Here is a chart from my last round of 470 testing. This is with the Trick Flow 270 heads and the 264/268 roller cam. Flat top pistons, unleaded premium gas, Dominator carb, locked timing curve. There might be a hole in the torque curve below 4000 but from 4000 up it looks pretty smooth. With this engine we don't pull it below 4000 so I'm not sure what the torque curve looks like down there. Might not be a ton of torque down low since the cam is pretty big for the compression ratio.