This is a serious carb for serious motors and it moves a serious amount of air! This 1450 CFM monster from Quick Fuel Technology is being heralded as one of the biggest things to hit the ranks of Pro Stock in quite some time. It would also be an appropriate carb for large cubic inch motors in Top Dragster and Top Sportsman entires in our opinion. Besides, we’ve always wanted a carb that we could reach down through the venturis to pick up something that fell into the intake manifold!
There’s lots of engineering at work here and Quick Fuel told us all about it. The carbs are hand built by Quick Fuel, feature their new three-circut billet metering blocks, use QFTs new lightweight aluminum body, and have had lots of work done to optimize air flow, and encourage the best best possible fuel atomization. These babies mean business!
Here’s the full release from Quick Fuel Technologies:
The biggest thing to hit the NHRA Pro-Stock class in recent history is the Quick Fuel Technology (QFT) 1450-cfm QFX carburetor (#FX-4714). This mega-sized carb is hand-assembled with race engineered and tested components including the new 3-circuit QFT Billet Metering Blocks (#34-77).
The new proprietary QFX lightweight aluminum main body design features a reshaped venturi entrance for consistent and improved airflow, a lengthened venturi section for better throttle response, screw in air bleeds and CNC-Billet aluminum annular boosters. The air bleeds are shielded from the air entering the venturi to nearly eliminate air turbulence allowing for a smoother air stream and better fuel atomization through the carb.
The unique metering blocks are engineered with 5 emulsion channels with screw in restrictions to help optimize the air/fuel ratio in this enormous 1450-cfm carb. Changing these restrictions are as easy as changing jets and offer unsurpassed tuning ability throughout the RPM range. QFT assembles the QFX carbs using its aluminum fuel bowls with dual sight glass windows and inlets. The contoured fuel entrance and internal baffling helps reduce turbulence and fuel aeration.
Every QFX carb comes with non-stick gaskets and 2 additional links to change the opening ratio of the secondaires from soft progressive to medium progressive or 1:1.
