At a swap yesterday, I was talking to a guy trying to sell numerous sets of 333 truck heads. He began to show my why the 333 head produces more low end torque than other heads. There are a number of round angled castings in the floor of the intake runners and if you feel them, they are angled up at the edge to cause turbulance and keep the gas from puddling at low speeds. I have no other heads to compare this to, but they are indeed on my 333 heads also. Are they on any or all W heads? About the size of a pencil eraser. If you have heads handy, please take a look, hard to see but you can feel them. Kind of interesting talking to guys at swaps with an agenda to sell something. I would like to know if they are only on the 333 head. THANKS
