:30 AM Thread Starter
pityocamptes
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Quote:
Originally Posted by only in a jeep cj
Well, I have a spare Dana 20 on the shelf out in the "shop"/garage. It came from an auto 1979 Scout II....so I'm missing the input section found on the manual versions, but did get the "bull gear" from the end of the transmission. Anyway, I have it as a spare for my 75 CJ-6. Short of taking it apart, is there an easy way to found out the info you seek? I would think the gearing would be the same, but who knows.
Thanks. I figuered that I would have to tear into the thing eventually. Seperated the parts out and found a schematic of the transfer case. I found that the Scout Dana 20 does not have the same gears. Not even one. I guess I'll be looking to buy some. Thanks again.
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post #4 of 4 Old 05-19-2004, 12:19 AM
CSP
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I've swapped parts a few times between Jeep and Scout Dana 20's. I've never paid any attention to the numbers stamped on them. So far, I've found everything to be interchangable. The only difference I've ever seen is the shifter towers aren't the same.
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