So tomorrow I should have in my garage a very nice 80 Z28, Dirty etc. The one thing I always do before messing with a new project is spray the entire non painted part of the car down with wd-40. I do this religiously, when engine is warm I do it and cold. I spray the entire rear axle undercarriage etc. I do high pressure wash it but it always leaves with wd-40 on it afterwards. it makes for a cleaner car, losens dirt and grime and stop rusting. Revving your engine. Dont do it. There is a reason modern motors will not let you free rev your motor past 3000 rpm. My srt8 will not rev past . Our motors were designed to have a load on them, thus we have thrust bearings etc. Dont do it. it will destroy most stock motors quickly.