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turbo 400 ?

77scottsdale

77scottsdale

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i have a short tailshaft th400 looks like this one but its stock not b&m
9df4_1.JPG



will a np205 and adapter plate work with it i think it is 4.00in shaft 32 spline came out of an 85 2wd lwb
 
pretty sure the tailshaft is too long once the tailhousing is removed.
 
I've heard of some guys doing that with some combinations. Not sure if it was a 400. watch the spline engagement length. It could well be that after you cut it short enough, there won't be enough left. Can't remember how long the splines are on that trans.
 
Also be careful of how you cut it. If you get it too hot you'll lose the heat-treating and it'll break under load.
 
here is the specs of the one i have 4.5" shaft with 2.75" of that being spline
 
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if it can be cut i will use a band saw with lots of oil or some water, does any one have the specs for a 4wd th400
 
If your tranny is exactlly like the one you pictured, AND your transfer case is the short 32 spline input figure eight style with the tall adapter, it will work.
Jimbo
 
The 2wd fixed-yoke TH400 uses the same output shaft as the 80-84 TH400/NP205.

The 85+ TH400/np205 (round pattern) version uses a shorter shaft.
 
its not a fixed yoke it has a bushing and all that the yoke slides into on the tail shaft housing
 
Do you have the t-case yet? If not, what about going divorced?
 
Availability comes and goes. Sometimes I see a lot of them, sometimes none for months. It's a good route to go if you have the room for it, though.

It generally requires custom-length driveshafts but the payoff in cheaper trannys and better driveline angles is worth it, IMO. Besides, if you get a good HAD or Tom Woods shaft, you're good pretty much forever. Maybe just need to buy u-joints occasionally, same as with any other truck.
 
77scottsdale said:
yea i thought about that too, are divorced dodge cases easy to find
Click to expand...

look for a international truck or suburban style body one. thay have all divorced cases and thay are 205. but the best factor is thay are 34" frames. gm is 34" frames. so grab all the mounting brackets and bolt it in basicly.
 
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