Stockish 340 upgrades, cam needed

Wyrmrider said
Km your cr is in the ballpark to run any of those Lunati cams mentioned
You first need to know the rev range she want in driving that stick with the 3:23 gears
If you go with the bigger cam you might up the cr a little
with the short one you should be ok in any case - you are fine tuning trying to keep as much pressure as possible
when giving the final info put it all in one post with the dome , ht above deck etc etc

That's why i put all the math in post 69
All he has to do is add his true discovered cc's and we have a compression ratio.
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Cudafever said
You can us a online calculator, but there are thing that you need to cc before you can get a accurate compression reading.
For example my 4.10 bore piston stuck up .017" above the block(so it take away from the top dead center reading because it removes head space) How Ever! because of the valve reliefs in the head was larger than the .017' pop up of the piston, it became a number that was add to the head volume. bore and stroke are set! the head volume make the compression ratio)
hope that wasn't confusing.

So here we go
head cc 70
head gasket cc 8
10.5: compression piston cc 7.35(in the hole even though it a pop up piston because of valve relief in piston)
above head total
85.35cc

Bore X Bore X Stroke X .7854 =43.70 X 16.387(convert to CC)=716.12 CC
Below head or bdc volume
716.12

716.12+85.35=801.47 cc Divided by 85.35=9.3903925
Aka my 10.5:1 piston equiled a actual compression ratio of 9.40:1
Compression Ratio = 9.40:1.

So let us you head cc on my .060" over bored 340 motor
65 head
8 head gasket
piston 7.35
total 80.35
80.35+716.12=796.47 divided by 80.35=9.9125078
New compression = 9.91:1

I used the felpro .040" thick head gasket , So your compression will be slightly lower........However, you decked and leveled your block, so it might be real close.
Edit: for math! Bore X Bore X Stroke X .7854= 43.70

NOTE CC below deck is added to head volume and CC above deck are subtracted. Example is a domed piston would have X amount of cc subtracted from the head volume. and your .015 pop up would also if there was no Valve Reliefs in the piston.
Even though The piston sets .015 above the deck there is more cc in the valve relieve than the piston pop up. 7.xx cc for the piston is added to the head volume. hope that make sence.