4500 Blog

So you've acquired a project, open the hood and find there's no carburetor or throttle body bolted atop your new engine. How do you find out what you need? This helpful walk-through will steer you through the various popular carburetor flanges and show you which options are available from Holley!
Read More

Holley is pleased to announce the expansion of their popular Training courses, that's right, consumers will now have the ability to learn carburetors from one of the most trusted names in performance. For more than 115 years, Holley has been producing quality fuel system components and now is your chance to learn in a hands-on classroom environment right here in Bowling Green, KY! Click here to learn more!
Read More

The NRHA Pro Stock drag racing class became an official Eliminator bracket during the 1970 racing season. From Day One, its contestants chose a matched pair of Holley four-barrel carburetors atop their engines no matter who the car manufacturer was. Pro Stock grew out of Super Stock (S/S) racers’ frustration with hard braking at the finish line to keep from losing via .... CLICK HERE TO LEARN MORE!
Read More

The close alliance between NASCAR and Holley Performance Products goes beyond a mere business relationship. In fact, it began in the days of Bill France Sr., known as “Big Bill,” a racer and one of the founders of NASCAR. This was back when Holley was called Holley Carburetor Company. It was France who created the deal that made Holley the one and only.... CLICK HERE TO READ MORE!
Read More

They're engineered specifically for 350+ cubic-inch engines with 4500-style intakes and deliver 150, 180, 210, or even 250 extra horsepower.
Read More

They support up to 1,500 horsepower naturally aspirated and up to 1,250 on forced induction applications
Read More

The system worked perfectly right out of the box with consistent 5.0s on the 1/8th mile
Read More