Proflow Cylinder Heads, AirMax 360, Aluminium, Bare 120cc Chamber, Straight Plug, 360cc Intake Runner, BB Chevrolet, Pair

roflow 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 for BareCylinder Heads Material: A356.2 Aluminium Combustion Chamber: 122cc Intake Port Volume: 360cc Exhaust Port Volume: 135cc , Exhaust port lication 0.375'' raised Spark Plug Location: Angled Intake Valve Diameter: 2.300" Exhaust Valve Diameter: 1.88" Valve Stem Diameter: 11/32" Valve Spring Pocket O.D.: 1.735" Valve Guide Material: Manganese Bronze Valve Guide O.D.: .530" (.570" at base) Valve Angle: 24° Intake / 15° Exhaust Deck Thickness: .750" IMPORTANT iNFORMATION Head Gasket, Fel-Pro #1047 (Mark V and VI) Head Gasket,, Fel-Pro #1017-1 (Mark IV) Head Bolts, ARP 135-3703 (Mark IV) Head Bolts, ARP 135-3707 (Mark V) Head Studs, ARP 235-4713