Join Date: Nov 2000
Location: Bay Springs, MS USA
I've read numerous posts concerning the cooling of 500+ hp big blocks. I have mild 454 in my 69 RS that I'm sure won't be one of these big hp makers. According to my desktop dyno, the rat makes about 510 hp, but I just can's see it. It's basically a .030 over 454 with 396 heads, a lunati hydraulic cam, Victor Jr. intake, 750 Holley dp and large tube headers. Ok, on to the question......I'm still using the stock 3 core radiator with a flex fan and no shroud. I don't have a million dollars to spend, but I don't want to overheat the beast either. I was thinking of purchasing a clutch type fan and a shroud. Do you guys think this would be efficient? Should I just save my money and opt for a Be-Cool or Griffin and electric fans? I won't be going on any power tours, but I would love to be able to take a Sunday drive in the Mississippi heat without having to worry about overheating. Any and all advice will be greatly appreciated.