I bought a 69 Roadrunner (383 4brl) no AC. It had an electric cooling fan that was inop. I want to replace it with the origional type but am not sure if I need a clutched fan or one that bolts directly to the water pump without a thermodrive clutch? Anyone got any idea?

Thanks

 

mechanical. e fans are nice though

 

When you say mechanical do you mean clutched or directly bolted to the water pump?

 

f -

I don't recall if the direct bolt on or clutch fan is year appropriate for you car, but if you have a choice, go with the clutch. There are some new models in Summit's catalog that will do the job nicely.

There's an ongoing debate over what's the most efficient (parasitic drag and flow wise), a clutch fan or an electric fan but both are fine. I use a huge flex fan for increased flow, but I'm not racing any more and it looks and sounds cool ... actually it cools pretty darn well too, even though it might be the least efficient.

Archer

 

http://www.summitracing.com/parts/dcc-4120758
Here you go...

 

i mean a bolt right to the pully no clutch. i dont care for clutch fans. i much rathetr wire up to big e fans or a mechanical

 

The 1969 Roadrunner with a 383 had come with a Clutch fan combination, but slad is right my 440, 383, and 318 all have e-fans why give up the HP when you don't need to?

The best thing is it is your baby, do it your way.

 

I would vote for the electric fan as well. I had a '67 Plymouth Belvedere with a 440 shoe horned down in it that had both a clutch and the electric and I could tell a significant difference when I flipped the switch on the electric.

 

I would lean towards electric over non clutch type...On some of the cars you will have to use a thin line electric fan so take a measurement from the radiator to the water pump pulley and buy accordingly. Or you could make it a pusher fan if you have the room...Bill

 

This is the one I run on my 360. powered dodge pick up

 

What ever you decide on USE a shroud

 

Sounds like the e-fan is the way to go. Simple, clean and an extra horse or two . Not a bad deal. This was a big help.

 

f -

Good idea. Just remember the extra wiring, sensor and/or switch, and new brackets (don't use the through the radiator vents mount). Other than that, they are fine.

Oh, and you may save as much as 15 hp, unless you consider the fact that the alternator is working harder.

See why I'm still using a flex fan?

Seriously, for performance it's the way to go, and it's a cheap lunch, not a free one.

Archer