Just how rough it is running?

What kind of throttle linkage does it have? If there are any clamp type bell cranks in the linkage, then maybe check the throttle linkage at WOT to make sure pedal to throttle-to-pedal is still adjusted properly?

Last edited by Norcal Dave; 10/03/2017 6:47 PM.

~ Dave
1950 Chevrolet 3600 3/4-ton with 261 engine & T5 Transmission