small block valley pan

hi, they don't do much for windage. they are to help keep hot oil off bottom of manifold and to keep lifters in bores in case of a valve train problem. that is their main function. any time you can insulate heat from intake, there is a power gain. I use them, has saved my motor one time. just food forthought.
a cam will splash oil this will help it to fall back down on the lobes and lifters.