Victor Jr. 24° - 300cc Cylinder Heads For B/B Chevy


Victor Jr. 24° - 300cc Cylinder Heads For B/B Chevy by Edelbrock
 
  • Cylinder Head Specifications:
  • Combustion chamber volume: 106cc / 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: 1.550" / 1.635"
  • Valve spring maximum lift: .700" / .880"
  • Rocker stud: 7/16"
  • Guideplate: Hardended steel
  • Pushrod diameter: 3/8"
  • Valve angle: 24°
  • Exhaust port location: Raised .534"
  • Spark plug fitment: 14mm x 3/4 reach, gasket seat
 
These heads feature an extra thick deck and extra material in the spring pockets for a heavy-duty casting that can be used with high-lift cam and heavy spring combinations. Edelbrock equips the complete heads with your choice of spring packages to suit hydraulic or mechanical roller cams. Choose a hydraulic spring package for flat tappet or hydraulic roller cams up to .700" lift. Mechanical roller cam spec heads include Manley dual-spring valve springs and titanium retainers good for up to .880" lift. The 300cc rectangle ports produce impressive flow and great power on competition big-blocks up to 510 c.i.d. with 4.310" or larger bore. Exhaust port exits are raised .534" to greatly improve exhaust flow and power.
  Bare (Single) Complete (Single)
Application Dyno Emissions Satin Satin
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS
Victor Jr. 24° Rectangular Port (106cc) - - 77485
Victor Jr. 24° Rectangular Port (118cc) - 77469 77475
 
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS
Victor Jr. 24° Rectangular Port (106cc) - - 77489
Victor Jr. 24° Rectangular Port (118cc) - 77469 77479
 
EQUIPPED WITH SPRINGS FOR USE IN MECHANICAL ROLLER CAMSHAFT APPLICATIONS
Victor Jr. 24° Rectangular Port (118cc) - 77469 77459
Matching stud girdle for Victor Jr. 24° with adjustable nuts (pair) - - 7797 -
Edelbrock Installation Note INSTALLATION NOTE: Matching stud girdle #7797 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).
#77489 | #77485 | #77479 | #77475: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 72 140 213 273 318 342 346
Exhaust 64 122 167 199 223 240 251
Edelbrock Tech Note TECH NOTE: Please view Cylinder Head Flow Data and Valve Springs & Retainers for all Edelbrock Performance Aluminum Cylinder Heads.
Edelbrock Tech Note PRODUCT EMISSIONS GUIDE
The following guide is designed to help you determine which Edelbrock components are legal for use on your vehicle. Learn more about Edelbrock Product Emissions Guide.

    50-State Legal
    For Racing Use ONLY
    For Use on Pre-Pollution Controlled Vehicles (PPCV)
    Stock Replacement Part
    Engine Swaps