CID/Compression Calculator

Enter the required information into the black boxes and click results!

Tip!

The CID/Compression calculator is set up to calculate flat top engines.  You can easily calculate a domed

engine by subtracting the volume of the dome from the Cylinder Head Volume when input. If you run a dished or

a piston with a valve relief, you can add that volume to the Cylinder Head Volume to be more accurate.

All calculations are done with a Zero (0) deck height.

 

Common Chevy Numbers
Bore Stroke CID
3.671 3.750 3.500 3.875 3.780 4.000 3.740 3.875 3.780 4.000 3.900 4.000 3.900 4.000 4.155 4.030 4.125  3.10 3.00 3.48 3.00 3.27 3.00 3.48 3.25 3.62 3.25 3.48 3.48 3.66 3.62 3.48 3.75 3.75 262 265 267 283 293 302 305 307 325 327 332 350 350 364 377 383 400 

 

Bore Size:  

Stroke of Crankshaft:

Number of Cylinders:

Cylinder Head Volume:

Head Gasket Thickness:

CID(Cubic Inches in Displacement):        

Compression Ratio            

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Calculators compliments of HRS Applications for use for The Dirt Forum "Users"!

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