REGAL Electric fans worth it on stock engine?

[Supercharged111]

I vote electric because, as pointed out earlier, they move more air at a standstill. If you have AC, it won't heat up when you stop with good efans.

 

[57 Handyman]

Update: The other day, I bit the bullet and removed the clutch fan and shroud from my '87 El Camino with stock 305 and 2004r. The plan has always been to replace the clutch fan with an electric dual fan setup from an 2000 Camaro. With the shroud removed, I dropped the efans in for a test fit and secured the top with a radiator retainer from an '87 442. I still have to install relays and wiring.

 

[303'505rollin]

Update: The other day, I bit the bullet and removed the clutch fan and shroud from my '87 El Camino with stock 305 and 2004r. The plan has always been to replace the clutch fan with an electric dual fan setup from an 2000 Camaro. With the shroud removed, I dropped the efans in for a test fit and secured the top with a radiator retainer from an '87 442. I still have to install relays and wiring. View attachment 162886 View attachment 162887

What relays are you going to use? I got a set of fans from a 2000 Malibu they look the same as yours

 

[57 Handyman]

I just ordered a Painless dual electric fan relay kit from Summit. Initially, I had planned to do the wiring myself with a set of 20 amp relays purchased 2 years ago at the Hot August Nights swap meet...but couldn't find them in my garage. When I get the relay kit and complete the installation, I'll update this thread.

 

[1320John$$$]

I have this 1986 IROC fan on my 85MC for 20 plus years was almost a bolt in some of the shroud holes lined up with the Monte Carlo ones so I didn’t have to drill them I did have to add aluminum flashing around the fan so it would pull all the air through the radiator without the flashing it didn’t run hot I use a painless relay and sending to turn the fan on and off and it works flawless I’ve gone through two relays in the last 20 some years Your pick up a little in ET and fuel mileage with the electric fan don’t be afraid to go to the junkyard and convert something to make it work be creative

 

[Supercharged111]

While the flashing may help draw more air across the radiator at a standstill (I bet it's negligible at best), it will block airflow at speed. I ditched the stock duals off of my C5 Corvette for a large single Spal fan and the temps went from 194 to 187 at speed. At a standstill it draws more air than stock over a smaller area. The car never gets hot and the AC still blows ice cold.

 

[1320John$$$]

While the flashing may help draw more air across the radiator at a standstill (I bet it's negligible at best), it will block airflow at speed. I ditched the stock duals off of my C5 Corvette for a large single Spal fan and the temps went from 194 to 187 at speed. At a standstill it draws more air than stock over a smaller area. The car never gets hot and the AC still blows ice cold.

At speed it doesn’t get hot enough for the fan to even run maybe I got lucky

 

[Supercharged111]

At speed it doesn’t get hot enough for the fan to even run maybe I got lucky

By design the fan shouldn't need to run with the vehicle at speed. The efan cannot flow anywhere close to the amount of air that is moved at speed. This is why factory calibrations turn the fans off around 30-40mph.

 

[1320John$$$]

By design the fan shouldn't need to run with the vehicle at speed. The efan cannot flow anywhere close to the amount of air that is moved at speed. This is why factory calibrations turn the fans off around 30-40mph.

Well if it’s overheating like you say then the temp center she turn the fans on and they will run whether I’m at speed or not

 

[Supercharged111]

Well if it’s overheating like you say then the temp center she turn the fans on and they will run whether I’m at speed or not

For an aftermarket setup, yes. I was merely offering up the manufacturer's logic with respect to airflow vs speed. If you're overheating at speed and the fan comes on, you're not going to stop overheating.