ok, i got my z28 back yesterday, with new opti, plugs, wires, msd coil, waterpump, head gaskets, 02 sensor, temp sending unit, and a test pipe.

if i rev the car, it hesitates for a second before the rev, if im driving and put the pedal down hard, it waits a second, and everyonce in a while i hear a pop through what sounds like the airbox.

before i had this work done, i got a walbro 255 fuel pump, and clutch. what could this be? its kind of annoying but if it doesnt mean anything bad, i can live with it, next month i leave for basic training so its not a huge deal.

thanks for the help.