I would also caution all of you reading magazines out there that when they say a motor like that runs on pump gas, they are both lying and telling you the truth. When you are dealing with EFI and computer engine management, you can indeed run pump gas "around town" as you actually have a 8.5:1 motor. With the computer and EFI, you limit the injector pulse width and timing and its a normal motor. When it comes track time, I will guarantee that the street gas is drained and that at least 116 Octane is added for big boost numbers.
Rodney Butler's motor in the PE article was dyno tested on pump gas and then on race gas. Look at the differences in power. I think he made around 1000 HP on pump gas (low boost, aluminum heads). 2200 HP on race gas!
Chance favors the prepared mind.
|