WHAT IS PISTON TO VALVE CLEARANCE? HOW BIG OF A CAM CAN I RUN? HOW MUCH LIFT CAN I RUN? WHAT IS THE DANGER ZONE FOR PISTONS AND VALVES? WHEN DOES THE INTAKE VALVE HIT? WHEN DOES THE EXHAUST VALVE HIT? WHY CAN'T I RUN A BIGGER CAM? DOES THE PISTON CHASE THE VALVE? DOES THE VALVE CHASE THE PISTON? DID RICHARD REALLY CUT UP AND ALUMINUM 5.3L BLOCK? CHECK OUT THIS VIDEO WHERE I SACRAFICED AND SECTIONED AN ALUMINUM 5.3L LS BLOCK AND 706 CYLINDER HEAD SO I COULD BETTER ILLUSTRATE WHAT PISTON TO VALVE CLEARANCE IS. I ALSO DEMONSTRATED THE CRITICAL DANGER ZONES FOR THE INTAKE AND EXHAUST VALVES AND SHOWED WHY LIFT ISN'T IMPORTANT.