Thanks for all your replies, I appreciate it! As for the fan, it's a Black magic 150. I think it's supposed to be good for up to 250hp.
I'm going to upgrade to a 3300cfm. Does anyone recommend for it to be a pusher, or a puller? About the flush, it's a new radiator, so I think that's not it. Well, I'm gonna swap out the fan and hope that solves the problem. In the mean time, if there are any more suggestions....feel free!Thanx again!