JET Performance now offers a Quadrajet carburetor built exclusively for circle track racing. The carburetor is extensively reworked by increasing main well size and is balanced to assure high RPM fuel flow. Several circuit modifications are made for a richer fuel curve throughout the entire RPM range, particularly at wide open throttle. Includes a .149 needle and seat to ensure adequate fuel flow. The carburetor is designed for heavily modified 355-406ci small block motors with a single plane intake manifold, headers, 11.5:1 compression ratio and high flowing cylinder heads. Recommended cam specs: Duration at .050 min 250 degrees plus, lift .525 plus.

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