Why so much inital timing???

mopowers said
I used this one- RSR Static Compression Ratio Calculator and used positive 7.5 cc's for the piston valve reliefs and -.015" for deck height since the pistons are out of the hole. It seems backwards, but that's the way the calculators work. The calculator I used doesn't take the larger bore diameter of the head gasket into consideration though. The wallace one does and produces 9.64 with my numbers. Either way, the SCR I get is 9.6-9.7:1, depending on the calculator. Obviously, the 0.1 difference is lost in the noise.

You think??? Even though the venturi and throttle bore sizes are the same as the proform? It'll be interesting to test when I go to the track. I've got a wideband to help get them both tuned well enough before the track shootout.

Some of these guys are pissing in your cereal because you CAN run all that initial. To them, they think you have the cam too big, not enough CR etc. But they didn't spec the cam. If you spent the drachmas on a custom cam, I will absolutely promise you the cam is correct. So is your timing. Run that biotch. Just because they can't/won't/don't do it doesn't mean your wrong.

You did it right. You picked a CR and then bought a cam for the CR. That is how you do it when you do it.