17802818 - COPO LS7 CNC Cylinder Head Assembly

17802818
Chevrolet Performance Parts
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Pricing: $3461.94
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    This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

    Trusted Specialists GM engine & parts specialists
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    Description

    Complete GM LS7 Cylinder Head Assembly

    • 356-T6 aluminum
    • Fully CNC'd ports & chambers
    • C5R / LS7 rectangle port design - Requires intake manifold part number 25534394 or 12568976
    • Assembled with 2.20" titanium intake and 1.61" sodium filled exhaust valves
    • 12 valve angle
    • Designed for big bore blocks: LS7, C5R, LSX or Warhawk (Minimum 4.065" bore)
    • 270cc CNC'd intake ports
    • 85cc CNC'd exhaust ports
    • 70cc CNC's combustion chambers
    • All fasteners are metric
    • capable of over 600 HP
    • Bare head # 12575450 is also available

    Head contains the following components:

    12591644 intake valve

    12578455 exhaust valve

    12578457 valve spring

    10166345 valve lock

    12596508 valve spring retainer

    12482063 intake stem seals

    12482062 exhaust stem seals

    12596509 intake lash cap

    Flow Data:

    Lift.100".200".300".400".500".550".600".700"
    Intake Flow71145222271315332348352
    Exhaust Flow60120159192207214219221