383 Rev Limit question

First off, 2.5" is WAY enough for a 383 built how you describe. That size exhaust will flow 600 HP and do it well. Unless that exhaust system is just JUNK, I wouldn't worry about it. 2.5" is fine. You have a bit of a mismatch with those heads in the mix, though. That 509 cam is a BIG hydraulic. That cam, Team G and 85O wanna flow WAY more than those heads can take. LOL You put some ported Eddys on that thing and it'll be just a beast of a 383. I take for granted you have headers? You didn't say unless I missed it.