Merlin III Mark-IV Cast Iron Engine Blocks
  • Semi-finished bore allows final honing to suit your piston/ring package





  • Merlin III Mark-IV Race-Prepped Cast Iron Engine Blocks
  • Finish machined/honed bore for standard piston and ring assembly


  • Merlin III Gen-VI Cast Iron Engine Blocks
  • Semi-finished bore allows final honing to suit your piston/ring package