So the discussion last weekend was, If I have a later M20 with the fine spline input and 32 spline output. It's a direct swap lengthwise to a turbo 400 in my chevelle. My car has a turbo 400 right now, and the muncie I bought is a 1970 model, which is correct for the 70 chevelle, but I was just hoping to swap out the tranny and use my stock driveshaft. Jim

Muncie and THM350 have the same length driveshaft. Although you do have the correct yoke.

So the discussion last weekend was, If I have a later M20 with the fine spline input and 32 spline output. It's a direct swap lengthwise to a turbo 400 in my chevelle. My car has a turbo 400 right now, and the muncie I bought is a 1970 model, which is correct for the 70 chevelle, but I was just hoping to swap out the tranny and use my stock driveshaft. Jim

The TH400 is longer!

You'll need a longer drive shaft . I will be doing this simular (M22W) change out in the next month or two in my 71. Driveway replace in planning stage is the hold up

Muncies, Borg-Warner, 3 speeds, Powerglides and TH 350's are all the same length, but some had different spline counts - TH 400 is an inch or so longer than all the others. I don't like to spend extra $ any more than the next guy, but a drive shaft reconstruction is about $125 - $150 balanced and with new joints, well worth the $ for peace of mind, IMHO

Hi Guys
I have a 1970 454 Ls5 400 trans, witch seems to be out of a 1972 402. can you guys help me out on eather find the right one or are they the same. iam new to the chevelle and need a little help. thanks

Greg, are you saying your looking for a correct 70 turbo 400? or looking for the correct drive shaft? jim

Hi Jim
I think i have the wrong Trans the tag said 72CD9688 if it is wrong then iam looking to find the wright one, can you help. Thanks