Technical Specifications of...
S/R Stock Replacement Cylinder Heads

Material: High density cast iron
Valve Seats: Integral intake, hardened steel exhaust
Valve Size: 1.650" intake x 1.420" exhaust (OEM)
Valve Guide: 5/16" integral cast iron
Accessory Flange: Stock locations
Included In Assembly: OEM replacement steel valves, umbrella style valve seals, valve springs, OEM steel retainers and keepers