HOW TO MAKE BBC POWER. PEANUT PORT VS ALUMINUM HEADS. DO CHEAP ALUMINUM BBC HEADS WORK? HOW MUCH POWER DO SPEEDMASTER BBC HEADS MAKE? CAN THE AFR 265 HEADS MAKE OVER 600 HP? DO OVAL-PORT HEADS MAKE GOOD POWER? SHOULD I SPEND MORE $ ON GOOD BBC HEADS? CHECK OUT THIS COMPARISON BETWEEN STOCK PEANUT PORT HEADS, SPEEDMASTER OVAL-PORT HEADS AND AFR 265 OVAL PORT HEADS. THE SPEDMASTER HEADS OFFERED BIGGER PORTS, BIGGER VALVES AND MORE PEAK FLOW, BUT THEY COST LESS AND MADE LESS POWER. WHICH ONE WOULD YOU PICK?