what is the proper float level on a holley double pumper. some say the fuel should dribble out and others say to let it dribble out and lower it a bit more. who is right?

 

Holley says let it dribble, the carb. experts say something else...
either way should be fine...

 

I do mine per the Holley recommendation. A slightly low fuel level in the bowls will make you run a LITTLE leaner, but probably not enough to feel or even measure via CO emmissions.

 

This is directly from the Holley website:

QUESTION How do I adjust the fuel level on my carburetor?

ANSWER Setting the fuel level should be the first thing you do before attempting to make any further adjustments.The float level should put the fuel level just below the bottom of sight plug hole. You will make the adjustment with the vehicle on a level surface and the engine idling. You will first remove the sight plug, then to make your adjustment you will need to loosen the lock screw on the needle and seat. This will allow you to turn the adjusting nut to raise or lower the float level. Each hex flat on the nut will change the float level approximatly 1/32". When you have the fuel level just below sight plug hole you will then tighten the lock screw and reinstall the sight hole plug. Make sure you have a shop towel handy in case you have any fuel leaks from the Sight plug or needle and seat adjusting nut.


If you want to do a little more research, check out this article from Holley:
http://www.holley.com/data/TechServi...Carburetor.pdf

I would say to start with it right below the hole. If you think that you do not have enough fuel, then go up a little, otherwise, right below the hole is a safe spot.

Thanks,
Joe