400 budget compression HELP +++++

rmchrgr said
Go to the link, plug in the numbers, look at the results.

Engine Compression Ratio (CR) Calculator

400 head gasket bore is 4.410. .030" over bore is 4.372. B engine stroke is 3.38.

using this one comes up at 9.18

using Calculators : United Engine & Machine Co. Incorporated, Performance Pistons same figures comes up at 9.179
this one Compression Ratio Calculator - Wallace Racing 9.18
this one Compression Ratio Calculator | GTSparkplugs 9.18