Your welcome , I’m not 100% sure but I’m pretty positive. Ive read it somewhere on here I’m pretty sure. If a dyno tune isn’t in your budget though and you would rather tune it than not I’d go black bear.
If I got a 383 I would have to drive it like that temp. Lol if I got a tune I want the truck done. So ride hight, Engine, trans, and 373 rear end. But for sure I would want a tune. I hear a lot of request for black bear, and pay to keep the old ecm. That would be so awesome. Man I wish I could get it done by christmas