Performer RPM 454 Marine Cylinder Heads For B/B Chevy

Performer RPM 454 Marine Cylinder Heads For B/B Chevy by Edelbrock
  • Cylinder Head Specifications:
  • Combustion chamber volume: 110cc / 118cc
  • Intake runner volume: 290cc / 315cc
  • Exhaust runner volume: 110cc
  • Intake valve diameter: 2.25"
  • Exhaust valve diameter: 1.89"
  • Valve stem diameter: 11/32"
  • Valve guides: Manganese bronze
  • Deck thickness: 9/16"
  • Valve spring diameter: Hydraulic Roller (#61555)
  • Valve spring maximum lift: .700"
  • Rocker stud: 7/16"
  • Guideplate: Hardened steel
  • Pushrod diameter: 3/8"
  • Valve angle: 26°
  • Exhaust port location: Stock
  • Spark plug fitment: 14mm x 3/4 reach, gasket seat
  • Heavy-duty, 1.89" Inconel exhaust valves provide added durability for marine applications
  • Hard anodized black to protect the aluminum cylinder heads in the harsh marine environment
  • Sold with valves only to allow for valve spring choices
  • Match with an Edelbrock Performer RPM manifold, Performer Series 750 cfm marine carb and Performer RPM cam for proven performance
  • Smaller-than-stock 11/32" valve stems promote excellent flow and lighter valve weight
  • Complete head is equipped with Hydraulic Roller springs.
  Bare W/ Valves (Single) Complete (Single)
Application Dyno Emissions Satin
Performer RPM 454-O (110cc) - 61459 -
Performer RPM 454-R (118cc) - 61559 61555
Edelbrock Installation Note INSTALLATION NOTE: Match with Edelbrock head gasket sets. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Deck thickness: 9/16", rocker stud diameter: 7/16", pushrod diameter: 3/8" (width of slot in guide plate).
#61459: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 73 143 208 251 284 299 -
Exhaust 71 128 153 178 200 218 -
Edelbrock Tech Note TECH NOTE: Please view Cylinder Head Flow Data and Valve Springs & Retainers for all Edelbrock Performance Aluminum Cylinder Heads.
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