The Edelbrock part # 77589 Small Block Chevy Victor Jr. 215cc cylinder head is an affordable version that will still allow for maximum power when used in competition and ultra high-performance street applications. This cylinder head has the potential of 530-580 hp out-of-the-box, for a cost effective, race-winning set-up. These cylinder heads feature angled spark plug holes and accept standard 23° valvetrain hardware. The 77589 cylinder heads have a 64cc combustion chamber and come with springs for hydraulic roller camshafts. The 64cc chambers yield about 12.5:1 compression with a 12cc domed piston in a 350 V8.
Check cam manufacturer's specs for compatibility with valve springs for spring rates. Match with Edelbrock head gasket sets. Use Head Bolt Kits for easy installation. These heads require the use of a 14mm x 3/4" reach, flat gasket spark plug with a heat range appropriate to your application. Deck thickness: 9/16", rocker stud diameter: 3/8", pushrod diameter: 7/16" (width of slot in guide plate).
CNC Ported No
Combustion Chamber Volume 64.0 cc
Deck Height 9.025 in
Deck Thickness 0.562 in
Exhaust Valve Diameter 1.600 in
Guide Plates Included Yes
Intake Runner Volume 215.0 cc
Push Rod Diameter 0.312 in
Rocker Stud Diameter 0.437 in
Valve Angle 23 deg
Valve Spring Diameter 1.550 in
Valve Spring Maximum Lift 0.650 in
Valve Stem Diameter 0.341 in