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E-Street Big-Block ChevyHead Cylinder Head Oval COMPLETE Single

The #50459 E-Street cylinder 290 Oval Port heads are designed for BBChevy applications. American made quality and affordable performance, These heads feature as-cast ports and are designed for entry-level application
In stock
The Edelbrock #50459 E-Street cylinder 290 Oval Port heads are designed for Big-Block 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.

• Match with Edelbrock head gasket sets.
• Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat
• Designed for entry-level street performance engines and ideal for operating in the idle to 5500 rpm range
• Includes hardened spring cups 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.
• These cylinder heads are sold separately and Made in the USA!
More Information
Manufacturer Edelbrock
Application Application Specific
UPC 00085347504596
Series E-Street
Grade Type Performance
Quantity Sold Individually
Guide Plate Material Hardened Steel
Camshaft Type Flat Tappet
Horsepower 400-500 HP
Availability Note Available to Order
Warranty 12 Months
Seat Angle Exhaust 45 deg/Intake 45 deg
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Intake Valve Diameter 2.19 in
Intake Runner Volume 290 cc
Material Aluminum
Push Rod Diameter (Suggested) 0.4375 in
Rocker Stud Diameter 0.4375 in
Valve Angle 26 deg
Valve Spring Diameter 1.50 in
Valve Spring Maximum Lift 0.700 in
Valve Stem Diameter 0.3438 in