lsx

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

19166979

LSX-DR CNC-PORTED CYLINDER HEAD

  • Fully CNC-ported
  • 356-T6 aluminum racing head, 5/8"-thick deck
  • LSX-DR rectangle intake port design – requires LSX-DR intake manifold
  • LSX-CT/DR spread port exhaust port pattern
  • Cast-in down-nozzle bosses (not machined)
  • Designed for up to 2.280" intake and 1.620" exhaust valves (4.165" minimum bore)
  • Machined for 1.660" valve springs; 11° valve angle
  • Minimum 4.125" bore
  • 313-cc CNC’d intake ports, 116-cc CNC’d exhaust ports
  • 50-cc CNC’d combustion chambers
  • Requires 19201808 shaft-mount Rocker Kit
  • Capable of 900+ naturally aspirated horsepower
  • Installed on LSX454R engine assembly

19202986

LSX-DR CYLINDER HEAD

  • Rough-machined seats and guides for cylinder head porters to work their magic
  • 356-T6 aluminum racing head, 5/8"-thick deck
  • LSX-DR rectangle intake port design – requires LSX-DR intake manifold
  • LSX-CT/DR spread port exhaust port pattern
  • Cast-in down-nozzle bosses (not machined)
  • Designed for up to 2.280" intake and 1.620" exhaust valves (4.165" minimum bore)
  • Machined for 1.660" valve springs, 11° valve angle
  • Minimum 4.125" bore
  • Requires 19201808 shaft-mount Rocker Kit
  • Capable of 900+ naturally aspirated horsepower
  • Installed on LSX454R engine assembly

19330896

LSX-CT CNC-PORTED CYLINDER HEAD

  • Fully CNC-ported
  • 356-T6 aluminum racing head
  • 5/8"-thick deck
  • LSX-CT rectangle-intake port design – requires LSX-CT intake manifold
  • LSX-CT/DR spread-port exhaust port pattern
  • Cast-in down-nozzle bosses (not machined)
  • Designed for 2.200" intake and 1.610" exhaust valves
  • Machined for 1.625" valve springs
  • 11° valve angle
  • Minimum 4.125" bore
  • 302-cc CNC’d intake ports
  • 109-cc CNC’d exhaust ports
  • 45-cc CNC’d combustion chambers
  • Capable of over 850+ naturally aspirated horsepower

19202985

LSX-CT CYLINDER HEAD

  • Rough-machined seats and guides
  • Ready for custom porting

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.