Posted 7/4/2020 13:07 (#8353546 - in reply to #8353522) Subject: RE: 1967 Chevy c50 dump truck
w/c Illinois
I had that exact year and model and it was vacuum. Mine had a hole in the diaphragm on the shifter pot on the rear axle. I cut out a new diaphragm using an old tractor inner tube. It worked for years and was still working when I sold the truck.
1967 Chevy c50 dump truck
