Engine builder questions

Interesting concept.

Custom pistons would be required. Also, the 360 crank would need it's main journal diameter reduced. Don't most current NASCAR efforts use the 3.0" stroke crank? So they may not be too hard to find "lightly used".

I think 1.88 valves will fit the 273 bore, but 2.02 require notching. I'm a big valve proponent, but once you get into bore notching shrouding puts gains from larger valves are in the realm of diminishing returns. As for the 1.92's, the swap to an aftermarket Magnum pattern head would have enough other benefits to be worth it even if notching was required.

This engine would probably have more low to mid range grunt than a 5.0 Ford, but probably lose when it comes to all out horsepower. In the right chassis, this may not be a big disadvantage in Solo competition.