ok , here is the deal. i built a sb 350 for my airboat 93 model with vortec heads, 9.5/1 flat tops ,aluminum intake,holley 650 and the cam is flat tappet melling 22210 (specs .450/.461 lift, 224 duration @.50 114 lobe center) i just recently upgraded to procomp alum heads with 210cc runner, 2.02 valves and the same 64cc combustion chamber, also used a lt-4 hot cam kit( .525/.525 lift 218/228 duration @.50 112 lsa). with the original vortec heads i could turn it to 5000 rpms and now i can only get around 47-4800. but ways i was running 34 deg total timing. my question is why, does anyone think that i have too little carb or do i just need to jet it up or did i just go the wrong way with my setup?