Test test test

Earlie A said
See the drawing below. If the chamber is 4.180" wide and the bore is 4.080" wide, there is a 0.100" mismatch which is not good for flow. Is the best option to use a 4.180" gasket and use a 0.050" chamfer on the top of the bore? That's a pretty large chamfer. Your engine is a 4.030" bore with a 4.180" chamber, which would make for a larger mismatch.

View attachment 1716209798

Trust me I know. But if it hurts so bad how does this engine last and run 6.0’s (9.30’s in the 1/4). It’s three years old. Inquiring minds want to know. I do know you have to work the chamber to get them up over 300cfm. I personally will give up compression for flow any day of the week.