I've actually had good luck with small pancake cooling fans off of ATV or something - SPAL makes a 4" and a 5" that move a fair bit of air. They're also thinner, so you can often move the heater box closer to the firewall (depending on your model of heater) and while I never needed a two-speed, I'm sure you could run a 2-speed switch (the kind that has a resistor)...

 

Hey Greg, I did the same years ago. The 6 v motor really blew air. Lasted almost thru the first winter before it burned the windings.

 

I use 6v heater fans all the time with a resistor network to lower the current. So far no failures. This is a basic schematic for a GM resistor pack, I just eliminate the direct high speed line by cutting the connection that does not go through the resistors. so with this setup I would end up using the middle two positions and either end would be OFF. I have a whole write up with diagrams and pictures in the truck #2 build thread, check out post #255, link is in my signature.

 

Sorry to rehash this but has anyone figured out a parts store replacement heater motor replacement for these trucks. Again, the VDO PM351 fits but it's a 2 wire- one speed and stop -motor. It needs to be a 3 wire- hi speed-low speed- off. I hear some mention of Ford Falcon fitting but maybe we can get some feedback on this?

 

Did you try a 2 speed switch?
I have this one on order from an ebay vendor because I am replacing the 6v with the recommended VDO motor. My '53 came with the fresh air heater with a 2 speed switch. My switch is bad.

https://www.ebay.com/itm/COLE-HERSEE...53.m2749.l2649

 

I picked up a 2 speed blower motor from my local auto parts store...I believe it was made by Everco...I can check tonight if needed.

 

This seems to be a pretty commonly asked question with no concrete answer- so any help is good!

 

This application does work. I have one that was sourced from O'Reillys Auto parts in 09' in my 55. No issues. At the time it was less than $30. I hope this helps

 

Was yours a two wire motor or 3 wire. Rock Auto shows a vdo pm351- which is a two wire (single speed) motor.

 

It is two wire

 

Then it's a single speed isn't it?

 

2 wire will be a single speed. Need 3 wires for 2 speed. I checked what I have installed, but the way it is mounted I can't see the tag to get a part number off it.

 

We're getting close!

 

Update. Switch arrived today. The VDO 2 wire motor combined with Cole-Hersee switch gives you a 2 speed heater blower. The switch fits in the original location and accepts the original ****. The ceramic cylinder that encases the resistor coil does get hot on low speed. Probably why later model Fords including Mustangs, with the 2 wire motors, had the resistor coils moved into the blower housing were the fan could move air across them?

 

I do appreciate the two speed switch option but a lot of guys are wondering about getting a correct type two speed heater motor. Someone has to have some good info on this!