Originally posted by 80BU
I HAVE A 355 SMALL BLOCK CHEVY. IN A 80 MALIBU AT ABOUT 4000 RPM TO 6500 IT HAS A BAD MIS IT HAS A MALLORY UNILITE DIST AND A PROMASTER COIL.A HOLLEY 750 CARB.I NEED HELP
Got a little more information for us to go on?

Like ..........

When's the last time it had a tune-up?
What kind of shape are the plug wires in?
When's the last time the carb. was looked at?
Is the fuel filter new?
Does it do it when it's cold/hot?
Did it just start doing this or is it a new engine or a rebuild?

All else fails ............... keep it under 4000 RPM.