Well there you go. Hone the 413 with torque plates, file to fit Speed Pro rings, new bearings, high pressure oil pump relief spring, polish the crank, good oil pan and pickup, windage tray, 280 duration .450-.500 lift cam, valve springs, double roller timing chain, stainless exhaust valves, good valve job, good intake and at least a 750 cfm carb, recore the radiator with a 3 row core. Probably at least 400 hp and 500 ftlb of torque in a 3,400 lb car. Live forever. Enjoy!
