Duramax Diesels Forum Truck of the Week
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Old 02-16-2018, 07:58 PM
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Default Ff Dynamics electric fans

https://ffdynamics.com/products/gmc-stg3. I was browsing around looking for something to spend my tax money on I came across these and never heard alot about them. Anyone have any input?
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Old 02-16-2018, 10:54 PM
Kunz111 Kunz111 is offline
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I’d like to know more about the controller/tuning tool
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Old 02-16-2018, 11:51 PM
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Electric fans have been discussed quite a bit. There doesn't seem to be any spec, air flow rating, amp draw, etc so we don't really know what they can do

In general, it is understood that electric fans don't move as much air as the stock fan. If you ever tow 10k or more then you run a high risk of overheating.

I did a test in my old LB7 a few years back, I ran it with the fan removed. As long as I didn't sit still too long in traffic it wouldn't overheat. Ran like this for about one year. Didn't really tow more than a few thousand pounds and only a handful of times. Didn't notice any increase in average MPG.

Only benefit I liked was it was much quieter, especially in the morning when starting up
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Old 02-17-2018, 01:19 AM
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Sorry I wasn't more specific in my post, I ran the flex a lite fans on my old lb7 for quite a few years. They were worked good but they did leave me stranded once when the controller melted down. I've never used this brand before but the metal shroud caught my eye. I was wondering if anyone use these brand fans or the controllers they have
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01 lb7 red RC/LB 11.58@119 MPH, SOLD
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Old 02-17-2018, 06:50 AM
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http://www.duramaxdiesels.com/forum/...ad.php?t=61870
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Old 02-17-2018, 07:34 AM
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I am happy with the setup and havenít had any issues and itís a very clean looking install . I do not tow anything though. It is street driven and raced.
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Old 02-17-2018, 07:41 AM
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Quote:
Originally Posted by 2004LB7 View Post
Electric fans have been discussed quite a bit. There doesn't seem to be any spec, air flow rating, amp draw, etc so we don't really know what they can do

In general, it is understood that electric fans don't move as much air as the stock fan. If you ever tow 10k or more then you run a high risk of overheating.

I did a test in my old LB7 a few years back, I ran it with the fan removed. As long as I didn't sit still too long in traffic it wouldn't overheat. Ran like this for about one year. Didn't really tow more than a few thousand pounds and only a handful of times. Didn't notice any increase in average MPG.

Only benefit I liked was it was much quieter, especially in the morning when starting up
Donít wanna hijack but curious about running with no fan cause god this thing is loud.
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Old 02-17-2018, 08:30 AM
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Quote:
Originally Posted by prostreeter600 View Post
I am happy with the setup and havenít had any issues and itís a very clean looking install . I do not tow anything though. It is street driven and raced.
I wont be towing either. Just driving and racing. I'm about to remove the hitch/bumper and prob replace with a roll pan. It looks like a clean install and looks alot nicer then the plastic flex a lite fan shroud. What kind of controller comes with it?
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09 lmm ccsb ltz, ATP tuning, mpi s480 over stocker, big dipper trans, 60 overs, 10mm stroker pump, ppe up pipes and manifold, banks intercooler & exhaust, airdog165, isspro guages, traction bars, the list goes on
01 lb7 red RC/LB 11.58@119 MPH, SOLD
01 lb7 Black CC/LB, SOLD
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Old 02-17-2018, 08:41 AM
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It’s been several years since I installed it, I don’t recall the brand but it comes with a probe to stick into the radiator fins near the hose connection and the controller is adjustable. I too preferred to cleaner look of the aluminum shrouds versus the plastic.
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Old 02-17-2018, 10:02 AM
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I had ff dynamics on my lbz never had a problem. The tuning tool is just a tiny screw driver that you can use to adjust when you want the fans to turn on.
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Old 02-17-2018, 02:10 PM
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I have them on my truck, easy to install and well built in my opinion. I told them what power the truck made and what it would be used for and they built a set to fit my needs. Definitely worth the money in my opinion.
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Old 02-17-2018, 02:13 PM
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I like that come with seperate shrouds for each one also.

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HSP Compounds SXE-371/82/.91 S485/96/1.32 V2 by Forced Inductions, Profab castflow manifolds, Turbosmart Hyper-gate HP45, Turbosmart Race port BOV and controller, Mishimoto Intercooler
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Old 02-17-2018, 07:40 PM
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Quote:
Originally Posted by zakkb787 View Post
Donít wanna hijack but curious about running with no fan cause god this thing is loud.
I sugest not doing it. If you get suck in traffic you will lose AC which will affect your defrost too. It's a PITA to remove too.

If your fan is loud more the 5mins in the morning then you have a problem with the clutch most likely.

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Old 02-17-2018, 07:51 PM
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Quote:
Originally Posted by Dozerboy View Post
I sugest not doing it. If you get suck in traffic you will lose AC which will affect your defrost too. It's a PITA to remove too.

If your fan is loud more the 5mins in the morning then you have a problem with the clutch most likely.

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Thanks dozer. I pulled it from my lb7 before. Wasnít too bad. I live in the country where thereís no traffic lol wouldnít be opposed to putting it back in when thereís long trips or even all summer. Itís not loud for very long just is annoying to me. Truck runs halfway between 210 and whatever the lower number is. Thanks
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Old 02-17-2018, 08:11 PM
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Always ran my truck with no fan in the winter time, only time it would get to operating temp was going up the grade on 421. You're truck won't overheat idling without a fan, it won't even get up to full temp.
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