What would the compression be

7173Mustangs.com

Help Support 7173Mustangs.com:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Hemi, Great chart, thanks. Ford was notorious for exaggerating compression ratios. Usually .75-1.0 points. Chuck
 
Cranking pressure is a whole different thing. And depends on how fresh the battery, the motor, oil viscosity, temp, and etc.
Generally in a compression test all cylinders should be within ten percent of each other. Actual compression psi can vary per everything above.
 
Back
Top