manual to automatic conversion

[lpapa15]

I own a 79 4x4 Cheyenne 3 speed manual I want to convert it to an automatic on the tree.  I have the new steering column with the shifter on the tree and a new th400.  is there any advice on the conversion?    Manual to auto...

[Swims350]

you get the column linkage for the auto? Also gonna need the correct t-case adapter to go from a th400 to your t-case. There could be a difference in case length of the transmissions too which could mean drilling new crossmember holes or driveshaft work.

[Captkaos]

You need the mount on the frame for the shift lever along with the linkages.  you will need a different driveshaft and yoke alone with moving the crossmember.