Holley carb help

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Holley carb help

Post  mustang68mustangs1 on July 17th 2016, 8:26 pm

I need some input guys. I have a 466 with a Holley 850 DP. No choke. Also no power brakes.
The problem is I live on a fairly steep hill and when i slow down suddenly or come to a quick stop the car want to stall.
I dont think my secondary bowl is dumping fuel into the carb because my carb has the plastic vent baffles in place. I have the floats set to the baseline setting to where fuel spills out of the port when you shake the car slightly.
Someone suggested backing off my idle mixture screws an 1/8 turn but i dont know what this would do to help. My car idles around 900 rpm. Any help would be appreciated. Ive been dealing with this for a while now but am getting tired of it.
Let me know if more info is needed.
Thanks Bob

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Re: Holley carb help

Post  Dave De on July 17th 2016, 11:37 pm

Raise the float level.
Turn the front needle/seat cartridge CCW about 1/3 turn
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Re: Holley carb help

Post  BBFTorino on July 18th 2016, 11:11 pm

Fuel uncovering the front jets.

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car dieing

Post  ED468 on July 23rd 2016, 10:05 pm

I bet more Base timing will help. Plus maybe a hair richer on mixture screws about a half turn out on front.

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Re: Holley carb help

Post  mustang68mustangs1 on July 23rd 2016, 11:42 pm

Thanks for the help guys . Im gonna try one thing at a time and ill let you know what helps or hurts!
Bob

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