Aluminum Assembled Cylinder Head - GM LS Compatible - 259cc

Aluminum Assembled Cylinder Head - GM LS Compatible - 259cc

SKU: PS8015

Aluminum Assembled Cylinder Head - GM LS Compatible - 259cc

SKU: PS8015
Regular price $1,199.00
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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, 70cc combustion chambers, and 2.165" intake/1.600" exhaust valves. They're fully assembled with valve springs, retainers, locks, guide plates, 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): 259cc
  • Intake Port Location: Standard
  • Intake Valves Included: Yes
  • Intake Valve Diameter (in): 2.165 in.


  • Runner Volume (cc): 102cc
  • Exhaust Valve Diameter (in): 1.600 in.
  • Exhaust Valves Included: Yes
  • Exhaust Runner: No
  • Port Shape: Round
  • Exhaust Port Location: Standard

Combustion Chamber:

  • Combustion Chamber Volume (cc): 70cc
  • CNC-Machined Combustion Chamber: No

Valve Specs:

  • 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: Yes
  • Valve Guide Material: Manganese Bronze
  • Valve Seats Machined: Yes
  • Valve Seat Machine Style: 5-Angle
  • Valve Seat Material: Chrome Nickle
  • Valve Stem Seals Included: Yes
  • Valve Stem Seal Style: Viton® Fluoroelastomer


  • Valve Springs Included: Yes
  • Spring Pressure Open: 360-380 @ 1.150
  • Spring Pressure Closed: 125-135 @ 1.800
  • Outside Diameter of Outer Spring (in): 1.295 in.
  • Damper Spring Included: Yes
  • Number of Springs per Valve: Dual
  • Retainers Included: Yes
  • Retainer Material: Chromemoly Steel
  • Locks Included: Yes
  • Lock Style: 7 Degree


  • Rocker Stands Included: Yes

Rocker Arms:

  • Rocker Arm Studs Included: No
  • Rocker Arms Included: N/A
  • Rocker Arm Nut Thread Size (in): 8 x 1.25
  • Rocker Arm Nuts Included: No


  • Head Style: Assembled
  • Cylinder Head Material: Aluminum
  • Cylinder Head Finish: Natural
  • Spark Plug Style: Standard
  • Cover Mounting Style: Standard
  • Steam Holes Drilled: No
  • Oiling Style: Through Pushrod
  • Machined for O-Ring: No
  • Heat Crossover: No
  • 10mm Accessory Bolt Holes Machined On Ends Of Heads


  • Sold Individually


  • Backed by our full 12-month limited warranty!

    Yellow Exclamation Triangle WARNING: Cancer and Reproductive Harm-

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