Originally posted by stepside454
if your wanting more low end yes, a 4-hole. How thick? cant say itll very from 1 engine to another. basically the way it works is, it decreaseses the plenum volume boosting the signal, so the engine reacts like it has a smaller carb. smaller carbs generally give more low end & thoratle response. I asked you before & you never answered.... what max RPM do you run this motor ?. John
Sorry to instrude with my own questions....
I have been wondering if you can go the opposite way, and make the carb seem bigger to the engine with a open spacer..?