Well i have been having extremely aggrivating problems with holley carbs. I have been through four of the 65-1850s series wich are the 600cfm remanufactured ones. They would never idle right and i couldnt adjust it with the mixture scews on each side and all kinds of problems. Today i went to O'Reilly's where i bought the carb(carbs) from and told them i wanted to get a edelbrock. So i get the edelbrock and bring it home hook it up and it runs like a dream. Sets just right and runs great. WHAT GIVES>>??

I think you just bought the best all around street carb you can currently get.
Edelbrocks work!!! And no power valve issues.
Slider in Wa.

There is your problem...never buy a used Holley carb unless you know it worked well to begin with.

Your comparing used remanufactured junk with a new Edelbrock? Thats not fair?

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Outlawed tunes from outlawed pipes

i had the same problem with my holly that came on my 69 f100 i just couldn't tune the thing to work correctly on my truck. I dint matter what i did the thging would hesitate and want to bog out finally i said forget it,I dont need the stress and bought a eidelbrock and my truck runs like a champ. I learned a valuable lesson "if you have lots of spare time and enjoys dismantling carbs buy a holly".

I to learned a valuable lesson " IF YOU ARE A CHEAP AND DUM *** BUY A EDELBROCK"!!!!

A remanufactured carb, you gotta be kiddin. Never ever buy a remaufactured carb, especially a Holley.

Vince

It takes a good mechanic to run a good carb.

Anybody can buy a simple carb .

I run 4 hollys and one afb,the hollys out perform the afb.

Troy;

Never buy a used Holly even if rebuilt. When you have a problem with a Holly go to their site for a free downloadable manual and trouble shooters guide. From what you described it was a minor adjustment with the accelerator pump and delivery nozzles.
Could have save some money by reading up on the carb.
The Knowledge Base has a lot of info reguarding this problem.
Heres Hollys site for future referance.
http://www.holley.com/HiOctn/TechSe...fo/FMCTech.html

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Luv the smell of NITRO in the morning.

Hollys are like cars,the only way I can buy them is used, then fix.