: TH400/Dana20???
Dustin Smith 11-17-2003, 03:48 PM I have been searching for a Nailhead pattern TH400 with the BOP adapter form a Jeep Commando or J-series/Waggie, and I came across a piece of Information i need to verify.
Someone had posted on IFSJA that if you find any short shaft GM or BOP TH350 or TH400, the Dana 20 adapter from the TH400 in the FSJs and Jeepsters would bolt right on, thus allowing you to use the auot version Dana 20 on the GM transmission, without any further swapping. Can anyone verify this?
ChiScouter 11-17-2003, 03:53 PM PM'd you
i have a chevy th400 with adapter that goes to a d20, after removing both tail shatf housings on the jeep th400 and the chevy th400, they were identical.
Dustin Smith 11-17-2003, 04:28 PM Is the TH400 you have from the Chevrolet 2wd?
Dustin Smith 11-17-2003, 06:12 PM Heres the plan, tell me if it should work or not.
231 Buick V6
Cadillac BOP TH400 short shaft tranny
Jeep TH400-Dana 20 adapter
Jeep Dana 20
No need for any special BS adapter, or anything out of the ordinary. See any problems?
ih4x4 11-17-2003, 06:25 PM I have a TH400 with the BOP adapter form a Jeep Waggie in stockton california
Dustin Smith 11-17-2003, 06:31 PM Im trying to avoid the adapter, if at all possible. It adds ~2" , and I could use the 2" in the driveshaft.
According to what I have read, the Cadillac TH400 SHOULD work, and bolt right up to the Dana 20 adapter no sweat......
I will keep you in mind, however.. Thank you.
oldjeep 11-17-2003, 06:37 PM Originally posted by Dustin Smith
I have been searching for a Nailhead pattern TH400 with the BOP adapter form a Jeep Commando or J-series/Waggie, and I came across a piece of Information i need to verify.
Someone had posted on IFSJA that if you find any short shaft GM or BOP TH350 or TH400, the Dana 20 adapter from the TH400 in the FSJs and Jeepsters would bolt right on, thus allowing you to use the auot version Dana 20 on the GM transmission, without any further swapping. Can anyone verify this?
Yup, that's what I'm doing. Found an AMC TH400 with the adaptor and bolted it to a short shaft Buick Th400.
oldjeep 11-17-2003, 06:38 PM Originally posted by Dustin Smith
Im trying to avoid the adapter, if at all possible. It adds ~2" , and I could use the 2" in the driveshaft.
According to what I have read, the Cadillac TH400 SHOULD work, and bolt right up to the Dana 20 adapter no sweat......
I will keep you in mind, however.. Thank you.
The adaptor does not add 2". The Universal or nailhead case is 2" shorter at the bellhousing than a normal Th400.
Dustin Smith 11-17-2003, 07:02 PM Ok, I had read that somewhere, but it was an isolated instance, so I didnt lend much credibility to it. Regardless, the use of the tranny without the adapter appeals to me much more.
Thank you so very much for the help. Any more advice you can lend, since youre doing the same thing?
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