Holley Dominator Pump Cam Kit
Our Part # 1072B

Fits:
Holley 4500 Dominator carburetors

White pump cam (2 holes)
Yellow pump cam (1 hole) w/shoulder

Quantity: 2 pump cams

Note:
Pump cam location holes are marked on cam.
The holes are used to position and secure the cam to the throttle shaft.
Hole 1 position is generally used for engines with smaller camshafts and idle speeds less than 800 RPM. Hole #1 puts the pump cam in its most advanced location.
Hole 2 position is generally used for engines with large camshafts and idle speeds greater than 900 RPM. Hole #2 retards the pump action by 5 degrees of throttle opening.