All I know is that circa 1997, chevy made some durable stuff. Watched a 97 1500 p/u get roasted yesterday...it took a GOOD 3-4 min or so at WOT for that thing to seize, and oh boy the noises coming out of it. The kid roasting the engines then did a late 80`s Bronco...20 seconds tops, I was dissapointed,lol.