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Old 12-21-2004, 06:11 PM
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Holley 4010, 4011 books

Does anyone have a Holley book that tells where to set the throttle position on a 4010 carb?

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Old 12-21-2004, 06:45 PM
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carb

please explain a bit more about what you need to know
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Old 12-21-2004, 06:57 PM
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Old Holleys had transition slots. With those, you adjust the butterflies at the bottom of the slot on the primary side. New Holleys don't have slots. They have two holes.
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Old 12-21-2004, 07:12 PM
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Quote:
where to set the throttle position on a 4010 carb?
Where it idles
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Old 12-21-2004, 07:15 PM
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agreed

yeah i dont quite undertand the question, it is true that if you have to adjust the idle up too high on the transition type body then it does start to run through the main jets. If you have to do this then generally there is another problem. Normally it is bolt on and adjust the idle up or down just a bit to obtain the revs you want at idle
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Old 12-21-2004, 11:51 PM
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On Holley carbs you can't just set the idle at the right RPMs. You have to have the butterflies in the right place in order to allow the carb to meter and transition correctly. It really isn't an easy thing to do.

On the older Holleys I set the primaries so that the transition slot is just a pinhole. Then, I don't ever touch the primary adjustment again. I set the idle from the secondaries. On a 2 corner idle carb this is the best way to get the maximum transition. The idle mixture will be able to be set the best this way.

Does anyone have one of those performance books with a section on 4010s?
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Old 12-22-2004, 12:10 AM
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I saw one with some 4010/4011 info a while back, but I don't remember how in-depth it was. I believe it was either the Holley carb book co-authored by Bill Fisher or David Vizard's book "How to Build Horsepower Vol. 2: Carbs & Intakes". Might look at one of those at a bookstore & see if it has what you need.
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Old 12-22-2004, 08:04 PM
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Quote:
Originally posted by lluciano77
On Holley carbs you can't just set the idle at the right RPMs. You have to have the butterflies in the right place in order to allow the carb to meter and transition correctly. It really isn't an easy thing to do.

On the older Holleys I set the primaries so that the transition slot is just a pinhole. Then, I don't ever touch the primary adjustment again. I set the idle from the secondaries. On a 2 corner idle carb this is the best way to get the maximum transition. The idle mixture will be able to be set the best this way.

Does anyone have one of those performance books with a section on 4010s?
lluciano77,

Per Holley's Rebuild Manual, it talks about setting only the secondary throttle stop adjustment. And my experience, is what you described above, how to tune your idle circuits if your carb is on the small side for what your engine likes, by adjusting the secondaries on a 2 corner idle carb.
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Old 12-23-2004, 06:20 AM
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Quote:
Originally posted by lluciano77
Old Holleys had transition slots. With those, you adjust the butterflies at the bottom of the slot on the primary side. New Holleys don't have slots. They have two holes.
All Holley carburetors are going to have transfer slots. There will also be a curb idle discharge hole that is adjusted from the mixture screws below the butterflies, or a small pin hole below the transfer slot on the secondary side of a two corner idle carburetor.
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Old 12-23-2004, 05:03 PM
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The 4010s don't have a slot. There is the idle discharge hole, and then another hole above that. No slot.

There is a third hole on the secondary side.
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Old 12-23-2004, 05:36 PM
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Lluci, I have a great book on tuning Holly carbs, but it is at the shop. I will try to remember to bring it home tomorrow and see what I can find about the 4010.

Trees
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Old 12-23-2004, 09:34 PM
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I'm sure you've been there, but try Holley's site and download the 10 MB file, it has a little more info than is on line.

http://www.holley.com/HiOctn/TechSer.../Instruct.html
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Old 12-23-2004, 09:40 PM
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Where abouts are you in Calif. I'm In the SF bay area. I have a book by Mike Urich but its too big to scan. I was wondering what you were talking about because I thought all holleys had idle slots then I looked at the book and they have a picture of the holes you talked about. if you want I can scan the section on Idle control and send it to you , but I'll need your email. If you want to look for the book the title is Holley 4010 & 4011 by Mike Urich.

Mike
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