[patrickt]

On the next "dyno day" of the Capital Area Cobra Club I'll put mine on the dyno and run it with both the pan on and the pan off and see what the results turn out to be, both with a big fan on the front of the scoop and without. I did a quick search of the forum and didn't find a definitive thread where somebody dyno'd their engine, pulled the pan, and then re-dyno'd. Probably because it's such a nuisance to pull the pan if it's not a two-piece. All the threads quote the dogma that the pan tends to hurt more than it helps, but none cite any real tests or evidence, just the usual "all the engine builders say that blah, blah...."