I see a mis-match here. With flat-top pistons, 76 cc heads and assuming zero deck and a 0.039" gasket, your compression ratio will be 9.05:1. If you didn't pay attention to the deck height when you built the motor, I'm betting the piston is somewhere between 0.020" and 0.040" down in the bore at TDC. 0.040" in the hole would put your compression ratio at 8.3:1 This cam (rough idle, 2,800 to 6,000) is designed to work with 9.5 up to 11.0 to 1 and will bleed off most of your already low compression, resulting in poor power. In my humble opinion, you've started with the wrong heads for what you want to do (too much volume).

What if i were to run domed pistons to up the compression. what kinda is reasonable to go with and how big of a dome would i need. can u run them with stock rods...