427 runs too hot

[vettestr]

Add me too the list. It fixed my heating issues but make sure you have a good charging system to make everything work properly.

Quote from Bill B. " Many heating problems solved using a ford Taurus fan , two speed with appropriate wiring set up. "

[Dwight]

what is the cfm of the fan?

what do you call overheating?

Several of us are using 2700 and 3000 cfm fans without shrouds with no overheating problems.

I have a small block 354 with 10.7 cr. I run a 195 t-stat and my fan comes on at 205. When I'm sitting at a long red light it will climb to 210 and hold. Fan will kick on and bring it down.

Coach has a 428/461 c.i. KC motor, 3000 cfm fan set to come on at 185. Never gets to 205.
Lainhart has a 487 KC motor with a fan shroud. No overheating problem, it will sit and idle for 35 minutes, no problem.
Both of these KC motors are 9 to 9.5 compression motor with over 600 hp.

The more hp you make, the more heat. Higher compression, more heat.

We have changed our March overdrive pulleys to standard size pulleys. That got rid of the idle overheating and alternater not charging problems.

And my favorite, to much anti-freeze! Never more than 50% but we run 25 to 30% because when it's below 40 degrees our Cobras are inside the garage, nice and warm.
Dwight

[jhv48]

Shroud it first, then, if still overheats, look at the cfm of the fans next.

[jojoegen]

Thanks guys.The cfm is 3000 chrome zirgo "s" blades 16",50/50 mixture.This is a show car.all chrome engine.Temp will hit 190 ,fan comes on and it will clime to 230 and keep climing.I don,t want it to go any higher so I shut it down and let the fan cool it off.the sides of the radiator are kinda open in other words the rad. is not enclosed top ,sides in the front of the rad.

[BAsque1]

Welcome to the wonderful world of FE nuanses; I have a very similar problem, however, I do not consider it overheating because the highest my car goes is perhaps 220 in idle traffic. Open road stays 180 steady. The problem that this has been causing is vapor lock and gas boil in the carb bowls. I had to adjust the float levels for they were to low and staved for gas. This is still being tested. As the summer goes along I willpost results. I suggest that you add a full bottle of water wetter, it helps a lot to keep the water temp low. The 50-50 mixture of coolant is also wise. You might want to check what kind of thermostat you have, you might have a winter thermostat vs summer.
Hope this helps
Cheers
Lou