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Pro-Filer "Hitman" 12° - Dome Series - 10.200" Deck


Diamond Pistons - Chevrolet Big Block Big Pro-Filer "Hitman" 12° - Dome Series / 10.200" Deck Height


  • Designed for use with Pro-Filer “Hitman” Series Cylinder Head
  • Back-cut .043” (.175) x 1/16” x 3/16” ring package 12940-12944 & 12950-12954
  • Back-cut .043” (.175) x .043” x 3/16” ring package 12945-12949 & 12955-12957
  • Top gas ports for maximum ring seal
  • Ratios configured for .005” to .020” deck height @9.800” and 10.200”
  • Premium H-13 Tool steel wrist pins included
  • Gasket volume = 11.3cc’s
  • Top ring down from piston crown = .340”
  • Intake valve relief depth .310, exhaust valve relief depth .098

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