A friend had a similar problem on a carb equipped Ford 300 straight Six that he 'warmed up' courtesy of Clifford performance,... I don't remember the size he initially went with, but it was horrible until around 2200 rpm, then it would sent the rear-end sideways if you weren't careful on a low-budget t-bucket,... he went to a smaller carb and played around with the jetting until he got it right. Then it was a monster off the line!
