E-CNC 325 Oval Port Cylinder Heads For B/B Chevy


E-CNC 325 Oval Port Cylinder Heads For B/B Chevy by Edelbrock
 
  • Cylinder Head Specifications:
  • Combustion chamber volume: 112cc
  • Intake runner volume: 308cc (lh) / 325cc (rh)
  • Exhaust runner volume: 133cc
  • Intake valve diameter: 2.25"
  • 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: N/A
  • Pushrod diameter: 3/8"
  • Valve angle: 25°
  • Exhaust port location: +.125"
  • Spark plug fitment: 14mm x 3/4 reach, gasket seat
 
    E-CNC 325 FOR B/B CHEVY (OVAL PORT) FEATURES:
  • Features 24.5° x 4.4° intake valve angle, 15.5° x 4.2° exhaust valve angle
  • Stock exhaust port locations and spark plug angles have been modified to produce a smooth flame front for increased fuel efficiency and maximum power
  • Heads are equipped with high-quality valve springs for valve lifts of up to .700
  • Full CNC porting of the combustion chambers as well as the intake and exhaust runners; this improves air-flow and overall performance potential
  Bare (Single) Complete (Single)
Application Dyno Emissions Satin Satin
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC ROLLER CAMSHAFT APPLICATIONS
E-CNC 325 Oval Port - 79449 79455
 
EQUIPPED WITH SPRINGS FOR USE IN HYDRAULIC FLAT TAPPET CAMSHAFT APPLICATIONS
E-CNC 325 Oval Port - 79449 79459
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.
#79459 | #79455: Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 74 150 227 279 317 337 344
Exhaust 69 130 172 197 210 221 230
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