Chevy needs 5.5 liters to make 400 hp, NA.
Chrysler needs 8.4 to make 500, NA.
Ford needs 5.0 to make 420, NA.
All being premium fuel. Although,
on cars.com, they are showing the 8.4 liter is pushing 640 hp, MUCH better than the 499 the old 8.1 was doing, and I only see a 6.2 listed for the Corvette, with 450 or 460. The GT is still at 420. Interesting, to me.