Performer RPM Cylinder Heads For Chevy 348/409


Performer RPM Cylinder Heads For Chevy 348/409 by Edelbrock
 
  • Cylinder Head Specifications:
  • Combustion chamber volume: 16cc
  • Intake runner volume: 215cc
  • Exhaust runner volume: 115cc
  • Intake valve diameter: 2.19"
  • Exhaust valve diameter: 1.72"
  • Valve stem diameter: 11/32"
  • Valve guides: Manganese bronze
  • Deck thickness: 9/16"
  • Valve spring diameter: 1.55"
  • Valve spring maximum lift: .600"
  • Rocker stud: 7/16"
  • Guideplate: Hardended steel
  • Pushrod diameter: 3/8"
  • Valve angle:
  • Exhaust port location: Stock
  • Spark plug fitment: 14mm x 3/4 reach, gasket seat
 
    PERFORMER RPM 348/409 CHEVY FEATURES:
  • Designed for 1958-1965 Chevrolet "W" series 348/409 big-block engines
  • Original port locations and valve angles for bolt-on convenience
  • CNC port matched 220cc intake and 115cc exhaust ports for optimum flow and power
  • Improved port design for more performance
  • Hardened spring cups, screw-in rocker studs and hardened guideplates
  • 1958 348 c.i.d. applications will require modifications to cylinder head (contact Edelbrock tech department for detailed information)
  Bare (Single) Complete (Single)
Application Dyno Emissions Satin Satin
EQUIPPED WITH SPRINGS FOR USE IN MECHANICAL FLAT TAPPET AND HYDRAULIC ROLLER CAMSHAFT APPS.
Performer RPM 348/409 - 60809 60815
 
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS
Performer RPM 348/409 - 60809 60819
Edelbrock Installation Note INSTALLATION NOTE: Use Edelbrock head gasket sets. May be used on 348 engines with valve lifts up to .550" only. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. These heads will only fit 1958-65 348 c.i.d. "W" engines if an Edelbrock #5409, #7159 or stock large port 409 c.i.d. manifold is used. Proper cylinder wall notching must be checked to ensure exhaust valve to cylinder clearance. Deck thickness: 9/16", rocker stud diameter: 7/16", pushrod diameter: 3/8" (width of slot in guide plate).
#60819: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 67 148 221 256 266 273 277
Exhaust 60 118 157 184 204 216 221
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