These cast-iron Vortec cylinder heads are from Chevrolet Performance are designed to fit Small Block Chevy Vortec engines. These heads come completely assembled and ready for install.
Note: Camshafts with more than 0.475" lift require machining valve guide bosses and checking valve seal to valve spring retainer clearance
California Customers: This part has been identified as emissions sensitive and can only legally be installed on race-use only vehicles, off-road-use only vehicles, or pre-1965 vehicles in the State of California in accordance with the California Air Resource Board (CARB) requirements. Once your order is placed you will be contacted by Speedway Motors within 2 business days so that you can certify that you will only use such parts on these types of vehicles in California. Specs Sold in Quantity Each Cylinder Head Style Assembled Spark Plug Style Straight Material Type Cast Iron Combustion Chamber Volume 64cc Intake Port Location Standard Exhaust Port Shape Square Exhaust Port Location Standard Number of Springs Per Valve Single Retainer Material Steel Lock Style 7 Degree Valve Stem Seal Type Umbrella Oiling Style Through Pushrod CNC-Machined Combustion Chamber No Intake Valves Included Yes Valve Spring Included Yes Retainers Included Yes Locks Included Yes Rocker Arm Studs Included Yes Rocker Arm Nuts Included No Accessory Bolt Holes Drilled Yes Valve Seats Machined Yes Steam Holes Drilled No Machined for O-Ring No Heat Crossover No Valve Guides Included Yes Valve Stem Seals Included Yes Exhaust Valve Diameter 1.500 Exhaust Valves Included Yes Rocker Arms Included No Intake Runner Volume Range 170cc - 179cc Combustion Chamber Volume Range 60cc - 69cc Intake Runner Volume 170cc CNC-Machined Runners No MFG. Part # 12558060 Maximum Lift 0.475 Spring Diameter 1.250 ShippingCombined Shipping:
Freight Shipping: