Cylinder Head Specifications

• Cylinder Head Bolt Style: LS-style (5 Bolt Per Cylinder)
• Intake Port Volume: 259cc (Standard Location)
• Exhaust Port Volume: 102cc Round (Standard location)
• Combustion Chamber Volume: 72cc
• Valves: 2.165' dia. Intake / 1.600' dia. Exhaust
• Valve Springs: 1.295' Diameter - Open Pressure: 360-380 lbs. @ 1.150'; Closed Pressure: 125-135 lbs. @ 1.800'; Installed Height: 1.810'; Max Lift: .650'
• Spring Retainers: 7° Steel
• Valve Seals: Viton
• Valve Angle: 12° (3° rolled)
• Valve Guides: Manganese Bronze
• Intake Manifold: LS3 or Equivalent
• Valve Centerline: Standard
• Steam Holes: NOT Drilled
• Heat Crossover: No
• Machined for O-Ring: No
• Accessory Bolt Holes are Drilled
• Standard LS Engine Valve Cover Bolt Pattern

   

  Kit Includes:
• 2 Blueprint Engines LS Cylinder Heads (Part # 138-PS8015)
• 2 Chevrolet Performance Head Gaskets (Part # 809-12622033)
• 2 Chevrolet Performance Head Bolt Sets (Part # 809-17800568)
• 1 Fel-Pro Valve Cover Gasket Set (Part # 375-VS50504R)
• 1 JEGS Intake Gasket Set (Part # 555-210801)
• 1 Mr Gasket Exhaust Gasket Set (Part # 720-5966)

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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