383 with 400 HP 3/4 stroker engine has a 3.750 stroke where a 350 Chevy has a 3.500 stroke which delivers an extremely high amounts of torque, you have to experience one to know how it feels. This is defiantly the way to go when you are building a 350 based engine "Stroke it once and your hooked." This engine package is what most of our customers prefer when building their hot rod.