i got 20 months or so out of my 440/505 with 7.1 rods. Daily driver , interstate and raced a lot. I season foot brake 1 season trans brake . My machinest said he knew it would split but that was a little earlier than he expected .
I wont go stock block stroker again . I lucked out finding a new in box World iron block . The extea 90lbs hmmm
Tex