I would say that back in the day the early blown nitro 392 hemi's were all around the 700-1200 hp mark ?? So they survived but lots let go as well just like a stock block 440 at 1000 hp is today, it will hang together for this ????? long.
FWIW,
I have a cast crank 440 that has well over 150 nitrous passes on it, it has 2 sleeves, 7 trw pistons, 1 manley piston that I shaped myself, ran a best of 9.69 and will not die, I think its a crossed fingers thing
