Early 70's. 383 circle track car. Stock rods w/arp rod bolts, General Kinetics solid cam, oil restricted to cam bearings and left side lifter gallery, double pick up oiling system. Believe me the lifter galleries can be a big source of oil leakage, you don't have to block it off just slip a piece of allen wrench into the feed hole. Turned this engine 7200 to 7800 rpm's twice every lap for 3 years with same rod and main bearings. It can be done. I know the question was for a stock 383, just thought I'd throw this in here.