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Old 10-11-2020, 01:31 AM   #1
Will D
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Default Correct float setting

What would correct float setting for Holley 94 model 91-99 be? The instructions that came with rebuild kit says between 1 11/32 to 1 3/8. The Charlie price YouTube videos say 1 5/16 but to adjust differently depending on engine angle. My engine with a bubble level on top of carb shows engine tilts back approx 1/8. As well, is the measurement taken from the gasket to top of float or gasket mating(remove gasket to measure) surface to top of float?
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Old 10-11-2020, 06:46 AM   #2
Charlie ny
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Default Re: Correct float setting

1.350 has always worked for me......good for slight variations in engine angle
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Old 10-11-2020, 12:07 PM   #3
Bored&Stroked
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Default Re: Correct float setting

Don't overthink it . . . 1/32 of an inch isn't going to make any difference at all. The most important thing is to make sure you have a good fuel filter, that the fuel lines (if rubber) are new and not cracked, etc and that your fuel pressure is correct. I always run a low-pressure fuel regulator - Holley makes a good one

Many of the re-pop mechanical pumps put out way too much fuel pressure - though the Holley style float and needle is a lot more forgiving than the Stromberg 48/81/97 variants. I'd set the fuel pressure to around 3 lbs on a Holley setup. You can use the Holley/Quickfuel part number of 30-804QFT - it is for 1 - 4 lbs.

https://www.holley.com/products/fuel...arts/30-804QFT

If you're running a multi-carb setup, then buy a 'UniSyn' device that helps you synchronize the throttle plate openings so the approximate same amount of air is passing through each. Edelbrock makes/distributes a version of the tried and true device . . . have used my old one for 45 years! LOL

https://www.summitracing.com/parts/e...+5ba26345ab498
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Old 10-11-2020, 02:15 PM   #4
tubman
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Default Re: Correct float setting

In a contest between the two "Charlie's"; the one in New York wins, hands down.
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Old 10-11-2020, 04:03 PM   #5
Ol' Ron
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Default Re: Correct float setting

I noticed that ovber the years there have been allot of questions about float settings. Are float settings very important?? Well not really, However!!! If their too high, you could be in big trouble, but too low not much. For a street engine that is run as general transportation, Setting the float lower won't make much difference. The function of the float is to replace the fuel the engine uses. The float bowl is large enough to supply enough fuer to run your engine at Max speed for an unlimited period of time. If the float is too low, not so much. I always set my floats on the low side.
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Old 10-12-2020, 03:01 PM   #6
JSeery
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Default Re: Correct float setting

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1 11/32 is 1.344 & 1 3/8 is 1.375. Charlie's (NY) number is somewhat in the middle at 1.350.

1 5/16 is 1.313, might work, but is quite a bit below the spec!
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Old 10-12-2020, 04:15 PM   #7
ford38v8
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Default Re: Correct float setting

If one were to rely on the flimsy cardboard square supplied with carb kits, you'd be lucky to come close to whatever dimension you decide on. Flatten a beer can, lay out the dimensions and cut a gauge that sits squarely across the flat of the air horn to keep in your carb tool box. Remember also, the float may well lean to one side, requiring leveling before using the gauge.
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Old 10-13-2020, 11:20 AM   #8
Bill OH
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Default Re: Correct float setting

Drink the beer first!!!
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