th400 mated to a toyota case?

dja410 · Jul 17, 2009

Ok so im building a 48 cj3a and ive put a 14 bolt in the rear and 8 lug 44 in the front. I plan on running a small block chev backed by a th400. Heres my question. I am on the fence as to which case to run. I was thinking a 300 or a 205. Now i know they make an adapter to mate the 400 to a toyota case. So i was thinking about possibly going that rout and puting a 4.7 kit in the case. Does the toyota case hold up well to 42s and a mildly built 350 or will i be exploding my case every other trip.

NotMatt · Jul 17, 2009

14 bolt... 60 up front (which is what you will end up with eventually if you're running 42's), V8 power....

Go for the 205. Even a 300 would be marginal unless you were going to dump a bunch of cash into it to upgrade the outputs and such.

zukkev · Jul 17, 2009

If room is at a premium---I'd think the 300 would hold up well, as long as the outputs are upgraded (as Matt said...); If you have the room, I'd also go for the 205, maybe even a 203/205 doubler.....

CHOP SHOP · Jul 17, 2009

I have a th400 to d300 adapter for 75 bucks.

Damnyankee · Jul 17, 2009

why does everybody say you have to upgrade the ouputs of the D300?

I've seen more busted cases than stock output shafts.

Damnyankee · Jul 17, 2009

I have a dana 300 case and shift rails. everything but the input, rear output and gears.
You can even have the yokes.

dja410 · Jul 17, 2009

Well a 300 is what i realy want to run. I had a th350 mated to a 20 case but ive heard that the th400 is a better tranny and has more of an after market world which i liked. I have more then enuff room because i am in the process of three linking the rear which is stretching the rear out 13 inches. I am also considering linking the front though ive already stretched it out 4 inches. I am very interested in the adapter for 75$ my number is 253 508 4226 give me a call if you got time.