[BobFmTyler]

I'm planning on putting electric fans on a Big Block 69. With the fans in front of the radiator, is there and need to use a shroud behind the fan?

Thanks in advance.

 

[Kirk's67SS]

Why in Front ?
That would be a BIG NONO
As the Efans would Block more Air Flow than they could produce to Cool the Coolant in the Rad Core down

9 Rules for Improving Engine Cooling System Capability...

This might be a good read and/ for a Sticky for the H&C Forum https://www.enginebasics.com/Engine%20Basics%20Root%20Folder/Engine%20Cooling.html 9 Rules for Improving Engine Cooling System Capability in High-Perf Autos Produced by the National Automotive Radiator Association (NARSA) and by...

www.chevelles.com

 

[Capt Casey]

The electric fans should have their own shrouds and yes the more directional the air flow the better. so shroud it up from the engine side of the rad...Thinking that is what you meant but that is the rear/back of the rad. The fans will pull the air through the radiator while car is stationary or moving slow. thermostat will shut the fans off when cool enough. Careful though if in a hot climate they fans can run a long time after engine shut down if thermostat not adjusted correctly or if wired to keep running. I haven't set these up but went through the choices and stayed stock with a thicker radiator.

Do your research before spending the cash...you can get some good deals on that stuff right now or there are some really nice used units that members might be parting with due to engine swaps or upgrades...?

 

[Kirk's67SS]

Here is a Pic of the Front/Grill Side of my Car's Small Down Flow Rad

Just a Trans Cooler in Front down Low and Away from the Core

Back Side/Engine Side of the Rad with the Efan/Shroud on it

SPAL Dual 11" Efans with Rubber Flaps on the Shroud

You having a 69 Chevelle means you could put a Dual 12" or 13" Efan/Shroud Unit on it
depending on the Width/Height of the Rad Core

 

[shovelrick]

I have dual 12" Derale Efans but no shroud but I realize I do need one

 

[BobFmTyler]

Thank you all, that was most helpful.

 

[fauxrs]

My friend Jeff Smith wrote up this article for the setup I installed in my Big Block El Camino. I'm installing the exact same fan in a LS swap 67 chevelle we are working on.