[Grubby]

I have a stroked 428 (447) with a mild cam. It has a holley vac secondary. It runs good, side pipes are tan inside and plugs indicate fuel mixture is about right.

The accelerator pump gives a good shot and both sides are equal. I am pretty certain it is a lean stumble.

The carb had a .031 squirter that I drilled in .002 increments. I am now at .037. The stumble is better but still there.

My gut tells me that I have gone far enough and may be chasing the wrong part.

What squirter size are you running in your setup that is similar? Should I go a few more drill sizes up or change accelerator pump cams?

John