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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
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JEGS has discounted auto parts and top brands like Edelbrock, Magnaflow, Flowmaster, Comp Cams, K&N,Holley, MSD Ignition, Moroso and more. We stock auto parts and truck accessories, like carburetors, tires & wheels, exhaust parts, crate engines, headers and cold air intakes.
Find out why JEGS is the customer service leader!
Over 50 years of experience delivering the best high performance auto parts brands. JEGS has an experienced technical support staff along with 100% satisfaction guarantee. Our warehouse is filled with millions of name brand parts ready for same day shipping.
What You Want - When You Want It - At the Price You Want to Pay