Compression Ratio per Camshaft Size

273 said
Yes would mostly be Chevys and Fords.

My question is what difference does it make what engine the testing was done on? That’s an ignorant claim at best.

Cranking compression is a measure of IVC and static compression ratio.

I have never seen any correlation between cranking compression and the proclivity to detonate.

Then there is what some erroneously call “dynamic” compression ratio which is actually effective compression ratio and should be called such.

That a whole other discussion.