Performer Cylinder Heads For S/B Chevy ('86 & Earlier)


Performer Cylinder Heads For S/B Chevy ('86 & Earlier) by Edelbrock
 
  • Cylinder Head Specifications:
  • Combustion chamber volume: 64cc / 70cc
  • Intake runner volume: 185cc
  • 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
 
These Performer cylinder heads are designed for 302, 327, 350 and 400 cid small-block Chevy engines up to 1986. These cylinder heads include your choice of 64cc (In order to retain stock compression ratio on 1970 and earlier small-blocks) or 70cc combustion chambers and high flow intake and exhaust ports. Complete heads include larger-than-stock 1.46" valve springs to handle most high-lift cams. These heads retain the stock intake port location for compatibility with standard manifolds and headers. Heat crossover is machined for 50-state emissions legal performance.
  Bare (Single) Complete (Single)
Application Dyno Emissions Satin Satin
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS
Performer (70cc) - 60659 60759
Performer (64cc) - - 60909
Edelbrock Installation Note INSTALLATION NOTE: Match with Edelbrock head gasket sets on pages 126-128. When using hot air choke Q-Jet carbs and Performer manifold with above heads, choke kit #1932 is required. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
#60759: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 63 124 181 227 253 253 -
Exhaust 51 94 128 146 157 163 -
#60909: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 63 126 180 227 250 249 -
Exhaust 51 97 129 148 158 165 -
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