: TH400 output shaft ID + Q


Lil'John
10-14-2002, 01:58 PM
I'm looking at buying a 4wd output shaft for a TH400.

My question is: What is the length of the output shaft for a Chevy 4wd TH400?

Does anyone happen to have a picture of one?

Are "all" 4wd TH400 output shafts the same? Or did GM and Dodge use different versions?

Thanks in advance,
John

nvrenuf
10-14-2002, 02:08 PM
There are 3 or 4 tailshafts for the TH400, the length changes based on the t-case used. I have a 400/205 combo and the tailshaft sticks out of the back of the tranny 3 1/2" and it is 32 spline. This particular tailshaft is also used on some 2wd versions with a bolt on yoke, I know this because my tranny originally came out of a motorhome.

Dodge never used the TH400 but Jeep did. I have a friend that has one in a J10 with Quadrajunk and it has a long (probably 8" or 10") 10 spline tailshaft. Of course, his bellhousing bolt pattern is different from my Chevy.

Lil'John
10-14-2002, 03:08 PM
Good info nvrenuf.

Unfortunately for me, I'll be buying the shaft without the trans so I won't know how far it sticks out :(

If you happen to know the overall length of the shaft, I'd appreciate it.

I'm hoping to get the right 4wd shaft the nice way.... otherwise, I will prowl the junkyards with a BFH and a chisel and may god have mercy on the tranny I find:D :D

mnstr_fx
10-14-2002, 06:16 PM
Which transfer case are you hooking too? 203 is much shorter than 205. I think the 208 is close to the 205 length but a little bit shorter. I have a 205 and a 203 in the shop that I might be able to measure. Not sure if there is enough room or not to get a tape in there ???

Lil'John
10-14-2002, 07:34 PM
Originally posted by mnstr_fx
Which transfer case are you hooking too? 203 is much shorter than 205. I think the 208 is close to the 205 length but a little bit shorter. I have a 205 and a 203 in the shop that I might be able to measure. Not sure if there is enough room or not to get a tape in there ???

Hmmm... good info. Unfortunately, it tells me something I didn't want to see: NP203 and NP205 shafts being different :(

If you could measure the difference between the two, I'd appreciate it.