1 PR. SMALL-BLOCK CHEVY E-STREET CYLINDER HEAD 70CC PAIR

Brand New Edelbrock E-Street Cylinder Head 70cc Pair Fits 1955-1986 Small Block Chevy Engines (Part #5073).

The Edelbrock E-Street cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. The modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports move more air through your engine for improve efficiency. For use on pre-pollution controlled vehicles only.

Installation Notes:

• Designed for use with hydraulic flat tappet camshafts only, not compatible with hydraulic roller camshafts
• Use with Hydraulic Flat Tappet Camshafts .550" max lift. (NOT Compatible with Hydraulic Roller Camshafts)
• Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
• Requires hardened pushrods.
  
• Dyno tests showed a gain of 16 hp and 11 ft-lbs of torque over our overseas competitor

Specs:

• Series: E-Street
  
• Material: Aluminum
  
• Horsepower: 300-400 HP
  
• Seat Angle: Exhaust 45 deg/Intake 45 deg
• Intake Valve Diameter: 2.02 in
  
• Intake Runner Volume: 185 cc
  
• Push Rod Diameter: 0.3125 in
  
• Valve Angle: 23 Degree
  
• Valve Spring Diameter: 1.46 in
  
• Valve Spring Maximum Lift: 0.550 in
  
• Valve Stem Diameter: 0.3438 in
  

You can view and download the complete assembly instruction booklet here.