Again correct me if I am wrong but I believe the cam won't cause the foaming issue due to the lack of the counter balance weights. In all of the discussions from the automotive engineers I have read they always stated that this is the reason for it happening, that the crank weight have the flat edge going into the oil, and too much cause it not to just "glance" through it, but actually begin beating it like a blender, causing it to foam. Since this is not the case in the Corvair, it should be okay at the level you are speaking of, and Mark L confirms. This is good information for all the Corvair guys running stock pans (I know Bill Clapp is).
Colin crain...@cfl.rr.com http://kr-builder.org/Colin/index.html KR2(td) N96TA Sanford, FL Apex Lending, Inc. 407-323-6960 (p) 407-557-3260 (f) crai...@apexlending.com