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Cylinder Head Kit for GM LS1, LS2 & LS6 Engines [Cathedral Port]
InfoVehicle Info Needed
JEGSPART NUMBER: 555-514055K

Cylinder Head Kit for GM LS1, LS2 & LS6 Engines [Cathedral Port]

$1,63830
3 left in stock
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Lowest PriceLowest Price Guarantee

Cathedral Intake Ports
Cylinder Head Kit
  • GM LS1, LS2 & LS6 Engines
  • Cathedral Port
  • Includes:
    • LS Cylinder Heads
    • Head Gaskets
    • Valve Cover Gaskets
    • Intake Manifold Seals
    • Head Bolt Kit

      JEGS 555-514055K GM LS1, LS2 & LS6 Cylinder Head Kit Includes:

      • (2) JEGS Cylinder Heads for GM LS1, LS2 & LS6 Engines [Cathedral Port] 555-514055
      • (2) JEGS MLS Cylinder Head Gasket for GM LS Engines 555-210840
      • (1) JEGS Head Bolt Kit for 2004-2014 GM LS Engines 555-83408
      • (1) JEGS Valve Cover Gaskets for GM LS Engines 555-210870
      • (1) JEGS Intake Seals for GM LS1/LS2/LS6 555-210800

      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.

      CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

      • Fully Assembled to Upgrade Your LS

      JEGS LS Aluminum Cylinder Heads are the perfect replacement or upgrade for your LS-based engine. Starting with a new aluminum casting these heads are fully assembled with all new components including intake valves, exhaust valves, valve springs, retainers, guides, and seats. They are available in cathedral port and rectangular port designs to match your GM LS Engine needs.

    Part TypeCylinder Head
    Product LineJEGS GM LS Aluminum Cylinder Heads
    BrandJEGS
    Part CategoryReplacement Parts
    Cylinder Head MaterialAluminum
    Intake Port LocationStandard
    Exhaust Valves IncludedYes
    Locks IncludedYes
    Engine Make/SizeGM LS1/LS6
    Retainers IncludedYes
    Intake Port ShapeCathedral
    Guideplates IncludedNo
    Rocker Arms IncludedNo
    Oiling StyleThrough pushrod
    Rocker Arm Nuts IncludedNo
    Cylinder Head FinishNatural
    Valve Seats MachinedYes
    Valve Seat MaterialSteel
    Heat CrossoverNo
    Number Of Springs Per ValveSingle
    Valve Springs IncludedYes
    Spark Plug StyleAngled
    Exhaust Port ShapeD-Port
    Damper Spring IncludedNo
    Valve Guides IncludedYes
    Cnc-Machined Intake RunnerNo
    Intake Valves IncludedYes
    QuantitySold as a kit
    Cylinder Head TypeCathedral Port
    Valve Stem Seals IncludedYes
    Intake Valve Diameter2 in (50.8 mm)
    Accessory Bolt Holes DrilledYes
    Exhaust Port LocationStandard
    Valve Guide MaterialPowdered metal
    Combustion Chamber Volume (Cc)69
    Machined For O-RingNo
    Steam Holes DrilledNo
    Rocker Arm Studs IncludedNo
    Cylinder Head StyleAssembled
    Valve Stem Diameter0.313 in (8 mm)
    Part FitmentDirect Fit
    Valve Cover Mounting StyleCenterbolt
    Valve Stem Seal StylePositive stop
    Retainer MaterialSteel
    Intake Runner Volume (Cc)211
    Cnc-Machined Exhaust RunnerNo
    Cnc-Machined Combustion ChamberNo
    Exhaust Valve Diameter1.57 in (39.878 mm)
    Package Qty1
    Package TypeEA

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    Some parts are not legal for use in California or other states with similar laws / regulations
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