j heads..more perf. questions

might have been 63dartman who started the thread cause I already blew the big bucks on the eddy heads and am so far happy with them. Anyhow, there are 2 things that are unknowns which could be hurting you. Compression and where the cam really is in relation to the crank. There is a good chance you are okay, but an equal chance that your cam is not where it should be. Also, do you know how far the piston is down in the hole? That could make your 9:1 ratio 8:1 real easy. Just a couple of things you probobly already know, but my 2c.