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Get big power on a small budget with BluePrint Muscle Series LS cylinder heads! These lightweight aluminum heads bolt up to your LS engine and feature 259cc intake/102cc exhaust runners, 72cc combustion chambers, and 2.165" intake/1.600" exhaust valves. They're fully assembled with valve springs, retainers, locks, guideplates, studs, and seals.
■ Maximum output for less money!■ Designed and produced by BluePrint Engines■ Fully assembled with heavy duty components■ Backed by our full 12-month limited warranty
Intake Runner Volume (cc): 259ccIntake Port Location: StandardIntake Valves Included: YesIntake Valve Diameter (in): 2.165 in.CNC Machined Intake Runner: No
CFM Port Flow Average @ 28" .100" - 88 .200" - 148 .300" - 197 .400" - 239 .500" - 273 .600" - 302
Runner Volume (cc): 125ccExhaust Valve Diameter (in): 1.600 in.Exhaust Valves Included: YesCNC Machined Exhaust Runner: NoPort Shape: RoundExhaust Port Location: Standard
CFM Port Flow Average @ 28" .100" - 59 .200" - 111 .300" - 152 .400" - 189 .500" - 214 .600" - 231
Combustion Chamber Volume (cc): 72ccCNC-Machined Combustion Chamber: No
Maximum Valve Lift (in): .650 in.Intake Valve Angle: 12 Degrees (3 degrees rolled)Exhaust Valve Angle: 12 Degrees (3 degrees rolled)Valve Guides Included: YesValve Guide Material: Manganese BronzeValve Seats Machined: YesValve Seat Machine Style: 5-AngleValve Seat Material: Chrome NickleValve Stem Seals Included: YesValve Stem Seal Style: Viton® Fluoroelastomer
Valve Springs Included: YesSpring Pressure Open: 360-380 @ 1.150Spring Pressure Closed: 125-135 @ 1.800Outside Diameter of Outer Spring (in): 1.295 in.Damper Spring Included: YesNumber of Springs per Valve: DualRetainers Included: YesRetainer Material: Chromemoly SteelLocks Included: YesLock Style: 7 Degree
Guide Plates Included: YesGuide Plate Pushrod Size (in): N/A
Rocker Arm Studs Included: NoRocker Arm Stud Size (in):Rocker Arms Included: N/ARocker Arm Nuts Included: No
Head Style: Assembled
Cylinder Head Material: AluminumCylinder Head Finish: Natural
Spark Plug Style: StandardCover Mounting Style: StandardAccessory Bolt Holes Drilled: YesSteam Holes Drilled: NoOiling Style: Through PushrodMachined for O-Ring: NoHeat Crossover: No
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