Could this be true???
I was told by a guy who built a BBC that due to the amount of work done on a set of heads (extensive port & polish, valves etc...) + other things done to the heads I am not aware of... that the heads brought DOWN the actual compression of the pistons. Example: He said: "due to the amount of work done to the heads & pistons being 12.5's, the compression comes out @ 10.2". Is this BS??? How is it possible? Scooter