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Victor Big-Block Chevy Cylinder Head Mechanical Roller Camshaft

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The Edelbrock part # 77409 Victor 24° 340cc cylinder head features a rolled over deck, altered valve locations and partially CNC'd 199cc chambers for cost effective performance. The Edelbrock 77409 cylinder head comes complete with springs to suite mechanical roller camshafts. Mechanical roller cam springs include Manley dual-spring valve springs & titanium retainers good for up to .880" lift. The 340cc rectangle ports produce impressive flow and great power on competition big-blocks with 4.470" or larger bore. Exhaust port exits are raised .534".

Documents & Installation Notes


Availability Available
Application Universal
GTIN 00085347774098
Availability Note Available to Order
Warranty 12 Months
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Installation Notes
  • Matching stud girdle #7796 must be used with stud mounted rocker arms. Deck thickness: 9/16", rocker stud diameter: 7/16", pushrod diameter: 3/8" (width of slot in guide plate).
CNC Ported No
Combustion Chamber Volume 119.0 cc
Deck Height 10.2 in
Deck Thickness 0.562 in
Exhaust Valve Diameter 1.900 in
Guide Plates Included Yes
Intake Runner Volume 340.0 cc
Intake Valve Diameter 2.300 in
Material Aluminum
Push Rod Diameter 0.375 in
Rocker Stud Diameter 0.437 in
Valve Angle 24 deg
Valve Spring Diameter 1.635 in
Valve Spring Maximum Lift 0.880 in
Valve Stem Diameter 0.341 in