Since Andy will have both the TF 240 and 270 on hand, maybe if he's looking for something to test, he could do that very test.
Swap only the heads and manifold and see just how it shakes out.
That is the plan but no guarantee that it will actually happen. It takes a lot of time (and money) to do a back to back head swap on the dyno.
I don't think the torque peak would move up a huge amount if the cam and carb stay the same. The torque peak could move up more if the cam is made bigger. At some point the engine might want bigger headers too. I think changing the head cross section by 25% starts a whole domino string.
