Ma Mopar put a crank windage tray in every 340 they built, and they still had a full factory warranty on every motor that went out the door. I agree that modern cams are far more aggressive than the cams back then, but Mother Mopar wouldn't have spent the money to install it without a cost/performance comparison. I'm putting a windage tray in my current stroker build with a solid roller cam. I'll listen to my inner voice, and the performance of my stock 1970 340. I'm building a high performance street car, not a pro stock motor.