young, broke and stupid 440 build

I've got a 440 that we built in the early 90s and it was turned 7300 rpm with bushed polished stock rods, I always worried about the rods so I replaced them the last time I refreshed the motor with H beam rods, now with the cam I have in the motor I only turn it 6700 rpm and I still worry about the new H beam rods. Lol