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As I was searching through some Cummins swap builds the other day, I saw where somebody used a a blower motor and fan from a newer vehicle to increase air flow. I can't find it now that I want to though.
The old one kept up decent considering that I had no headliner and really bad window weather stripping. Since it's dead, I would like to put something better in. (That's just the way I am.)
I understand where you are coming from. What I am trying to convey to you is the heater core and fan are engineered to work together. Putting a larger fan in could blow the heat off the core and it not provide hot air for the fan to blow.
Sealing the air leaks can be a better move allowing a factory setup to work at max efficiency.
Hey I hope you can ride til you sweat this winter.
I understand where you are coming from. What I am trying to convey to you is the heater core and fan are engineered to work together. Putting a larger fan in could blow the heat off the core and it not provide hot air for the fan to blow.
Sealing the air leaks can be a better move allowing a factory setup to work at max efficiency.
Hey I hope you can ride til you sweat this winter.
John
With the old one on high I could get 140* air when it was 0* outside. I could put a stock motor in, but that is boring and I like to tinker.
Well I dont know of any other blower motor you could try. If its working right and you have no leaks in your cab it works pretty good the way it is. Like stated above, I can run mine on high for 5 minutes and I have to cut it off or Im sweating.
Maybe a better and cheaper solution would be to replace a stock fan for the dead one and bump up to a hotter thermostat. My old 79 300-6 would run you out of there with every window seal leaking on the highway partially due to a hotter thermostat.
From my research I have deduced that 180* is optimum for performance. There are lots of late '80's fords at the junkyard. I will just have to try it myself.
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