[Gator67]

The factory style clutch fan and shroud keeps the 535 in my 70 Formula cool, even with A/C on in Phoenix. However, on my latest 2nd gen bird project I'm going to run an electric fan set-up to cool a stroked LQ4...with the air intake tube, radiator hose, etc., just not enough room for conventional cooling fan, and a conventional fan would have ended up in an odd spot. The set-up I'll be running consists of two brushless SPAL 12" fans in a 3.5" thick shroud with two sets of reliefs/flaps. I like the idea of being able to run PWM controlled by the Terminator Max ECU, and the fans are very powerful, but I'm a little nervous that it won't keep up. Friends here in town have not luck with 2 x 12's, but those set-ups typically consist of weaker brushed fans which are wired so that they're either on or off (or one or both are on and off), and are installed in thin shrouds without any reliefs/flaps. To make those deals work, they have to use 14" or 16" fans, which, unfortunately, create additional packaging challenges (e.g., interference with steering box). I'm still a couple months away from the first start up...will report back.