The dyno numbers are uncorrected 83 deg F 33% humidity elevation 103 ft max hp at 4500 rpm max torque 3750 No the dyno guy didn't tune it, just fluids Air fuel line is almost flat after 3k rpm at 13.5
From the power peak RPMs, it looks like the cam is fairly small, or may even be a stock cam? A larger cam should help reduce the fuel octane requirement and add some power. With aftermarket Aluminum heads and the larger cam (plus intake and carb), you can get that extra 75 hp pretty easely, and it will tolerate lower octane fuel.
