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JEGS Big Block Chevy Cylinder Heads

JEGS Performance Products
JEGS Big Block Chevy Cylinder Heads

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Racing technology for your high performance street engine! Our heads are cast from Virgin A356 Aluminum and heat treated to a T6 Hardness for the ultimate quality and durability. They are then machined on the latest CNC machines for accuracy and precision. We use the most up to date technology to design our intake and exhaust runners and combustion chambers for maximum performance. Our choices of intake runner volumes, combustion chamber sizes, spark plug styles and valve spring sizes insure that we have a cylinder head to suit your needs. Our cylinder heads are assembled with premium parts such as manganese valve guides, stainless steel valves and chrome-moly retainers. They feature valve seats that are compatible with unleaded fuel.

  • Cast in the U.S.A.
  • Machined in the U.S.A.
  • Assembled in the U.S.A.
  • 3-Angle Competition Valve Job
  • Improved Combustion Chamber Design For Improved Efficiencies
  • Latest In Port Design For Both The Intake and Exhaust For Increased Horsepower and Torque
  • Exhaust Ports Raised .300"
  • Premium parts and hardware
  • Up to 20 lbs. lighter per head than standard cast iron heads

  • 1 Product
    290cc Intake Runner

    *Blem - Cylinder Head
  • Big Block Chevy
  • 290cc Intake Ports
  • 119cc CNC Ported Combustion Chambers
  • 2.250" Int./1.880" Exh. Valves
  • 1.550" Valve Spring, 0.650" Max Lift
  • 7/16" Rocker Studs
  • Assembled, Sold Individually
  • Installation Instructions for JEGS Performance Products #514060 Blemished
    Was: $1,004.99
    Now: $716.99

    1 Product