Mark; Thanks for your reply. I guess i left out the cam info. It's a Ford svo,292 dur.,.536 lift. I didn't rebuild the carb. it's only 6 months old from new. The fuel pump is a new Holly, and pressure is about 5 pounds. I also tried adjusting the floats, which were right on. The carb is supposed to have power valve blow out protection. It did back fire trough the carb. on initial start up, but ran ok. Thanks, Paul
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