Chrysler “FirePower” 331 ci Hemi (Gen 1)


  • Produced from 1951 to 1958 using hemispherical cylinder heads credited with starting the horsepower wars that lasted into the early 1970’s
  • Most FirePower 331’s used a two-barrel carburetor and produced 180 hp except for the 1955 Chrysler C-300 which was equipped with dual Carter WCFB four-barrel carbs and was rated at 300 hp
  • The Don Garlits Museum of Speed in Ocala, Florida has numerous first generation Hemi’s on display. All his “Swamp Rat’ dragsters were powered by Chrysler Hemi’s
  • The intake and exhaust valves lie on opposite sides of half-moon combustion chambers in a “cross flow” design where the intake valve is closest to the intake manifold and the exhaust valve is closest to the exhaust manifold
  • This powerplant was the preferred power for many 1950’s street rods, NASCAR, and drag racers