383's are kind of a different breed of cat to build up. A 1/4" bigger bore than a 350 Chevy but a .100 shorter stroke. That doesn't necessarily make them a high rpm engine. The 350's have a 5.7" rod where the 383's have a long 6.36 rod. Kind of a strange combination. Not quite a horsepower engine but more a torque engine. I don't remember too many that were over the top screamers. They ran good stock back in the day though.
