Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Carburetor, Rochester Big Block Quadrajet, 800-899 cfm, Remanufactured, 4 Barrel, Spread Bore, Chevy, Big Block, Each

JET Performance has released these Quadrajet carburetors for Chevy and GMC cars and trucks with 396 c.i.d. and larger modified big block engines. The carburetors are extensively reworked with an increased main well size and are balanced to ensure top-end high-rpm fuel flow. Several circuit modifications are made to keep the fuel curve correct throughout the entire rpm range and to keep consistent idle quality. The carburetors include a .149 in. needle and seat to ensure adequate fuel flow. They are designed for modified big block motors with dual plane intake manifolds, headers, an 8.5-9.5:1 compression ratio, and mild ported or aftermarket heads.