Just made a big upgrade on our 460 Big Block Ford with a set of Edelbrock Performance Performer RPM cylinder heads from Summit Racing Equipment —292cc intake ports, 100cc exhaust ports, and 75cc combustion chambers for serious flow. And to keep it all locked down, we added ARP's new head bolt kit with 8740 chrome moly material, boasting 108k PSI of tensile strength. Getting this engine ready to roar. Watch the new Engine Power episode for free: https://www.powernationtv.com/episode/EP2024-10/bet