You’re looking at that sweet spot where heat doesn’t make the engine quit on you, right? First off, lock the torque curve down. Hit that mid‑range sweet spot, because a tank is never sprinting, it’s dragging that weight. If you keep the torque high through the first 2500 RPM, you’re not just moving the crew—you’re giving the engine breathing room. Now the intake: it’s the engine’s lungs. If you can clean up the air path, you give the combustion a better match for the fuel, so you don’t overheat. Think a high‑flow throttle body, a bit more venturi size, and a properly tuned resonator to keep the pressure waves in check. Keep the carburetor or throttle body set to a leaner mix at higher RPMs, but don’t push it so lean that you start knocking under load. In short: shape the torque curve first, then fine‑tune the intake for endurance. Keep the heat under control, keep the torque up, and the tank will run like a well‑tuned beast.