No two steps, lite pistons, NO detonation--perfect tune up and they will run until you retire
I have only had two broke 440 steels in 25 years of racing, building etc
They are amazing units--the customers that broke them could have broken an anvil I have bought piles of them and had about 1/2 dozen not mag good but who knows where or how they had been used before that point--they were really well made units compared to everything else Mopar made Those and 727's are Mopars claim to fame IMO