Anybody know much about the 'economy' priced camshafts that are advertised? Do they last? The car will be a weekend toy, will sell it in 2-3 years. Looking to buy one,,,around 450-500 lift and will change lifters also. Can they be installed straight up? Will the lobes wipe away after a few thousand miles ? Do they brake in 99 1/2 pieces if you race it ? This car obviously isn't a 'keeper' but I don't want to buy one of these cams if they are junk.