Speedmaster PCE281.2091 Compatible with Chevy GM LS3 L92 L76 250cc 64cc Hydraulic Roller Assembled Cylinder Heads

Brand:SpeedmasterPart Number:PCE281.2091Part Type:Cylinder Head [Assembled]Product Line:Hydraulic Roller TappetCylinder Head Style:AssembledCylinder Head Material:AluminumCylinder Head Finish:NaturalCombustion Chamber Volume (cc):64 ccCNC-Machined Combustion Chamber:NoIntake Runner Volume (cc):250 ccExhaust Runner Volume (cc):n/aCNC-Machined Intake Runner:NoCNC-Machined Exhaust Runner:NoIntake Port Shape:RectangularIntake Port Location:StandardExhaust Port Shape:OvalExhaust Port Location:StandardSpark Plug Style:OEMComp. Valve Job:NoIntake Valves Included:YesIntake Valve Diameter (in):2.165 in.Exhaust Valves Included:YesExhaust Valve Diameter (in):1.600 in.Valve Springs Included:YesMaximum Valve Lift (in):0.625 in.Outside Diameter of Outer Spring (in):1.290 in.Damper Spring Included:YesNumber of Springs Per Valve:DualRetainers Included:YesRetainer Material:Chromoly steelLocks Included:YesLock Style:7 degreeValve Stem Seals Included:YesValve Stem Seal Style:Positive stopRocker Arm Studs Included:N/ARocker Arms Included:NoRocker Arm Nuts Included:NoGuideplates Included:N/AValve Cover Mounting Style:Perimeter BoltAccessory Bolt Holes Drilled:YesIntake Valve Angle:15 deg.Exhaust Valve Angle:15 deg.Valve Guides Included:YesValve Guide Material:SteelValve Seats Machined:YesValve Seat Machine Style:3-angleValve Seat Material:Ductile ironSteam Holes Drilled:N/AOiling Style:Through pushrodMachined for O-Ring:NoHeat Crossover:NoQuantity:Sold as a pair.

• Included components as shown in product images
• Speedmaster creates unique and distinctive DNA items inspired by the blend of old and new technology. Its empowered work forced drives innovation not only in the products it sells but with the way it goes about doing it.
• TRACK PROVEN - Surviving the longevity of road, race and recreation is mandatory for all Track Proven products, Bringing you closer to product perfection.
• 12-Month Limited Worldwide Warranty