Every E-Street is assembled with manganese bronze valve guides, powder metal interlocking valve seats, stainless steel one-piece valves with hardened tips, 1.25" diameter valve springs, 3/8" screw-in studs and guide plates. Additional qualities include hardened spring cups for long-term wear protection and Heli-coil® threaded inserts in the rocker stud bosses for increased strength; these are the details that most low-cost competitors leave out of their heads. All E-Street cylinder heads are sold in pairs and Made in the USA.

• Made in the USA
• Entry level street performance upgrade
• A356 aluminum treated to T-6 spec
• Larger than stock intake and exhaust ports for increased power
• Modern combustion chamber design for improved efficiency and mileage potential
• Heli-coil threaded inserts in the rocker stud bosses for proper torque load without damaging threads
• Hardened spring cups between the valve springs and casting for wear protection
• Available for Small-Block Chevy and Small-Block Ford - sold in pairs
• Edelbrock quality and performance at an AFFORDABLE PRICE - see your local dealer today