A 4l60 will bolt in place of a th350 - with minor mod's - in some cases none.
Depending on the vehicle - the cross member might have to move rearward ~ 1/2" and the driveshaft might need to be shortened.
I have had to do no mods or both to mechanically do installations.
Capacity wise a stock 4l60 wins hands down over even a decently built 200r4. The 200 series clutch just don't have the surface area.
For $600 you can buy all the aftermarket parts needed to build a 400 #/ft capable 4l60. Not many inliner's here are making more than that torque output.
If your making BIG power - put a 4l80 in it and forget it. They are a th400 + and extra planetary gear set to get OD.
Last edited by efi-diy; 11/28/16 11:11 PM.
