Edelbrock E-205 Cylinder Head 289/302/351W

Cylinder Head Style:Assembled Cylinder Head Material:Aluminum Cylinder Head Finish:Natural Combustion Chamber Volume (cc):60 CNC-Machined Combustion Chamber:No Intake Runner Volume (cc):205cc Exhaust Runner Volume (cc):62cc CNC-Machined Intake Runner:No CNC-Machined Exhaust Runner:No Intake Port Shape:Rectangular Intake Port Location:Standard Exhaust Port Shape:Square Exhaust Port Location:Standard Spark Plug Style:Straight Intake Valves Included:Yes Intake Valve Diameter (in):2.080 in. Exhaust Valves Included:Yes Exhaust Valve Diameter (in):1.600 in. Valve Springs Included:Yes Maximum Valve Lift (in):0.650 in. Outside Diameter of Outer Spring (in):1.540 in. Damper Spring Included:No Number of Springs Per Valve:Single Retainers Included:Yes Retainer Material:Steel Locks Included:Yes Lock Style:7 degree Valve Stem Seals Included:Yes Valve Stem Seal Style:Positive stop Rocker Arm Studs Included:Yes Rocker Arm Nut Thread Size:3/8-24 in. Rocker Arms Included:No Rocker Arm Nuts Included:No Guideplates Included:Yes Guideplate Pushrod Size:5/16 in. Valve Cover Mounting Style:Perimeter bolt Accessory Bolt Holes Drilled:Yes Intake Valve Angle:20 Exhaust Valve Angle:20 Valve Guides Included:Yes Valve Guide Material:Manganese bronze Valve Seats Machined:Yes Valve Seat Machine Style:3-angle Valve Seat Material:Powdered metal Steam Holes Drilled:No Oiling Style:Through pushrod Machined for O-Ring:No Heat Crossover:No Quantity:Sold as a pair. Notes:Hardened pushrods required. Will not accept rail rockers. Equipped with springs for mechanical flat tappet and hydraulic roller camshafts only.