Dynamic Compression and Aluminum Heads?

Heat transfer to the head and cylinder walls has a measurable effect on power only at really low RPM, around 2500 max. Above that the cycles are happening too fast; before the hot burned gases have time to heat up the head they're on the way out the exhaust and a much colder unburned mixture is flowing into the cylinder.

If you're building a truck engine for towing heavy loads I think it would make a difference but there are still many other bigger factors at play.