CYLINDER HEADS - Chevy - Big Block - Victor Jr. 24° Rectangle Port
Victor Jr. 24° Rectangle Port
This 24° is the latest B/B Chevy head from Edelbrock. Starting with a A356 aluminum casting — heat treated to T6 spec, they 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 choice of spring packages to suite hydraulic or mechanical roller. Choose a hydraulic spring package for flat tappet or roller cams up to .700" lift. Mechanical cam spec heads include Manley dual-spring valve springs & 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 & power. Two combustion chambers are offered to meet desired compression ratio.

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 Hardened steel
Pushrod diameter 3/8"
Valve angle 24°
Exhaust port location Raised .534"
Spark plug fitment 14mm x 3/4 reach, gasket seat
Made In USA




Technical Notes: Matching stud girdle #7797 must be used with stud mounted rocker arms. These heads require the use of a 14mm, 3/4" reach, flat gasket spark plug with a heat range appropriate to your application.
 
Victor Jr. 24° with 106cc Combustion Chamber Bare Complete
Complete with springs for hydraulic cams (up to .700" lift) N/A 77489*

Victor Jr. 24° with 118cc Combustion Chamber Bare Complete
Complete w/ springs for mechanical roller cams (up to .880" lift) 77469* 77459*
Complete with springs for hydraulic roller cams (up to .700" lift) 77469* 77479*
Matching stud girdle for Victor 24° with adjustable nuts (pair) N/A 7797

Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
#77479 | #77459
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 72 140 2130 273 318 342 346
Exhaust 64 122 167 199 223 240 251
* Not legal for sale or use on pollution controlled motor vehicles.
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