SMALL-BLOCK ALUMINUM RACING CYLINDER HEADS

24502580

SEMI-FINISHED 18° CYLINDER HEAD

  • Fully machined, semi-finished, no seats or guides
  • Non-CNC ports and combustion chamber are “as-cast”
  • 60-cc “as-cast” combustion chambers
  • Designed for up to 2.200"/1.625" valves
  • 215-cc “as-cast” intake ports
  • .080" extra material on deck face and .055" on intake face

24502615

SEMI-FINISHED 15° CYLINDER HEAD

  • Fully machined, semi-finished, no seats or guides
  • Non-CNC ported, ports and combustion chamber are “as-cast”
  • Great head for drag racing Comp-Eliminator, both V-8 and 4-cylinder applications
  • Casting has been “rolled” 2°, valve guides are also tipped 1°
  • 210-cc “as-cast” intake ports
  • 35-37-cc “as-cast” combustion chamber
  • Capable of 900+ horsepower
  • Multiple professional drag racing world records

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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.