Edelbrock Performer RPM Gen III Hemi Cylinder Heads - Engine Builder Magazine

Edelbrock Performer RPM Gen III Hemi Cylinder Heads

Factory cylinder heads for Gen III Hemi engines are pretty darn good. Edelbrock’s Performer RPM Gen III Hemi Cylinder Heads are even better. The fully assembled heads feature fully CNC-machined combustion chambers, CNC-profiled bowls, and CNC-profiled port entries/exits for improved airflow—up to 337 CFM on the intake side at .700-inch of valve lift. Edelbrock says the Performer RPMs are ideal for engines making 450 to 700 horsepower. 

Other features include:
• Thicker decks and  reinforced combustion chambers to handle increased cylinder pressures
• Extra material at the intake and exhaust ports for port matching
• Reinforced rocker arm bosses for improved stability
• Intake and exhaust valve locations tipped away from cylinder walls to accommodate larger valves 
• Increased valve seat diameters for improved heat transfer and durability
• Eagle intake and exhaust port locations for use with Eagle-style and Hellcat factory manifolds, valve covers, rocker arms, spark plugs and accessories 

Edelbrock Performer RPM Gen III Hemi Cylinder Heads are available for 2009-22 5.7L, 6.1L, 6.2L, and 6.4L Gen III Hemi engines.

• 202cc intake/75cc exhaust runners
• 67cc (5.7L), 73cc (6.1/6.2/6.4L), or 83cc (5.7L) combustion chambers
• 2.165-inch intake/1.650-inch exhaust valves
• 1.330-inch OD dual valve springs rated to .680-inch of valve lift

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