I have a 502 BBC in a 82 Monte carlo that runs very good but when I run it up into the 6500 rpm range down the strip it sprays a little mist of oil along the passenger side frame rail and inner fender cover and on anything else in the area. I checked the exhaust mounted evac system and everything else that I could think of and I could not pinpoint the problem. It uses no oil at all and when I'm crusing, (I cruse a lot) this does not happen. Can anyone give me some idea of what's going on?