fast idle adjust - The 1947 - Present Chevrolet & GMC Truck Message Board Network

76bonanza · 10-24-2005, 06:17 PM

I need to lower the rpms on my choke this is done by the fast idle screw yes?

I think it is on the passenger side of carb(holly 3310) How do I do it turn in what direction and small amounts or large amounts?

Thanks for any help

68Stepbed · 10-24-2005, 09:00 PM

It's pretty tricky. You can use a small flat blade screwdriver. You'll have to look at the screw from the front of the carb between the choke and main body and stick the screwdriver in from behind the choke. I can't remember which way to turn it. Just adjust it while it's cold and the choke is on.

That's the only thing I don't like about Holleys. Could they have made them any harder to get to?

10-24-2005, 06:17 PM	#1
76bonanza Senior Member Join Date: Mar 2003 Location: St robert Mo Posts: 2,001	fast idle adjust I need to lower the rpms on my choke this is done by the fast idle screw yes? I think it is on the passenger side of carb(holly 3310) How do I do it turn in what direction and small amounts or large amounts? Thanks for any help __________________ 1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO

10-24-2005, 09:00 PM	#2
68Stepbed Registered User Join Date: Mar 2005 Location: 10-Uh-See Posts: 5,609	Re: fast idle adjust It's pretty tricky. You can use a small flat blade screwdriver. You'll have to look at the screw from the front of the carb between the choke and main body and stick the screwdriver in from behind the choke. I can't remember which way to turn it. Just adjust it while it's cold and the choke is on. That's the only thing I don't like about Holleys. Could they have made them any harder to get to? __________________ Matt 68 C10 stepside, LS1/700R4, TCI Engineering suspension system



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.