Carb ?????
I hooked up a vacuum gage and i am only reading 6 inches of vacuum at idle. I have a healthy cam listed in my sig. and man brakes. I got this reading doing what holley said, which is adjust the 4 idle screws untill max vacuum is reached with out messing with the idle. The stock power valve is 6.5. Holley said divide vacuum by 2 and this is the valve you need. I called them with my reading and they said use a 2.5. The reason i needed to change in the first place is because i was running rich. They said a smaller pavle will fix it. Anyway i put in the 2.5 power valve and now it runs like ***. No backfire, but spitting,coughing, and it just runs bad. Any ideas would be appreciated.
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