BBC Big Block Chevy 290cc Oval Port Cylinder Heads 396 454 Assembled Complete Flat Tappet

The Edelbrock 60459 Big Block Chevy, 290cc Oval Port, Aluminium Performance Cylinder Heads.

Assembled to suit Hydraulic Flat Tappet Camshafts - Sold as a Single Complete Cylinder Head. 

*Sold individually*

Edelbrock Performer RPM O-Port cylinder heads are designed for BB Chevy engines. The Edelbrock 60459 Performer RPM heads are perfect for street performance, daily drivers and muscle cars where more performance is needed.

Combustion Chamber Volume (cc):    110

Intake Runner Volume (cc):  290cc

Exhaust Runner Volume (cc):  110cc

Cylinder Head Style:   Assembled

Cylinder Head Material:  Aluminum

Intake Port Shape:   Oval

Intake Valve Diameter (in.):   2.190 in.

Intake Port Location:   Standard

Exhaust Port Shape:   Square

Exhaust Port Location:   Standard

Exhaust Valve Diameter (in.):  1.880 in.

Maximum Valve Lift (in.):  0.700 in.

Camshaft Style:  Hydraulic flat tappet

Outside Diameter of Outer Spring (in.):  1.500 in.

Number of Springs Per Valve:  Dual Valve Springs

Lock Style:  7 degree

Valve Stem Seal Style:  Positive stop

Rocker Arm Studs Included:  Yes

Rocker Arm Studs Thread Size:  7/16 in.-20

Guide plate Pushrod Size:  3/8 in.

Valve Cover Mounting Style:  Perimeter bolt

Accessory Bolt Holes Drilled:  Yes

Intake Valve Angle:  26

Valve Guide Material:  Manganese bronze

Valve Seat Machine Style:   3-angle

Valve Seat Material:  Ductile iron

Quantity:  Sold individually.

Notes:

For Hydraulic flat tappet camshafts. If using a domed piston check clearance before final assembly, spark plug location has been moved .150 closer to bore centre, with a semi-open chamber design.