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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

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. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!

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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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