What a freaken punk you are onedragracer, what does 425hp have to do with ET in a 4800lbs truck anyway? It is totally possible to make 425 hp with a 383 sbc, and be a mild motor. I had the same situation happen to me when a punk claimed that a 406 (pump gas flat tappet) I built would never run inthe 6sec range in the 1/8th. He and his little boys showed up to see it run because I claimed it should run solid in the 6 sec. Well the first few runs it didnt and they all carried on and laughed. I found a small problem with number seven rocker and repaired it (it backed off adjustment) and it proceded to run a 6:76. They were all gone before I got back to the trailer! They thought they knew everything to! I figure they saved themselves a thrashing from me. I guess the moral of the story is keep your flap shut and you may learn something! Well if your pride lets you anyway.