Performer & RPM High-Compression 454-O Heads For B/B Chevy


Performer & Performer RPM 454-O High-Compression Cylinder Heads For B/B Chevy by Edelbrock
 
  • Cylinder Head Specifications:
  • Combustion chamber volume: 100cc
  • Intake runner volume: 290cc
  • Exhaust runner volume: 110cc
  • Intake valve diameter: 2.19"
  • Exhaust valve diameter: 1.88"
  • Valve stem diameter: 11/32"
  • Valve guides: Manganese bronze
  • Deck thickness: 9/16"
  • Valve spring diameter: 1.55"
  • 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
 
    PERFORMER & PERFORMER RPM HIGH-COMPRESSION 454 B/B CHEVY (OVAL PORT) FEATURES:
  • 100cc semi-open chamber heads feature a 1-1/2 rolled over (angle milled) design that improves intake port alignment and provides a smaller combustion chamber without shrouding the valves
  • 9.2:1 compression with flat-top pistons for an outstanding high performance street head
  • 8.8:1 compression ratio when used on 1987-95 TBI-equipped 7.4L dished piston engines
  • Performer applications include heat crossover passage for emissions related engines
  • Performer 454-O are 50-state street legal
  Bare (Single) Complete (Single)
Application Dyno Emissions Satin Satin
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS
Performer RPM High Compression 454-O - 60429 60435
 
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS
Performer High Compression 454-O - 60489 60499
Performer RPM High Compression 454-O - 60429 60439
Edelbrock Installation Note INSTALLATION NOTE: Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing & a valve job to match the valves you will be using. Recommended spark plugs 14mm x 3/4" reach with flat gasket seat (Champion RC12YC).
#60499: 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.
Edelbrock Tech Note PRODUCT EMISSIONS GUIDE
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