The Chevy cars had the vacuum shift from about 1940 to 48. I dont believe they were ever put on trucks. It was not one of the better ideas. They used to sell a kit that would eliminate it. We have an old trans. from one laying around the shop.

George


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
In the Gallery Forum