|
Yeah, there are heavier I4s than the LSx. The Miata also doesn't get very good mileage, I've heard of people with C5 Corvettes getting closer to 40 (supposedly) while the few people with 1st generation Miata (1.8s) I've known only got in the high 20's—the gearing sucks and the aero is worse than the Corvette. Weight doesn't matter as much once at speed. That said, I'm sure a Miata could get into the 30's if driven like an old lady, but that's not impressive whereas a 5.7 liter engine doing that is. On the other hand, there's probably not much more to gain from a Corvette without changing the drivetrain out, while a Miata with RX-7 gears and a drastically reduced CDa could get into the 70s by my calculations (though my design would then be a single seater).
|