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Performer carburetors have two separate float bowls. The primary jets (arrow 1) are between the primary and secondary venturis (only those on the left side of the carburetor are visible). The secondary jets (arrow 2) are to the rear of the carburetor. Note the air valves in the secondaries; the actual throttle valves are below them. View Related Article
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Choke
Classic Trucks
Classic Trucks