[dscott]

That's the ticket! I use the 26x19 GM Griffin. For engines up to about 400hp I use the Spal 16" fan, for higher hp I use the Spal dual 11" setup with relays on either fan. I have used the dual setup on engines up to 900hp (blown 440 in a Cuda) and the cars will run all day @ 180 degrees. I have found no other fans that will cool like the Spal, it's the best on the market. I have a stack of other brands on my shelf that wouldn't work. Keep in mind if your car doesn't cool when you are stopped or in slow traffic but does cool going down the road, 99% of the time it's the fan. You don't need a fan when running @ 50 or 60 mph because of the airflow through the radiator. The fan should be able to keep the engine cool at idle forever. Most fans on the market are for auxillary cooling not primary cooling. That is the main difference between the Spal and the rest. Many of the fans that claim a certain CFM rating aren't even close. We tested 4 fans that were all rated @ 2000 CFM and 3 were actually about 800 CFM, the Spal was about 1800 CFM. We tested them @ a car show a few years ago with a company that had a setup for testing air movement. I have yet to have a car overheat with the Griffin and Spal setup.
Don