well i know i have to cut the yoke of the 400 off and weld onto the 350 driveshaft and i believe the TH350 was a short shaft but when i just set the driveshaft up next to the torque arm to get a rough idea if it was the same size it looked like it was still too long... does anyone know exactly how long the driveshaft has to be from weld to weld for the TH400 tranny?

 

well i posted on camaroz28.com and they told me this site was better for information so somebody has to know what i'm talking about.... someone who's done the conversion wanna chime in?

 

The TH400 and TH350 are the same length unless you have one of the long tail versions.

 

ok thanks, do you know by chance how long that is exactly so i can find out if i have a short or long shaft? i still have the TH350 sittin in the garage so i could look at it if i needed to. the cone that covers the yoke is about 8 inches long maybe?

 

if it will help. i replaced 700 for a 400. i installed tha 400 slip yoke all the way in then backed it out 3/4 in. measured center to center on yoke. my stock shaft was to short so i pulled a larger dia. shaft from junk yard and had it cut total cost about $80.