Ultimate Rpm Big-block Chevy Retangular Port Cylinder Head Flat Tappet Cam Best Choice [yv6lBc5C]

• Equipped with springs for use in flat tappet camshaft applications
  
• Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat
• All Performer and Performer RPM Big-Block Chevy heads: Spark plug is closer to center of bore, will interfere with high-dome pistons for open chamber heads.
• Use pistons designed for our heads. Match with Edelbrock head gasket sets.
• Designed for street/high-performance big-blocks operating from 2500-7000 rpm
• Specially designed ports for increased flow and velocity over standard big-block cylinder heads
• Highly-efficient 118cc open-style combustion chamber
• High-velocity 315cc long/300cc short intake ports
• Smaller-than-stock 11/32" valve stems promote excellent flow and lighter valve weight

Specs:

• Camshaft Type: Flat Tappet
• Horsepower: 525-650 HP
• Seat Angle: Exhaust 45 deg/Intake 45 deg
• Intake Valve Diameter: 2.19 in
• Intake Runner Volume: 315 cc
• Material: Aluminum
• Push Rod Diameter: (Suggested) 0.4375 in
• Rocker Stud Diameter: 0.4375 in
• Valve Angle: 26 deg
• Valve Spring Diameter: 1.55 in
• Valve Spring Maximum Lift: 0.700 in
• Valve Stem Diameter: 0.3438 in