More specifics needed.
What position is your throttle in when it happens? 1/4, 1/2, 3/4, WOT?
Does it hesitate when you whack the throttle, or as you're cruising at a steady speed?
Does it stutter or backfire when it does this?
What octane gas are you running?
Got any good beer in TN outside of Memphis?

A word to the wise is not necessary. It is the stupid ones who need the advice. Pat