Talk about serious. This model has more wins than even we could imagine. If you’re a 4150 type of racer, what can we say, this is it! If it’s naturally aspirated or using light nitrous (nitrous shot of 350 hp or less) this design is the one. It has all the features you could ever ask for in a carburetor. Machined stepped boosters, a true race fuel curve (not a corporate design), and a custom multi-adjustable bleed configuration that allows this model almost infinite adjustability. This design flat out works on almost everything. It even sounds tough cruisin’ the streets.

Pro Systems Racing Carburetors - 4150 BlackPro Systems Racing Carburetors - 4150 Silver

(Dogleg booster shown, annular model available.)

The new PRO Series 4150 include these features:

  • HP style main body
  • Available in cfm ranges from 780-1040
  • VENOM II Billet Metering blocks or Modified Holley Cast blocks
  • Adjustable air bleeds
  • Billet Base Plate
  • Balanced drag float or Tunnel Ram Floats(10-12.5 grams)
  • Screw-in jet extensions
  • Clear sight glass
  • Stainless plate screws
  • Custom sized needle and seats (.110-.150)
  • Electronically wet-flow calibrated
  • Custom true race or throttle stop/bracket or street use – fuel curve
  • Live-engine tested
  • Techline access
  • Wet-flow dyno sheet for easy jet selection

Priced as low as: $760.00/gasoline (780 cfm) or $820.00/alcohol