Edelbrock Victor Pro-Port Cylinder Heads for GM Product images may differ from actual product appearance. Big Victor BB-Chevy Pro-Port Bare Cylinder Head* A-356 aluminum casting with unmachined combustion chambers Chambers compatible with most 18° Big Chief-style pistons Hot Isostatic Pressing for exceptional strength, durability, and finish 4.84" bore spacing (Intake/Exhaust specs in More Info below) Shaft-mounted rocker system designed with Pat Musi & Jesel greatly improves valvetrain geometry Same technology used on Pro Stock race engines, providing stability up to 10,000 RPM Victor Pontiac Pro-Port Bare Cylinder Head* Aluminum casting with unmachined combustion chambers 5/8" raised intake ports & intake flange also extended 5/8" Stock bolt pattern maintained (Intake/Exhaust specs in More Info below) Center water outlet for better cooling Interlinked rocker stud pad with extra thread engagement for improved valvetrain stability Intake valves moved away from cylinder wall for enhanced burn characteristics when used with larger-than-stock valves *Sold Individually

350-777569

Big Victor Pro-Port Bare Cylinder Head BB-Chevy 18° Chamber Size: 70cc Includes valve seats & valve guides (not installed) More info on Edelbrock 777569 Fits Applications

$1,553.99 Ships 06/08/12

350-77819

Victor Pro-Port Bare Cylinder Head Pontiac racing applications 12.6° Chamber Size: N/A Includes valve seats & valve guides (not installed) More info on Edelbrock 77819 Fits Applications

$1,233.99 Ships 06/08/12