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th400/quad to th400/?

Posted: Wed Nov 06, 2013 6:57 pm
by jeep_j10_1975
i really would like some input on what transfer case i should swap my quadratrac for? im looking for something that can handle 35"-37" tires, a built 401 and the occasional heavy foot. let me know what transfer cases other than the quadra trac that your running behind your th400s, and what was involved in your swap and if your happy with it. thanks

Re: th400/quad to th400/?

Posted: Wed Nov 06, 2013 7:13 pm
by msh227
Stay with the QT. You could put a D20 in but the adapter is balls expensive.

Re: th400/quad to th400/?

Posted: Wed Nov 06, 2013 7:59 pm
by Blazer3664
If you are willing to rebuild the trans (or strip it and put it all back together) to change the tail shaft any t-case from a GM th400 can be bolted up, with the stock adapter it goes with.
203, 205 (kinda semi-rare), 208, and several others.

If you decide to do something like that and need the short 32 spline output for a th400 pm me, I got one I'd send you for a good price.

Jim

Re: th400/quad to th400/?

Posted: Wed Nov 06, 2013 8:16 pm
by jeep_j10_1975
im thinkin i want to use a gm np205. what do i need to swap to this?

Re: th400/quad to th400/?

Posted: Thu Nov 07, 2013 4:44 am
by tgreese
jeep_j10_1975 wrote:im thinkin i want to use a gm np205. what do i need to swap to this?
Basically, for any different transfer case ... Get the transfer case. Get the adapter that goes between the transfer case and a TH400. Get the output shaft for a TH400 that fits the transfer case input gear. Remove your TH400 and disassemble it completely to remove the output shaft for the Quadratrac. Reassemble with the new output shaft. Bolt everything together. When the transfer case is back in the Jeep, figure out the linkages, drive shafts, etc.

Re: th400/quad to th400/?

Posted: Thu Nov 07, 2013 5:16 am
by Blazer3664
^^ What he said.

Junkyard/C-list the adapter and t-case. You might check with your local transmision shops for the output shaft, sometimes just as cost effective since you wont have to strip the trans to get it.

Jim