355 tbi-not running right-go to carb set up?
I have a chevy 355 tbi,420-442 cam,holley 670 tbi,hot chip,400 turbo tranny,373 posi.Runs great up to 3000 rpm,then it starts breaking up.Everything is new,dist,wires,fuel pump,tbi,plugs,engine.Anybody got a suggestion other than a dyno?