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PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

Racing Flag

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

LS-SERIES INTAKE VALVES

12617533

  • Valve Size: 2.165"
  • Stem Size: 8 mm
  • Stock replacement valve used in L92 engines

12605223

  • Valve Size: 2.165"
  • Stem Size: 8 mm
  • Stock replacement solid-stem valve used in LSA engines

12569427

  • Valve Size: 2.165"
  • Stem Size: 8 mm
  • Stock replacement hollow-stem valve used in LS3 engines

12605524

  • Valve Size: 2.165"
  • Stem Size: 8 mm
  • Stock replacement titanium valve used in LS9 engines

12591644

  • Valve Size: 2.200"
  • Stem Size: 8 mm
  • Stock replacement titanium valve used in LS7 engines

LS-SERIES EXHAUST VALVES


12563064

  • Valve Size: 1.500"
  • Stem Size: 8 mm
  • Stock replacement solid-stem valve used in LS2 engines

12582719

  • Valve Size: 1.590"
  • Stem Size: 8 mm
  • Stock replacement solid-stem valve used in L92 and LS3 engines

12605525

  • Valve Size: 1.590"
  • Stem Size: 8 mm
  • Stock replacement sodium-filled stem valve used in LS9 engines

12618110

  • Valve Size: 1.610"
  • Stem Size: 8 mm
  • Stock replacement sodium-filled stem valve used in LS7 engines

LS-SERIES VALVE SPRINGS AND SPRING KITS


12499224

LS VALVE SPRING KIT

  • Beehive-style springs
  • Used on LS3, LS2/LS6 cylinder heads
  • Installed height: 1.800" @ 90 lbs. pressure
  • 1.250" @ 295 lbs. pressure
  • Max lift: .550"
  • Includes 16 of P/N 12625033

12625033

VALVE SPRINGS

  • Beehive-style springs
  • Standard LS6/LS3 springs
  • Use cap P/N 10166344
  • Installed height: 1.800" @ 90 lbs. pressure
  • 1.250" @ 295 lbs. pressure
  • Max lift: .550"

12589774

VALVE SPRINGS

  • Beehive-style springs
  • Standard L76/L92 springs
  • Installed height: 1.800" @ 90 lbs. pressure
  • 1.300" @ 264 lbs. pressure
  • Max lift: .520"

12621428

VALVE SPRINGS

  • Beehive-style springs
  • Used on LS7 cylinder heads
  • Installed height: 1.960" @ 101 lbs. pressure
  • 1.368" @ 310 lbs. pressure
  • Max lift: .600"

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.