Quote Originally Posted by Show&Go View Post
OK MAXX because you are ROCKING SOME SUPER technical answers here. And you seem to be on a roll. I haft to ask since I am working toward a turbo. I am only plannin to prob spin up to 6200 RPMs on a 5.3 What size turbo would work best for what I am thinking. Also I was planning a 220-224 Cam with 581/581 on a 115. So by your posts to improve the gas pressure I should get a 224-220 instead? Would this still be a good NA cam till I get the Turbo system. (talking a good 6 months from the next cam swap till the turbo kit) And going back to the post in general by what everyone is said shouldnt how far Drop em runs his motor into higher RPMs play a factor in what cam he needs to run?
For your cam I would stick with your first choice. Just keep the overlap on the conservative side. With the choices of turbos available today there's no need to shorten the exhaust duration. It's much easier to find a properly sized and configured turbo for your engine today than it was in days gone bye.

For the turbo choice, the best advice I can give you is don't listen to someone you don't know on a forum. There's a virtual plethora of choices available. Contact the guys who do this for a living (Garrett, Turbonetics, etc). Tell them what you have, what you want, how you drive, etc, and let them identify your options. It would be time well spent.

As for the OP's issue, as others have pointed out, we don't know enough about his needs to make an accurate determination. I was merely pointing out that the A/R of his unit is intended for higher RPM use. He was vaguely describing a problem and I was offering a suggestion based the the available data. If his turbo is sized appropriately for his engine, then that won't be a problem. Boost just won't come on as fast as, say, a positve displacement blower (which I personally think is a better setup for a street-driven truck).