You are right onebadgmc, comp ratio is approx. 12.3-1 and the valve lift stated is at the cam. Lift at the valve is .695 on the intake and .635 on the exhaust. Cam was installed as per cam card.
I am running 4.11-1 diff ratio, I leave the line at 5800rpm on the transbrake, powerglide, tyre size is 28 x 10.5 x 15. Pushrod size is 7/16.
http://www.youtube.com/watch?v=kMVL2mBvsik