Go to moparts.com and ask 383man about his son's 400 Dart. Pump gas, .557 MP cam, Eddy heads, very mild, very streetable...11.40 as driven on the street with 3.91's. (Well, with slicks...)
I had a 400 back in the day, (early 80's) and a Duster and no money. I decked the block to get the...