I have an old setup called a Valve Gapper. It sets on top the valve & has a dial indicator that gives the amount of clearance. I have not used it for 50 years. When I started working on Cummins Diesels I found out how much better it is to do it statically.

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