Performer Centerbolt Cylinder Heads For S/B Chevy & Corvette


Performer Centerbolt Cylinder Heads For S/B Chevy & Corvette by Edelbrock
 
  • Cylinder Head Specifications:
  • Combustion chamber volume: 60cc
  • Intake runner volume: 165cc
  • Exhaust runner volume: 65cc
  • Intake valve diameter: 2.02"
  • Exhaust valve diameter: 1.60"
  • Valve stem diameter: 11/32"
  • Valve guides: Maganese Bronze
  • Deck thickness: 5/8"
  • Valve spring diameter: 1.46"
  • Valve spring maximum lift: .575"
  • Rocker stud: 3/8"
  • Guideplate: Hardened steel
  • Pushrod diameter: 5/16"
  • Valve angle: 23°
  • Exhaust port location: Stock
  • Spark plug fitment: 14mm x .750 reach, tapered seat
 
The Small-block Chevy cylinder head is designed for 1987-95 Throttle Body Injected (T.B.I.) and Tuned Port Injected (T.P.I.) 5.7L S/B Chevy engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1987-95, 73° angle on the two center bolts. Will maintain stock compression ratio when used with the recommended head gasket.

The Corvette centerbolt cylinder head is designed for 1986-91 Tuned Port Injected (T.P.I) 5.7L small-block Chevy Corvette engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1986-91 (straight) 90° angle on all bolts. Spark plugs are angled like stock O.E. heads

  Bare (Single) Complete (Single)
Application Dyno Emissions Satin Satin
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS
Performer Centerbolt (1987-95) - 60849 60859
Performer Centerbolt (1986-91 5.7L Corvette) - 60869 60879
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 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.
#60859 | #60879: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 64 122 177 217 229 232 -
Exhaust 54 96 124 147 166 175 -
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