Electric Fan

[BOSS]

The word "All" wasn't the perfect word, but the vast majority do use dynojets. And any dyno that "corrects" to a DJ is just adding in the DJ inflation factor.

I have yet to see any manufacturer claim their gains in real % other than the outrageous marketing claims like "up to 20% more power", et al. When a parts manufacturer uses a DJ dyno for a baseline and max power, then that difference is also inflated by near 20%, it's simple math.

We are not at all bad mouthing any of these manufacturers, as we have run independent back to back tests on a number of systems on the same dyno on the same day (Volant was included in that test). ALL performed quite a better than the stock box and tube. None lived up to any manufacturers claims, but that is to be expected.

Bottom line - manufacturers are going to blow up their claims on any product, automotive or otherwise. It's how they SELL PRODUCTS. Doesn't take a rocket scientist to figure that out guys.

Thanks for the chime in Justin - look forward to meeting ya in SanAntone!


BOSS

 

[Volant1]

I'm looking for electric fans that when "all said and done installed" look like factory but would like to see any successful install pics as well!!

This is the installed purma cool fan pack

 

[JennaBear]

I have the 05 Tahoe fans, easiest to install since they are OEM. They are plug and play with the PCM (PINS 42 and 33) so you don't have to mess with tapping into the radiator.

 

[blueflamed03]

nice pencil sharpener on top of the engine Jenna

 

[JennaBear]

She comes in handy from time to time

 

[dec322]

Don't you need a larger radiator for the 05-06 fans?

 

[JennaBear]

If you have the Z71 or towing package then you have the larger radiator.

EDIT: if you have the narrow radiator, go with the LS1 fans, they are OEM as well.

 

[road1will]

huh this is getting to be way off topic so instead of beating a dead horse in going to leave it be. When you tested kit after kit im sure the vehicle had some drive time in between swaps I would love to see the data and which kits were tested [email protected]

Do you work for Volant?

 

[dec322]

If you have the Z71 or towing package then you have the larger radiator.

Towing package? I know I don't have the z71. How do I check on a towing package?

I have the gear towing stuff on the truck but I'm not sure how to check if it is factory or if it was an add-on.

 

[road1will]

I have the 05 Efans...oh wait...it is an 05

 

[JennaBear]

Towing package? I know I don't have the z71. How do I check on a towing package?

I have the gear towing stuff on the truck but I'm not sure how to check if it is factory or if it was an add-on.

If the radiator bolts on the support are 38" apart, then you have the larger radiator.

 

[dec322]

If the radiator bolts on the support are 38" apart, then you have the larger radiator.

Thanks, I'll check in the morning.

 

[Volant1]

Do you work for Volant?

Yes I am the tech, R&D and Dyno guy for Volant

 

[dec322]

I checked my radiator and found that I do have the larger one.

I guess I could buy the 05 fans from ebay (250ish) and hook them up. Won't I still need a tuner to program the truck to use the efans?

 

[JennaBear]

Yes, you will need a harness and someone to turn your fan PINs on. This is the optimal way, as your PCM will tell your fans to be on high or low as well as one on or one off. They will be able to monitor your system point blank better than the radiator tapping method.

 

[BOSS]

So after reading all this and other threads, I've read there are some HP gains from this.

What are the estimated HP gains?


BOSS

 

[JennaBear]

Hard to say with all the different set ups. Depend on coolant temps, avg speed driven, ambient temp. etc.

 

[dec322]

So after reading all this and other threads, I've read there are some HP gains from this.

What are the estimated HP gains?


BOSS

If it is anything less than 25 rwhp then I'm out.

Really, I don't think it would be huge but I want 2-3 more mpg.

 

[Alex29573]

i have the small radiator but have the 05 fans on order...

im guessing the 05 fans are too big/wide for me? can they be modified?

or is it better to get the smaller ls1/lt1 fans? (which are cheaper)

 

[JennaBear]

It is not possible to modify without installing a new radiator. You will be better off selling those fans (probably get what you paid for if not more) and buy the LS1 fans.