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PARTS INTENDED FOR COMPETITION USE ONLY.
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Racing Flag

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

LSX CYLINDER HEADS

19201807

LSX-L92 SMALL-BORE CYLINDER HEAD

  • LS3/L92 Port Configuration
  • “As-cast” runners and combustion chamber
  • 15° valve angle
  • Assembled with 2.00" intake and 1.55" exhaust valves
  • 250-cc intake port and 80-cc exhaust port
  • 70-cc combustion chamber
  • Intake flow – 280 cfm @ .600" lift /
    Exhaust flow – 180 cfm @ .700" lift
  • Beehive valve springs
  • Uses LS3-/L92-style rocker arms (offset)
  • 3.890" minimum bore size
  • Uses LS3-/L92-style intake manifold

19354243

LSX-LS3 CYLINDER HEAD

  • L92-style rectangle port design
  • Assembled with 2.165" hollow-stem intake and 1.590" solid-stem exhaust valves
  • 15° valve angle; minimum 4.000" bore
  • 260-cc “as-cast” intake ports, 80-cc “as-cast” exhaust ports
  • 70-cc “as-cast” combustion chambers
  • Uses LS3 rocker arms/LS7 bolts

19354242

LSX-LS7 CNC-PORTED BARE CYLINDER HEAD

  • Fully CNC-ported
  • 6-bolt-per-cylinder bolt pattern
  • LS7-style rectangle port design
  • 12° valve angle; minimum 4.100" bore
  • 70-cc “as-cast” combustion chambers
  • Uses LS7 rocker arms/LS7 bolts
  • 397 cfm@0.700" intake, 230 cfm @ 0.700" exhaust

19354241

LSX-LS7 CNC-PORTED CYLINDER HEAD ASSEMBLY

  • Fully CNC-ported
  • 6-bolt-per-cylinder bolt pattern
  • LS7-style rectangle port design
  • Assembled with 2.200" titanium intake and 1.610" sodium-filled exhaust valves
  • 12° valve angle; minimum 4.100" bore
  • 70-cc “as-cast” combustion chambers
  • Handles .650" lift with premium springs
  • Uses LS7 rocker arms/LS7 bolts
  • Uses P/N 19257879 bare head (shown)
  • 397 cfm @ 0.700" intake, 230 cfm @ 0.700" exhaust

19354239

LSX-LS7 CYLINDER HEAD ASSEMBLY – AS CAST

  • 6-bolt-per-cylinder bolt pattern
  • LS7-style rectangle port design
  • Assembled with 2.200" titanium intake and 1.610" sodium-filled exhaust valves
  • 12° valve angle; minimum 4.100" bore
  • 270-cc “as-cast” intake ports, 85-cc “as-cast” exhaust ports
  • 70-cc “as-cast” combustion chambers
  • Handles .650" list with premium springs
  • Uses LS7 rocker arms/LS7 bolts

19354240

LSX-LS7 BARE CYLINDER HEAD – AS CAST

  • Used in P/N 19201806

19354244

LSX-LS9 CYLINDER HEAD ASSEMBLY

  • L92-style rectangle port design
  • Assembled with 2.165" titanium intake and 1.590" sodium-filled exhaust valves
  • 15° valve angle; minimum 4.000" bore
  • 260-cc “as-cast” intake ports, 80-cc “as-cast” exhaust ports
  • 70-cc “as-cast” combustion chambers
  • Uses LS3 rocker arms/LS7 bolts

19417408

LSX-SC BARE CYLINDER HEAD – AS-CAST

  • Made of A356 aluminum with low-pressure casting and Hot Isostatic Pressing for enhanced strength and material density
  • Un-ported casting with smaller water jackets to accommodate additional porting and machining.
  • Valve seats and valve guides included, but delivered uninstalled  

19417887

LSX-SC BARE CYLINDER HEAD – CNC-MACHINED

  • Made of A356 aluminum with low-pressure casting and Hot Isostatic Pressing for enhanced strength and material density
  • CNC-machined intake and exhaust ports
  • CNC-machined combustion chambers
  • Includes valve seats and valve guides installed

19417888

LSX-SC ASSEMBLED CYLINDER HEAD – CNC-MACHINED

  • Made of A356 aluminum with low-pressure casting and Hot Isostatic Pressing for enhanced strength and material density
  • CNC-machined intake and exhaust ports
  • CNC-machined combustion chambers
  • Includes valve seats and valve guides installed
  • Valve seats and guides designed to accommodate 2.20" (intake) and 1.6". (exhaust) valves
  • Assembled head includes 2.20" intake and 1.61" valves and beehive-type valve springs (including retainers and keepers) installed

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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.