I have 05 2500HD w/ 6.0L and I want to install an electric fan in place of the stock fan. I have heard mixed reveiws on this subject about whether an electric fan will function properly and be able to keep the tempature at a normal level.

 

I installed a Fex a Lite Fan set up 2 years ago and ZERO ISSUES. 5700 CFM. Kicks ***, engine spools up faster and runs at 170-180 at most, even in traffic. Dump the fan and clutch, save some gas, pick up some HP, like 15hp.

 

i have the electric and the clutch but before with just the clutch pulling a loaded trailor with 2 forklifts that weigh 6000 pounds a piece trailor squaking run my temperature pretty high even changed thermostat for
lower temp didnt help that much with loads like these. put in that fan cools it with no problem just need to hook up shut off switch for winter not much heat comes in with it already cold blowing mid range heat out on you. chevy roast me out man they put some damn good heating in these trucks, anyways not at all a bad idea to install thinking about pulling my clutch fan but not sure if i should with so much weight that i haul around?

 

The Flex a Lite Twin set up runs @ 5700cfm per. I used to pull my Carrera 270 Cyclone to Havasau 4 times a year from Ca over the Cajon pass and Hollerin Springs on the 15 Frwy in up to 120* temps with Zero issues( 00/Z71 1500 ECab/ShrtBed). You speak about cold weather. I just never see it cold enough to consider an issue though I do understand how it could be. I tell you that you should get rid of the clutch as it is doing nothing but pulling about 3-5hp off the motor as it still engages. It offers Zero balance help and with the fan off may actually be putting more strain on your water pump shaft. The Flex system has a thermostat that you can set from 160* - 190*, adjusting when the fans come on. Hypertec has had issues with its 160* thermostat and the Factory 205* thermostat is FN nuts. That leaves the Hypertec's 180* which just offsets the Hypertec Programmer's (for those of you that have one) "do you have a 160* thermostat installed," question. I just took my Dremel and reamed out the GD thing. I let the motor, which runs naturally at 175* do its thing. By running at 205*, your loosing about 15hp and at 190* 10hp. The other area to relieve, which is a MUST, is to do the TB bypass. This is where the 1/4" water lines go into the right of your TB and out the left. You can get a simple kit, or buy 1/4" copper tubing, about 6" and 2 small hose clamps to stop HEATING UP YOUR GAS, which eats up another 8-10hp. Remember, cool air, cool gas = HP; just look at any Bush/Cup car. They make an additional 50hp just from cold air induction which cools the gas. That is why they also run a plentium that is raised off the motor to allow air to pass below, taking the heat with it.
Think about Dumping the clutch, maybe do the TB bypass and if your running Flex a Lite fans, think about reaming out the thermostat and pick up that 15hp your loosing. Just set the fans thermostat settings to coincide with the seasons change. Given a chance, your motor will run up to 190* when it is 40* outside. Your the boss man, you know what works in your area. Just some food for thought.
JMHO - Works for me and many other in the TaraDelSole Club.
GL
Greek

 

Get a 160 degree thermostat and some water wetter. keeps it at 175-180 and keeps your fan clutch from locking up... no need for fans unless the environment or heavy towing demands it. Save $350.

 

Black 4x4 - I am suprised that your 05' does not have electric fans. I have not looked at the HD but my 5.3 non-HD has electric fans stock.

 

I have an 02 and im putting fans on also. What size do I need and do I need those big double package ones? Dont want to spend $300+ on fans. Thanks

 

You might be able to find a wrecked 05 somewhere and pull them off and save save cash. Dunno 'bout the 2500HD, though...

 

Oh, good call... Always forget about those wrecked ones lol

 

I think the HD's have a radiator that's bigger by 2 inches in one direction. Think it's height-wise...