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Edelbrock 77459

Victor Jr. 24° Aluminum Cylinder Head for Big Block Chevy

Edelbrock 77459
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350-77459

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Edelbrock 77459 Victor Jr. 24° Aluminum Cylinder Head for Big Block Chevy $1,501.35
  • 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

  • Edelbrock 77459 Details

    Victor Jr. 24° Aluminum Cylinder Heads

  • Rectangular Intake Ports: 300cc

  • 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 Seat

    Valve LiftIntakeExhaust
    .100''7264
    .200''140122
    .300''213167
    .400''273199
    .500''318223
    .600''342240
    .700''346251
    Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O

  • Specifications:

    Type
    Bare
    Engine Make/Size
    Chevy Big Block (396-502)
    Usage
    Competition
    Emission
    Non-Emissions
    Cylinder Head Type
    Rectangular Port
    Preparation
    Requires Professional Preparation (Bare)
    Finish
    Cast Aluminum
    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    No
    CNC-Machined Exhaust Runner
    No
    CNC-Machined Intake Runner
    No
    Combustion Chamber Style
    Open chamber
    Combustion Chamber Volume (cc)
    118
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Assembled
    Damper Spring Included
    No
    Exhaust Port Location
    Raised
    Exhaust Port Shape
    Round
    Exhaust Runner Volume (cc)
    128
    Exhaust Valve Angle
    24
    Exhaust Valve Diameter (in.)
    1.9
    Exhaust Valves Included
    Yes
    Guideplates Included
    Yes
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Port Shape
    Rectangular
    Intake Runner Volume (cc)
    300
    Intake Valve Angle
    24
    Intake Valve Diameter (in.)
    2.25
    Intake Valves Included
    Yes
    Lock Style
    10 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.88
    Number of Springs Per Valve
    Dual
    Oiling Style
    Through pushrod
    Outside Diameter of Outer Spring (in.)
    1.635
    Quantity
    Sold individually
    Retainer Material
    Titanium
    Retainers Included
    Yes
    Rocker Arm Nut Thread Size (in.)
    7/16"-20
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    Yes
    Rocker Arms Included
    No
    Steam Holes Drilled
    No
    Valve Cover Mounting Style
    Perimeter bolt
    Valve Guide Material
    Manganese bronze
    Valve Guides Included
    Yes
    Valve Seat Machine Style
    3-angle
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seal Style
    Positive stop
    Valve Stem Seals Included
    Yes
    Manufacturer's Part Number:
    77459

    Cast Aluminum Cylinder Heads Developed for Competition

    Made in the USA, 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.

    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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