Proflow Cylinder Heads, AirMax 180, Aluminium, Assembled, SB Chrysler/Mopar 63cc

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Proflow Cylinder Heads, AirMax 180, Aluminium, Assembled, SB Chrysler/Mopar Proflow does not sacrifice quality for a low price--you get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302, 351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB. They have phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, high performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod. Specifications Cylinder Head Material: Aluminum A356.2 T6 A356.2 T6 Combustion Chamber Volume: 63cc Intake Runner Volume: 171cc Exhaust Runner Volume: 77cc Intake Valve Diameter: 2.02'' Exhaust Valve Diameter: 1.60'' Valve Stem Diameter: 11/32'' Valve Guides: Manganese Bronze Deck Thickness: 5/8'' Valve Spring Diameter: 1.46'' Valve Spring Maximum Lift: 0.575'' Rocker Stud: N/A Guideplate: Hardened Steel Pushrod Diameter: 5/16'' Valve Angle: 18° Exhaust Port Location: Stock Spark Plug Fitment: 14mm x 3/4'' Reach, Gasket Seat