Connect with us

Hi, what are you looking for?

Products

Quick Fuel Technology Introduces Three New 450cfm 4V Carburetors

Throttle response can be more important than peak horsepower, especially for most street vehicles, and nothing affects throttle response more than carburetor size. Prior to Quick Fuel Technology’s® (QFT’s) new 450cfm four-barrel carbs, folks with small V8s and 4- and 6-cylinder engines had to work with 600cfm or 650cfm carbs. Regardless of calibration, airflow and fuel curves were rarely optimal.

QFT has solved this dilemma with three new 450cfm models centered around a single die-cast aluminum main body with 1.090” venturis and 1-9/16” throttle plates. There is a mechanical secondary HR-Series, a polished vacuum secondary Slayer model and a Black Diamond® version of the Slayer. These carbs feature normal 4150 modular carb dimensions such as air-horn diameter and baseplate bolt pattern – so they bolt to 4150-flanged intake manifolds and accept traditional four-barrel air cleaners.

QFT’s HR-450 model shows its true performance heritage with mechanical secondaries, dual metering blocks and dual-inlet fuel bowls. The only visible concession to daily street driving is the electric choke. Enthusiasts are already sizing up these carbs as ideal for small-block street tunnel rams. Install the 1:1 Quick-Link™ secondary link for cruise night antics, then swap back to the 40% link for more economical daily driving.

The Slayer SL-450-VS and BD-450-VS offer all of the adjustability of the original Slayer carb and feature the single-inlet, side-hung fuel bowls that make them so adaptable to early muscle cars and O.E. replacements. They both have vacuum secondaries with QFT’s Quick-Set™ single screw adjustment and electric chokes. They are completely adjustable with changeable air bleeds and primary and secondary main jets. The Black Diamond® version lowers fuel temperatures by up to 6% and is scratch and corrosion resistant.

This story was originally published on May 28, 2015. Drag Illustrated

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Advertisement
Advertisement
Advertisement
Advertisement

You May Also Like

News

The star-studded STREET OUTLAWS: No Prep Kings series is set to return for its 6th season in the summer of 2023. Fans can expect to...

News

Street Outlaws: No Prep Kings star and renowned engine builder Pat Musi joined the recent episode of The Wes Buck Show and provided an update...

News

Street Outlaws: No Prep Kings star Lizzy Musi announced today that she has been diagnosed with stage four breast cancer via her Youtube channel....

News

Ryan Fellows, who starred in “Street Outlaws: Fastest in America,” died in a tragic crash while filming for the show in Las Vegas on...

Since 2005, DI has informed, inspired and educated drag racers from every walk of the racing life - weekend warrior and street/strip enthusiasts to pro-level doorslammer and Top Fuel racers. From award-winning writing and photography to binge-worthy videos to electric live events, DI meets hundreds of thousands of racers where they live, creating the moments that create conversations.