That's awesome! That vette I mentioned has a good sized cam with some real overlap, and that is hard to squeeze the mileage out of on these cars. Timing is as important as the [obviously] lean mixture to get solid mileage without being on the edge of knock. If it were stock motor and turbo (not belt driven SC) it could have done a bit better as well.
Adrenaline dyno wars pt.2 Gas wars
Yeah, doesn't sound so badass
