having a little issue...

ok so i want to send it out to deck the block like .020 cut off for a 9.8:1 comp so that when they drop another point it will still run... but anyways im trying to figure out piston to valve clearance. so by putting the piston at tdc (.180 down) thw valve will open .345" till it hits the piston! so i freaked until i pulled my head out of my :bootysha: and realized that the pisont wouldn't be at TDC. so now my question is that do i have to put it all back together to chk it, ie a piston, cam, t lifters, pushrods etc. and spin the motor over to "x" degree crank timing and push the valve down till it hits and then -.100" for clearance??

thx ed

and why is fabo being so slow?:wack: