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88958765 - CNC-Ported LS2 Cylinder Head Assembly - DISCONTINUED

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Item has been discontinued and is no longer available


88958765 CNC-Ported LS2 Cylinder Head Assembly

  • CNC-ported aluminum performance head
  • 2.00" solid stem intake, and 1.55" solid stemexhaust valves
  • .570" max valve lift
  • 250cc CNCd cathedral-port intake ports
  • 85cc CNCd D-shaped exhaust ports
  • 65cc CNCd combustion chambers
  • Upgrade the valves to LS6 hollow stem valves withP/N 17801930

Assembled with the following components:

  • 12563063 Intake Valves
  • 10166344 Valve Spring Retainers
  • 12563064 Exhaust Valves
  • 12482063 Intake Valve Stem Seals
  • 12586484 Valve Springs
  • 12482062 Exhaust Valve Stem Seals
  • 10166345 Valve Locks

Application List



  • 88958765
  • 88958765
  • Chevrolet Performance Parts
  • Item has been discontinued and is no longer available
  • New


Shipping Information

  • Item Requires Shipping
  • 25.0 lbs.
  • W8.7000” x H6.1000” x L21.5000”

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