Since i have bored my engine .060 over, and had a valve job with shims installed to tighten the springs, i have to say i am quite impressed with the abuse my engine takes from me, i lay on the throttle ALL the time, even bounce off the rev limiter for a good 20-30 seconds at a time, and my engine stays strong without budging, MONTHS have gone by where people say "your gonna blow that engine", im not bragging about it, but rather astonished by this engines ability to withstand the hell i give it... and have to say dodge made a mistake by producing a base model 5 speed truck which ended up being rather durable...