Chevy Performance LSX Cylinder Heads

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  • Regular price $2,699.99

Set of LSX drag racing heads. This is the cylinder head that Chevrolet Performance engineers designed for the 770hp LSX454R engine. These LSX-DR (Drag Racing) 11-degree, six-bolt aluminum heads feature raised-runner designs for improved airflow that supports sustained high-rpm performance. Intake port configuration is similar to the competition-derived C5R head, but the ports are raised an amazing 10mm and the intake manifold bolt pattern is spread to accommodate additional port configurations.

  • Fully CNC ported
  • 356-T6 aluminum racing head
  • Valve guides and seats installed
  • 5/8'' thick deck
  • LSX-DR rectangle intake port design - requires LSX-DR intake manifold (p/n 809-19257851)
  • 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
  • 313cc CNC'd intake ports
  • 116cc CNC'd exhaust ports
  • 50cc CNC'd combustion chambers
  • Provisions for down-nozzle machining
  • 9° intake manifold angle - requires new LSX-DR intake manifolds
  • Unique LSX-DR exhaust bolt pattern
  • Raised rocker rails
  • Requires p/n 809-19201808 shaft-mount rocker kit
  • Capable of over 900 naturally aspirated horsepower!
  • Installed on LSX454R engine assembly