JET Rochester Big Block Quadrajet Carburetors have all been extensively reworked and balanced to guarantee top-end high rpm fuel flow! The carbs feature an increased main well size, and modified circuits to ensure a correct fuel curve throughout the entire rpm range and to keep consistent idle quality. They are available with a 0.149 inch needle and seat to for adequate fuel flow. Please note that these carburetors are intended for use with modified big block motors with dual plane intake manifolds, headers, an 8.5-9.5:1 compression ratio, and mild ported or aftermarket heads.

Key Features:

• Streetmaster Quadrajet
• Stage 3

Jet Performance was founded over 45 years ago, and started as an engine building and carburetor shop specialized for Drag Racing vehicle applications. Since then, it has held multiple IHRA and NHRA national records in 3 different classes, and has successfully developed and tuned carburetors and fuel systems for some of the top names in Drag Racing, Nascar and Off Road racing! Jet Performance offers consumers a wide range of innovative and high quality products which will work with almost any vehicle, and guarantee to help you realize your vehicle's true power potential!