Feed Your Big Chevy Serious Airflow with Edelbrock Big Victor Spread-Port CNC Cylinder Heads

Edelbrock’s Big Victor Spread-Port CNC Cylinder Heads aren’t for the faint of heart. They’re designed for 598 cubic inch and larger big block Chevy race engines, especially those running turbos or nitrous oxide. The Big Victors are cast from A356-T6 aluminum in Edelbrock’s US foundry using a Hot Isostatic Pressing (HIP) process. HIP creates a dense casting with high tensile strength to withstand high cylinder pressures associated with high-horsepower, high-RPM engines.

The Big Victors have CNC-ported 498cc intake runners that flow 523.8 CFM of air at a whopping one inch of valve lift. The CNC-machined 82cc combustion chambers have a conical shape instead of a radius shape. This helps reduce detonation, a big benefit for turbocharged and nitrous-fed engines that generate very high cylinder pressures.

The combustion chambers are machined for 2.5-inch intake and 1.80-inch exhaust valves. The shallow 12-degree valve maximizes airflow and velocity through the head to further improve performance. Manganese bronze valve guides are fitted with precise tolerances to allow the valves to seal securely. That eliminates leak-down and increases cylinder pressures during engine operation.

Other features of the Big Victor Spread-Port CNC heads include:
• Raised and spread intake ports
• Raised exhaust ports
• Copper valve seats for use with titanium valves
• Five-angle valve job

Edelbrock Big Victor Spread-Port CNC Cylinder Heads come as bare castings and are sold individually.

SEE EDELBROCK’S BIG VICTOR SPREAD-PORT CNC CYLINDER HEAD FOR BIG CHEVY AT SUMMIT RACING