Here's some info on using the Ford Contour set up. The fan I actually use is a Dorman reproduction, 620-104. I run that with a Dakota Digital controller, PAC 2750. I use them with a Champion 26", 3 core radiator and a GMB high volume water pump. I use a standard 180* thermostat (not a high flow). I also have a 100 amp alternator and run the fans off of dual relays. Mine's for a 340, but it's .060" over with 9.8:1 compression, all iron, and puts out somewhere around 400 hp so it's not the easiest thing to cool.
My "new" '74 Duster- or why I need a project like a hole in the head
View attachment 1715187788
And if I did this right, the PDF goldduster318 made should be attached at the bottom of my post.
Sure, but they also all used larger radiators, most used larger mechanical fans (except the ones that were already using the HD fans), and a different fan to crankshaft ratio. The AC cars used a 1.3:1 or 1.4:1 fan to crank ratio instead of the standard .95:1, so, the impeller was spinning faster. Do you know how the output of the smaller impeller spinning at a 1.3:1 ratio compares to the larger impeller at .95:1?