Someone here said that the 68-71 340
Made 320 hp, as told to him by a mopar engineer, however I also saw an article where a completely stock one had just over 300hp. I more inclined to believe 320 as the small block 350 Chevy rated at 300 hp didn’t have the compression, big valves, or better camshaft, intake that the 340 had.
A stock 360 magnum with a good intake, headers and good carb has been dialing in at 310-320 hp with a tiny cam and valve springs that are all done at 5000
