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Chevrolet Performance 12675871

Chevrolet Performance LS-Series LS3 Cylinder Head, Assembled

809-12675871

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$697.26
Chevrolet Performance LS-Series LS3 Cylinder Head, Assembled $697.26
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LS-Series LS3 Cylinder Head
  • Assembled
  • Sold Individually
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    Chevrolet Performance 12675871 Details

    LS3 Aluminum Cylinder Heads

    Specifications:

    Shipping Weight:
    25.85
    Package Height:
    24
    Package Depth:
    10.5
    Package Width:
    12.5

    The LS3 Aluminum Cylinder Heads are stock replacement LS3/L92 heads manufactured from aluminum alloy and are available as bare castings to add your own components or fully assembled with intake and exhaust valves, valve stem seals, spring retainers, valve springs and valve locks. These heads can be used to replace worn or damaged units on your LS3 engine or as a performance upgrade on any LS engine with a 4" or larger bore!

    Features:
  • Manufactured from 319-T5 aluminum alloy
  • As-cast L92 style 260cc intake ports
  • 2.165" hollow stem intake valves
  • 1.59" solid stem exhaust valves
  • 15 degree valve angle
  • .550" max valve lift
  • D-shaped exhaust ports
  • As-cast 68.4cc combustion chambers
  • 14mm, 5/8" hex, 3/4" reach, taper-seat Angled spark plug
  • Bolt-down-type rocker arms
  • Center-bolt valve cover hold-downs
  • Fits any LS family engine with 4.00" bore or larger

    LS3 Cylinder Head Flow Chart
    Valve Lift Intake Flow Exhaust Flow
    .200151111
    .300208152
    .400256174
    .500294183
    .600316189

  • Easy Kits

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

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.