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Pair 1969-1974 Cadillac 472/500 High Compression Cylinder Heads 14979022 cylinder heads in this listingShot Blasted,Hot Tanked,Magnafluxed for Cracks(No Cracks)Installed spring height set @ 1.900Resurfaced decksResurfaced exhaust side of headsNEW Intake ValvesNEW Exhaust ValvesNEW Valve SpringsNEW LocksNEW Expansion PlugsValve Tip length set for non-adjustable Rockers(2.030-2.060)Chased all bolt holesValve JobAll guide & seat work finishedFast Same Day ShippingGuide tops Machined for Valve SealsValve stem seals installed
Ultimate Duty 11/32 .500 Posi-Stop Valve Stem Seals The Best Seal Made, Period! Howards Premium PC type seals are made of a space age material which is tolerant to pump gas, alcohol, and nitromethane. Temperature tolerant to 350 degrees. They are self-lubricating and offer controlled radial tension during changes in operating temperatures. Color Coded. Controls oil while lubricating the valve guide.
