Thread: Holley Carb. gggrrrrrrrr!

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Well, I bolted on my new holley double pumper today. I noticed that the two rear idle mixture screws were missing. I thought, well, that sucks. So I went and bought some. When I tried to put them in, the screws would not thread in. There are no threads for them to grab! Isnt the double pumper have a 4 corner idle system? What should I do?

no not all of them do . you have a meter block that will take power valves and jets .no idle circuit.

thanks pat, so should i try it out and see if any gas comes out?

no i would say they are not drill for a ilde just check with a tooth pick or small wire if there no hole drill there then no need to worry. you can look at were the mix screws go should see thats there is no threads in the meter block

front idle is easier to tune ,4 corner is really only needed for racing, but thats your goal, yours will still work fine.