diesel_lv
Well-Known Member
I've seen ads and I've seen posts where people say that their electric fans keep their engine cool "even" in 90° heat. For reference, 90° is not hot. We always say "my 600hp engine is cooled by 'x'". When we are driving, we are driving a typically higher compression engine but using only about 200hp. So the blower, turbo, etc... don't make our engines hotter while city cruising and interstate cruising. It take a slant 6 the same hp to propel a '67 Coronet 80mph as is does a blown hemi.
My 496 w mechanical fan, factory shroud, 2 row aluminum 26" radiator, flowkooler w/p, 70/30 coolant w 2 bottles of Water Wetter and 180° t-stat runs 174° on interstate in 120° temps and 161° in 95° temps. 196° in stop n go traffic in 120° and 185° in 95°.
3 different dual fan setups have been tried all did well in stop n go but as soon as over 45mph they started getting hot and at interstate speeds were hitting 225° n climbing fast. Cut slots/ports w rubber flaps in the shrouds and all still did the same. They seem to cause a high pressure area in front of the radiator due to their smaller openings, including the slots, which prevents enough air from going through. Yes, factory cars nowadays have e-fans and stay cool in 125° weather. Those fan/shroud setups were designed for those cars, molded plastic w large enough openings to allow enough air to cool the engine down to 200-220. That is the normal operating temp of modern engines w e-fans.
Moral of the story, if you're going to cool an engine in a hot, 120°, environment, what works for that blown hemi, twin turbo'd 512 in 90° weather, doesn’t necessarily mean it will work for your stock 383/440 in 120°.
My 496 w mechanical fan, factory shroud, 2 row aluminum 26" radiator, flowkooler w/p, 70/30 coolant w 2 bottles of Water Wetter and 180° t-stat runs 174° on interstate in 120° temps and 161° in 95° temps. 196° in stop n go traffic in 120° and 185° in 95°.
3 different dual fan setups have been tried all did well in stop n go but as soon as over 45mph they started getting hot and at interstate speeds were hitting 225° n climbing fast. Cut slots/ports w rubber flaps in the shrouds and all still did the same. They seem to cause a high pressure area in front of the radiator due to their smaller openings, including the slots, which prevents enough air from going through. Yes, factory cars nowadays have e-fans and stay cool in 125° weather. Those fan/shroud setups were designed for those cars, molded plastic w large enough openings to allow enough air to cool the engine down to 200-220. That is the normal operating temp of modern engines w e-fans.
Moral of the story, if you're going to cool an engine in a hot, 120°, environment, what works for that blown hemi, twin turbo'd 512 in 90° weather, doesn’t necessarily mean it will work for your stock 383/440 in 120°.
