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Each carburetor is thoroughly converted and calibrated to your engine/car specs. These E85/Gas carburetors will give you the best performance you can ask for. We believe you deserve the best so we offer the best in E85/Gas performance


All RAD carburetors are built to order and built specific to your application so that you get the best performance possible from your carburetor. Here is a few details when you buy your carburetor


  • Completely disassembled, modified, cleaned, and inspected
  • Carbs get converted and calibration
  • Properly adjusted to our specs and match your combo 
  • Ready to Run!
  • Over the phone tech service to help with install and tune


What carburetor is right for me?

600 cfm: This 4 barrel we would use for 95% of the VW engines for Draw Through, Blow Through, and All Motor with a minimum size of 1914cc. It tunes very well and has great response when built for Gas or E85.


650 cfm: When you need a little more bump from the 600 cfm. Primarily for large engines 2054cc and larger with heads that breath, some decent amount of compression, and a pretty large cam.


750/850cfm: All out full race competition use when your engine makes well over 450hp and spins up to 9000rpms. Only available in Draw Through Gas configuration


NOTE: All 4 barrel carbs are Mechanical Secondaries






RAD 4 Barrel Carburetors (Mechanical)

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