The Rambler SCs had 360 engines and were fairly stout. I ran a 401 in my 68 AMX drag car for many years and never had any issues. It was a 1971 401 which came from the factory with forged crank and rods, so the bottom end was strong. I believe they only did that for the 1971 production year and then went the cast crank and rods in 1972. My 401 short block was all stock, but with oiling mods. Used the factory 'dog leg' heads which performed pretty well. Everything else was just bolt on goodies. It would run consistent 11.0s all day.