My current Hutch 400 has 3/4" cut off the output shaft, and I run the reid short tail ( I run a complete reid case set up) to get to power glide length, or in my case, 200R4 length. I was able to use the same driveshaft. 28 1/4" o/a length.

 

350 has 3 lengths. 5 if you include 4X4,s.

 

The TH350 and TH400 output shafts have different spline counts, so you'll have to use a new drive shaft front yoke at a minimum.

 

If you have a short tail TH350, you can run a PG length tail housing on a TH400 and a short output shaft and it is 1/8" shorter than a TH350. There are at least 2 different ones on the market available with a roller bearing or bushing. Some people just cut 5/8"-3/4" off a standard out put shaft but there are ones available already the correct length (8.5") or with extra long splines and you cut to your desired length.

So short story long, the answer to your question is "you can make it work". lol

 

If there both short tail housings I believe you only need to shorten driveshaft about an inch and a half I don’t know what it would cost where you are but around me we pay about $100.

 

Okay thanks guys! Yeah driveshaft is a mark William's aluminum bonded shaft so shortening it isnt an option.

 

👍 understand about driveshaft then I just like to have standard comments so if need another one quickly doesn’t become issue