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- Big Block Chevy 396-502ci
- Port Volume: 300cc/129cc
- Valve Springs for Mechanical Roller
- Valve Size: 2.25"/1.90"
- 106cc Combustion Chamber
- Assembled, Sold Individually
- A356 aluminum casting heat treated to T6 specifications
- Extra thick deck and extra material in the spring pockets for use with high-lift camshaft and heavy spring combinations
- Exhaust port exits are raised .534" for impressive flow and great power on competition big blocks up to 510ci with 4.310" or larger bore
Combustion Chamber Volume: 118cc Intake Runner Volume: 300cc Exhaust Runner Volume: 128cc Intake Valve Diameter: 2.25' Exhaust Valve Diameter: 1.90' Valve Stem Diameter: 11/32' Valve Guides: Manganese Bronze Deck Thickness: 9/16' Valve Spring Diameter: 1.635' Valve Spring Maximum Lift: 0.880' Rocker Stud: 7/16' Guideplate: Hardened Steel Pushrod Diameter: 3/8' Valve Angle: 24° Exhaust Port Location: Raised .534' Spark Plug Fitment: 14mm x 3/4' Reach,
Gasket SeatValve Lift Intake Exhaust .100' 72 64 .200' 140 122 .300' 213 167 .400' 273 199 .500' 318 223 .600' 342 240 .700' 346 251 Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Since founder Vic Edelbrock Sr. began building performance intake manifolds in 1938, Edelbrock has grown into one of the most trusted names in American high-performance parts, from carburetors and intake manifolds to cylinder heads, crate engines, and EFI systems. JEGS has spent decades supplying Edelbrock components to racers, engine builders, and street enthusiasts, backing this extensive lineup with in-house technical support, fast shipping, and a Price Match Guarantee so you can choose proven Edelbrock parts with confidence.
Cast Aluminum Cylinder Heads Developed for Competition
These lightweight cylinder heads for big block Chevy increase coolant heat dissipation and incorporate extra deck material to maximize gasket retention under high compression. They have specially-contoured combustion chambers, high-flow ports, and reinforced rocker stud bosses. Available bare or assembled, cylinder heads are sold individually.
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Victor Jr. 24° Cylinder Heads
Ideal for ultra-performance street machines and most racing, Victor Jr. 24° Heads have 300cc ports that produce impressive power on big blocks up to 510 cubic inches with 4.310" or larger bore. Their exhaust port exits are raised .534" to vastly improve exhaust flow. Maximum lift for hydraulic roller or flat tappet camshafts is .700"; maximum lift for mechanical roller camshafts is .880".
Victor 24° Cylinder Heads
To gain even more horsepower, the Victor 24° Series features partially CNC'd chambers, rolled-over deck, and altered valve locations that improve combustion efficiency. 340cc ports flow 390+ cfm on big blocks with 4.470" or larger bore for better flow velocity and throttle response. Like Jr. 24°, exhaust port exits are raised .534" and maximum lift is .700" (hydraulic) or .880" (mechanical).
Musi Victor 24º CNC-Ported Cylinder Heads
The only out-of-the-box head capable of 950+ HP from conventional big block port locations! Designed by 5-time Pro Street Champion Pat Musi, this version of the Victor 24° Cylinder Head has fully CNC'd chambers & ports. Exhaust port exits are raised .750" and maximum lift is .880" (mechanical).
Big Victor Spread-Port Cylinder Heads
Intended for big block Chevy race engines with 4.840" bore, these heads feature Edelbrock's Hot Isostatic Pressing (HIP) for superior strength and stability. Pat Musi and Jesel assisted with the design to improve valvetrain geometry, delivering Pro Stock level technology up to 10,000 RPM.
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