VACUUM TESTING FIXTURES
When vacuum testing valves on some heads there may be obstacles in the way. In many cases there will be some exhaust studs in the way like this 3.4L GM. Rather than opening up a can of worms trying to remove the exhaust studs, I look through my pressure testing plates to see if something fits. This is one of the more common heads I do and this plate from a Ford 2.3L fits this and several others perfectly.

Dan Matton
D and D Auto Machine
Bloomington, MN
March, 2020