350 Compression Calculator

Simply fill in the form below to calculate your compression ratio.

Bore (diameter)

Stroke

Cylinder Head Volume

Effective Dome Volume(-) dome, (+) dish

Deck Clearance

Compressed Gasket Thickness.040 is standard thickness

Number of Cylinders

350 Block — Displacement Reference

Over	Bore	3.75" stroke	4.00" stroke	4.25" stroke
Stock	3.875	354	377	401
+.030	3.905	359	383	407
+.040	3.915	361	385	409
+.060	3.935	365	389	413