You're an arrogant ignorant little C U Next Tuesday. Age has little to do with it. Had you have came on here without the massive chip on your shoulder and attitude problem there wouldn't have any problems. A little more research on your behalf before saying everyone else was wrong would have benefited you. But no, you had the gull to say there was no aftermarket for a 454 and say the 8.1 was holier than thou.

There's a reason GM dropped production of it. There's a reason why it's either Duramax or 6.0 in an HD truck.