I believe I already addressed/corrected that misconception in the second post of this thread. I keep hearing that, but I also keep finding articles (both "on the Web" and in print) that claim otherwise. I'd guess it's because I look upon a "street" motor as just that - an engine that mostly spins on the street. My Gran was a daily driver until I bought the F100; and then it was still driven more than the truck. That was mostly because it was easier on gas and had generally better "street manners"; especially after the pickup got its 406. Yup - I must have missed the post where that (the insane core-shift problem) was mentioned; because I would have refuted it. Oh, wait a minute; I do remember Bryan saying something about it; and I told him I must have been incredibly lucky. I'm almost thinking that Cleveland core-shift issues are like the trouble with "before late-2003" 5.4 cammer motors spitting out plugs - it's a bad problem when (which isn't all the often) it happens. If I suddenly hear a big BANG and my F150 starts smelling like a gasoline fire; I'll probably be singing a different tune, but 'til then "it's all good". Agreed.