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Carbureted Plate Systems

NOS offers a variety of Carbureted Plate Nitrous Systems for single 4-barrel and dual 4-barrel setups.

Home /
Nitrous /
Carbureted Plate Systems /

4150 or Square Flange
4500 or Dominator Flange
6-71 or 8-71 Supercharger
Conversion and Upgrade Kits
Quadrajet and Other Flange

Features & Benefits

From street easy to full race, NOS has you covered
Bolt on an extra 100-500 horsepower
4150 and 4500 flange kits available

About Us

For over a century Holley has driven the cutting edge of fuel-system design. That work continues today through Holley’s market-leading EFI products as well as through Holley’s family of best-in-industry brands. Top brands like MSD, Flowmaster, Hurst, Accel and many more make up the industry’s leading offering of enthusiast-driven products to deliver robust, complete performance solutions for builders, racers, and drivers. From propelling the LS-, Coyote-, and Gen 3 Hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do.

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Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Read More...

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