Need info on my P-15 motor

[blackp7coupe]

I know the compression ratio,  what should the compression be, in pounds? 

Thanks for your help.

[DJ194950]

In a new engine 115lb. and even across would be ideal. Never seems to be perfect but close.

 

On a well used engine but still runs good anything above 70 lb. and even is OK for now. Some may say 90+ is much better which I also agree with. On the other hand a motor (flathead mopar) will still run OK if 50+ And even. Major unevenness PSI  between cylinders is Not OK.

 

So, what you got??

 

DJ