Test test test
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.
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.
