Pump Cam, Holley, Carburetor, 8 PC Set

Carburetor Accelerator Pump Cam Set, 8-Piece by Holley®

Different cam profiles change accelerator-pump actuation to help tune off-idle fuel delivery.

This Holley® assortment contains eight accelerator pump cams for tuning a compatible carburetor. The different profiles change pump actuation as the throttle rotates, allowing the timing and shape of the pump shot to be adjusted for the engine combination. Cam selection works with pump adjustment and nozzle size; a cam is not a substitute for correcting an improperly adjusted linkage.

• Eight accelerator pump calibration cams • Multiple profiles for pump actuation • Adjusts pump-shot timing and delivery • Compatible Holley® carburetor tuning components