Morrison Team Motorsports

Compression Ratio Calculator

 

Bore in Inches

Stroke in Inches

Head Chamber Volume

cc

Crushed Gasket Thickness

In

Engine Block Deck Height

In

Valve Relief Volume

cc

# of Cylinders


 

Displacement

CID

Compression Ratio

NOTES:
Engine Block Deck Height
- If block has not been altered from stock other than bore size, enter 0.025
Crushed Gasket Thickness - Head gasket thickness can range from .020 to .045 inch. If you are not certain of the gasket you are using, enter .035
Valve Relief Volume - Stock flat top pistons have roughly 4 cc volume. Enter a minus sign in front of the volume number. For domed pistons, enter a positive number for the amount of volume displaced