Holley Pump Cam Chart

Holley Pump Cam Chart - Remember if you change you pump cam to readjust your accel pump linkage, you don't want to over extend it. The longer the graph the longer the shot duration per pump shot and the shorter the graph the shorter the shot but is a quicker and bigger but less duration of throttle opening. The chart is for the 30cc pump cams. Throttle position 41r643 yellow 41r336 brown 41r427 blue 41r466 orange 41r290 green 41r240 red 41r218 white 41r330 pink 41r234 black. Also in plumbing an fittings and hose. But that does not seem to relate with the chart at all that i can tell. This will help you pick the next size up or next size down when changing them out. Web here is the chart i like to use and it has done the best for me. Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in your tool box and a decent vacuum gauge, to tune with is a big help at times Web when you look through holley literature and videos regarding tuning the accelerator (squirter) pump cam, most say to use position 1 (smaller squirt later) for heavy cars and position 2 (bigger squirt earlier) for a light car.

As for the pump cams, does what’s in there sound right? Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in your tool box and a decent vacuum gauge, to tune with is a big help at times 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. Hold the carb at wot and adjust the spring on the lever for 15 thou clearance between it and the pump arm. Web primary pump cam is pink with a number 23 nozzle. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of the cams alter the lift curve. 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. The pink cam is the least aggressive cam in the pack. 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.

Holley accelerator pumps/cams Grumpys Performance Garage

If holes 2 or 3 are used, the motion is retarded (moved to the right on the graph by about 5 to 8 degrees). White, blue, red, orange, black, green, pink & brown. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of the cams alter the lift curve. Secondary pump cam is.

Holley accelerator pumps/cams Grumpys Performance Garage

Web the brown is a 50cc pump cam; The two positions recenter the cam, and as the chart shows, the effect varies with the cam profile. The pump diaphragm, the pump cam and the pump nozzle. The #1 and #2 used to be called summer and winter, with winter being slightly more volume due to temps and fuel. The most.

Confusion in Tuning the Holley Accelerator Pump Cam CorvetteForum

Hold the carb at wot and adjust the spring on the lever for 15 thou clearance between it and the pump arm. My combination and dyno sheet: Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in your tool box and a.

Holley Pump Cams

Web when you look through holley literature and videos regarding tuning the accelerator (squirter) pump cam, most say to use position 1 (smaller squirt later) for heavy cars and position 2 (bigger squirt earlier) for a light car. The two positions recenter the cam, and as the chart shows, the effect varies with the cam profile. Web use # 2.

Holley accelerator pumps/cams Grumpys Performance Garage

Also in plumbing an fittings and hose. I’m thinking the nozzle should be around 27 on the front, unsure what it should be on the back. The two positions recenter the cam, and as the chart shows, the effect varies with the cam profile. Throttle position 41r643 yellow 41r336 brown 41r427 blue 41r466 orange 41r290 green 41r240 red 41r218 white.

Holley accelerator pumps/cams Grumpys Performance Garage

Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in your tool box and a decent vacuum gauge, to tune with is a big help at times Also, if you order a pump cam kit, you will notice that the cams are.

Holley pump cam color ID info Vintage Mustang Forums

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. The pink cam is the least aggressive cam in the pack. As for the pump cams, does what’s in there sound right? Throttle position 41r643 yellow 41r336 brown 41r427 blue 41r466 orange 41r290 green 41r240.

Carb Science Series — Accelerator Pump Tuning for Holley Carburetors

Everything is adjusted as it should be. 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. Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in.

Holley 50cc Pump Cam Chart A Visual Reference of Charts Chart Master

Everything is adjusted as it should be. This will help you pick the next size up or next size down when changing them out. They will not work with 30cc pumps. You will also probably wind up playing with squirters if you are trying to fix a stumble. As for the pump cams, does what’s in there sound right?

Holley vac. sec. question Team Camaro Tech

These cams offer options relative to the amount of pump lift per degree of throttle opening. Web the brown is a 50cc pump cam; Web pump cam lift vs. Web when you look through holley literature and videos regarding tuning the accelerator (squirter) pump cam, most say to use position 1 (smaller squirt later) for heavy cars and position 2.

Secondary Pump Cam Is Brown With A Number 31 Nozzle.

If holes 2 or 3 are used, the motion is retarded (moved to the right on the graph by about 5 to 8 degrees). Web these two charts show the lift profile of the various holley fuel pump cams when located using hole 1. The blue cam is the most aggressive cam in the pack. The two positions recenter the cam, and as the chart shows, the effect varies with the cam profile.

The Most Commonly Used Accelerator Pump Cam Profile Is The White Version.

White, blue, red, orange, black, green, pink & brown. Categories / gauges and gauge accessories 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.

My Combination And Dyno Sheet:

Also in plumbing an fittings and hose. Also, if you order a pump cam kit, you will notice that the cams are double profiled. Web if your tuning a holley carb having the 50cc accelerator pump kit and a selection of accelerator pump cams, a set of jets, squirters,and power valves in your tool box and a decent vacuum gauge, to tune with is a big help at times Web accelerator pump shot relative to cam color from lightest to heaviest are as follows:

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.

Web here is the chart i like to use and it has done the best for me. They will not work with 30cc pumps. Web pump cam lift vs. Web below you will find a chart and graph that illustrate the lift of each colored accelerator pump cam at various degrees of throttle rotation.