[pharmd]

I will have the 800hp Griffin radiator, stock fans, and currently have an Meizere electric water pump. I think most of you guys would agree for HPDE and even Autox the EWP has to go. So if I go back to my stock water pump, will the upgraded radiator be enough to ensure adequate cooling? Is their a nicer pump that I should look into (something cost effective)?

[Rampant]

When I had my 412 Ls2 I had the Mezier electric pump and it was great for the street and kept the car cool in traffic. If I recall it spins at the equivalent of 4500 rpm all the time, but when I was at 7000rpm I would over heat real fast. I would pass 220 in under 3 minute. The rad was a Be Cool. It worked fine for autocross. That motor made 519rwhp.

I now have a Ron Davis Rad, with a Ron Davis Water too oil cooler. The pump is an Evans. Not sure if they even make them anymore, but it seemed to work pretty well with the new larger 455 LS7. I also use Evans coolant at 3psi.

I like the mechanical pumps better even if it costs you a few hp.