Holley Pump Cam Chart

Holley Pump Cam Chart - Everything is adjusted as it should be. Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions. The pink cam is the least aggressive cam in the pack. None of this information will mean diddly squat if your pump arm follower. Web here is the chart i like to use and it has done the best for me. 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 two positions recenter the cam, and as the chart shows, the effect varies with the cam profile. You will also probably wind up playing with squirters if you are trying to fix a stumble. They will not work with 30cc pumps. This will help you pick the next size up or next size down when changing them out.

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. Web here is the chart i like to use and it has done the best for me. Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions. Secondary pump cam is brown with a number 31 nozzle. The blue cam is the most aggressive cam in the pack. Remember if you change you pump cam to readjust your accel pump linkage, you don't want to over extend it. The pink cam is the least aggressive cam in the pack. If holes 2 or 3 are used, the motion is retarded (moved to the right on the graph by about 5 to 8 degrees). I’m thinking the nozzle should be around 27 on the front, unsure what it should be on the back.

Holley pump cam color ID info Vintage Mustang Forums

The chart is for the 30cc pump cams. The most commonly used accelerator pump cam profile is the white version. Web these two charts show the lift profile of the various holley fuel pump cams when located using hole 1. Web use # 2 holes in the cam and carb positions for starting. The #1 & #2 refers to the.

Holley accelerator pumps/cams Grumpys Performance Garage

Web pump cam lift vs. Web primary pump cam is pink with a number 23 nozzle. Also, if you order a pump cam kit, you will notice that the cams are double profiled. The yellow and brown cams are for 50cc pumps. Web the accelerator pump system consists of three main components:

Confusion in Tuning the Holley Accelerator Pump Cam CorvetteForum

The two positions recenter the cam, and as the chart shows, the effect varies with the cam profile. They will not work with 30cc pumps. Web below is pic of holley pump cams, and how they deliver fuel based on throttle positions. Secondary pump cam is brown with a number 31 nozzle. Throttle position 41r643 yellow 41r336 brown 41r427 blue.

Holley accelerator pumps/cams Grumpys Performance Garage

White, blue, red, orange, black, green, pink & brown. 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 #1 & #2 refers to the holes in the throttle lever for.

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

I’m thinking the nozzle should be around 27 on the front, unsure what it should be on the back. Web i also run the pink cam on my 600 dp that has been substantially modified for better flow. They will not work with 30cc pumps. Web accelerator pump shot relative to cam color from lightest to heaviest are as follows:.

Holley vac. sec. question Team Camaro Tech

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 in the book there is a chart that shows exactly how much each cam pumps by color. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of.

Carb Science Series — Accelerator Pump Tuning for Holley Carburetors

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 these two charts show the lift profile of the various holley fuel pump cams when located using hole 1. Web accelerator pump cams on holley carbs can be swapped out to deliver advanced or delayed.

Holley Pump Cams

The #1 and #2 used to be called summer and winter, with winter being slightly more volume due to temps and fuel. But that does not seem to relate with the chart at all that i can tell. Holley includes a graph in the catalog we’ve reproduced for this article that shows how each of the cams alter the lift.

Holley accelerator pumps/cams Grumpys Performance Garage

None of this information will mean diddly squat if your pump arm follower. The two positions recenter the cam, and as the chart shows, the effect varies with the cam profile. Also in plumbing an fittings and hose. Everything is adjusted as it should be. Web in the book there is a chart that shows exactly how much each cam.

Holley accelerator pumps/cams Grumpys Performance Garage

Web accelerator pump shot relative to cam color from lightest to heaviest are as follows: They will not work with 30cc pumps. As for the pump cams, does what’s in there sound right? 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. This will.

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 blue cam is the most aggressive cam in the pack. Throttle position 41r643 yellow 41r336 brown 41r427 blue 41r466 orange 41r290 green 41r240 red 41r218 white 41r330 pink 41r234 black. Everything is adjusted as it should be. Web i also run the pink cam on my 600 dp that has been substantially modified for better flow.

Get A #31 Discharge Nozzle Installed.

Web these two charts show the lift profile of the various holley fuel pump cams when located using hole 1. 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. They will not work with 30cc pumps. The most commonly used accelerator pump cam profile is the white version.

The Two Positions Recenter The Cam, And As The Chart Shows, The Effect Varies With The Cam Profile.

Web the chart is right. These cams offer options relative to the amount of pump lift per degree of throttle opening. My combination and dyno sheet: The pink cam is the least aggressive cam in the pack.

Holley Includes A Graph In The Catalog We’ve Reproduced For This Article That Shows How Each Of The Cams Alter The Lift Curve.

Also, if you order a pump cam kit, you will notice that the cams are double profiled. The yellow and brown cams are for 50cc pumps. You will also probably wind up playing with squirters if you are trying to fix a stumble. Remember if you change you pump cam to readjust your accel pump linkage, you don't want to over extend it.