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Holley Pump Cam Chart

Holley Pump Cam Chart - The pump diaphragm, the pump cam and the pump nozzle. The most commonly used accelerator pump cam profile is the white version. The #1 and #2 used to be called summer and winter, with winter being slightly more volume due to temps and fuel. Also in plumbing an fittings and hose. White, blue, red, orange, black, green, pink & brown. Web in the book there is a chart that shows exactly how much each cam pumps by color. In the days of `57 ford 312’s and `60 dodge 383’s the purpose was for a summer and winter setting of the accelerator pump. Web use # 2 holes in the cam and carb positions for starting. They will not work with 30cc pumps. Remember if you change you pump cam to readjust your accel pump linkage, you don't want to over extend it.

Also, if you order a pump cam kit, you will notice that the cams are double profiled. Categories / gauges and gauge accessories Web accelerator pump cams on holley carbs can be swapped out to deliver advanced or delayed accelerator pump delivery depending on your engine's normal idle speed. The pump diaphragm, the pump cam and the pump nozzle. The chart is for the 30cc pump cams. The #1 & #2 refers to the holes in the throttle lever for the screw that attaches the cams, positions 1 and 2. It delivers a full shot, quickly. Web i also run the pink cam on my 600 dp that has been substantially modified for better flow. The yellow and brown cams are for 50cc pumps. Web white and pink cams are a good starting point, as they are more linear.

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Web Accelerator Pump Shot Relative To Cam Color From Lightest To Heaviest Are As Follows:

Web here is the chart i like to use and it has done the best for me. The #1 and #2 used to be called summer and winter, with winter being slightly more volume due to temps and fuel. Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions. Web pump cam lift vs.

In The Days Of `57 Ford 312’S And `60 Dodge 383’S The Purpose Was For A Summer And Winter Setting Of The Accelerator Pump.

But that does not seem to relate with the chart at all that i can tell. The most commonly used accelerator pump cam profile is the white version. Hold the carb at wot and adjust the spring on the lever for 15 thou clearance between it and the pump arm. None of this information will mean diddly squat if your pump arm follower.

I’m Thinking The Nozzle Should Be Around 27 On The Front, Unsure What It Should Be On The Back.

Web white and pink cams are a good starting point, as they are more linear. As for the pump cams, does what’s in there sound right? Web accelerator pump cams on holley carbs can be swapped out to deliver advanced or delayed accelerator pump delivery depending on your engine's normal idle speed. Get a #31 discharge nozzle installed.

Everything Is Adjusted As It Should Be.

The #1 & #2 refers to the holes in the throttle lever for the screw that attaches the cams, positions 1 and 2. In addition to playing with the cam, you can also increase the pump shot from 35 to 50 ccs, but that shouldn't really be necessary. My combination and dyno sheet: Utilizing this chart will help you determine the correct accelerator pump cam for your specific application based on how aggressive the accelerator cam profile is.

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