Holley 390 stumble

I feel the same way about Holley :angry7: But I must have been lucky on the one I have that my wife gave me for my /6. dual bump.
I wonder " sense it don't do it in first and the beginning of 2 gear " it's reading low vacuum in second and third gear and the dist is not advancing, do you get black smoke when it does this, could it be secondary opening to soon