hello i change my automatic transmission for a nv4500 but the front drive shaft is too tight, what length to remove to be in the right measure ? .. I will have it cut and balance at a professional shop thank you

I don't know for a fact but for my previous builds I usually split the difference of the travel and maybe add a half inch to make it longer rather than shorter, if that makes sense.

So let's say from when splines go in till they bottom out is 4in, I would make it so that it was in 2 and 1/2 in and inch and a half of free space before it bottoms out. It would be more important with shackle travel, but the way these front end setup with kind of a 4-link there's really not a lot of in and out travel.

Hopefully someone knows the exact measurements

My front shaft measures 30 3/8" from t-case(241DHD) 4 bolt flange to front yoke strap flange. Nv4500 trans