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Original Message
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| RE: Holley Carb Problem |
| By Will - 07/21/2001 11:42:04 PM; IP 24.162.191.90 |
You may also try leaning out the jets.
I'm assuming you don't have chokes. It's been a while since I've seen 660's. If you start okay w/out a choke, you are way too rich. You have to hold it open when you're warmed up because it's flooding out. Also the black smokt - too rich.
I'm not saying the 660's will work well on the street, but you should try the normal tuning steps.
First, tune the idle mixture until you read the highest vacuum. Once you have that set, tune the jets. I used an O-2 sensor to read about 15:1 at cruise speed.
Also, once you have the idle and timing set, you should hook up a vacuum gauge and see what your cruise and idle vacuum are. Install power valves that open about 2" lower than your idle or cruise vacuum readings.
I wouldn't be surprised if the 660's don't have power valves. They're not really needed on a race carb, since you run wide open all the time anyway.
Hope this helps. |
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