These aluminum main body retrofit kits convert your Holley 650-750 CFM Carb Mechanical Secondary to an aluminum main body for increased horsepower, torque & airflow. With no air horn, choke tower, or choke control to restrict airflow, they deliver extra power easily and affordably. These aluminum main bodies are available in a shiny finish and come complete with all the parts necessary to take your carburetor to the next level!

Features:

  • Main bodies are factory assembled and kit includes new gaskets to complete the conversion
  • New main jets are included, however further tuning may be necessary depending on the application
  • Simple installation with common hand tools
  • Pre-calibrated at the factory for optimum performance and drivability on a wide variety of applications
  • Reduces turbulence and smooths air entry into the venturi
  • Eliminates choke tower on your existing carburetor if applicable.

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