Compression ratio of a 351 Cleveland to these with 4V heads and dish Pistons

[1972grand]

I can give whatever information that I know or have on this vehicle I have a 1972 Grand Torino sport 351 Cleveland 2v I have a four barrel carburetor air gap intake with some 4V heads I'm getting ready to put on and a 520 530 lift cam for it I was wanting to know if anybody knew the compression ratio off hand and if not maybe some information or a online tool to figure it out thanks everyone

 

[Hemikiller]

The '72 Q-code engine had a factory advertised compression ratio of 8.6:1, which was (for the first time) accurate to how they were built.

If you have dished pistons, you'll need to know the dish volume, or calculate it from it's dimensions. The factory '73 pistons were supposedly 8cc vs the 72-earlier flat tops at 3cc for just the valve reliefs.

https://diamondracing.net/p-10-compression-calculator.html

 

[Q1SVT]

+1 on hemi's post...

You did not provide the cam timing for the intake closing... but with your lift 520-530 , my guess, stock compress will be a little to low. what is important is what is your dynamic compression? the link to diamond provides the dynamic too...

There will be many opinions on what dynamic should be... mine is you will want it in the 8.0-8.3 range. yes it will run on pump gas.