Most were hyp. if not cast. What really takes a beating are the rod caps & bolts, especially if the pistons are heavy. I pulled apart a factory 440 that had a stock bottom end, it had several 175 shot passes on it, when i tore it done, the caps slipped right off the rods.
Not saying the rest of the lower end didn't feel the effects. The mains slipped right out also., I'm sure it needed align bored. But the cylinders & pistons & rings all showed normal wear.
