From 3000 to 4500 rpm, the increases averaged 5+ ft/lbs. Match with a dependable Edelbrock square-bore carburetor for maximum performance gains. Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant #1076, DO NOT USE END SEALS GASKETS.; Sealant must be used on intake bolt threads if the threads extend into lifter valley or coolant passage.
