H3 Ls376/480

[Guerrero]

Thank you so much amrg!!

So for my current aplication, then the camaro ss fan is so much for my 120 amp alternator?
There is something that I really dont understand at all.....Supermodulation E-Fan claimed 4500 cfm and a consumption of 15 to 35 amps (15 in Low and 35 in High), so, what happen with the camaro ss fan? Why so much consumption? 65 amps is a lot...

Hope I can put light in this, because I am really interested in a Efan but dont want to go to a expensive mod including alternator (if possible)

Again Thank you so much! Really appreciate your fast responds and help

 

[amrg]

Ebay numbers.....

With electric motors its simple, more watts = more power

Also, brushless motor fans are 30% more efficient than brushed motor fans. So the (brushless) 850 watt camaro fan is equal to (brush) 1200 watt fan (if available)

The old fans use a brushed motor. As a result, they need alot of amps to spin them to full speed (called inrush current). Once they reach full speed the current stabilizes. The dual HO spal fans I used would pull 60 amps (each) when they start and stabilize at 30 ish (each)

The new fans use a brushless motor. They also start slow and speed up (0-100% speed takes 15 seconds). The brushless motors are more efficient so a 850 watt brushless fan is equivelant to 1200 watt brushed fan.

Only a few manufacturers publish fan cfm data and SPAL is one of them. They publisn both free flow and air flow behind a restriction (think radiator, condensor, trans cooler, etc...) which is how you use the fans in real life. SPAL is an OEM supplier for GM/Ferrari and other car makers so I trust their data. I have also tried the so called 5000 cfm fans, they end up using 20 ish amps and are weaker than SPALs 2000 cfm fans.

I needed a fan to cool a 500 hp vehicle using a small radiator. The H3 radiator barely support 300 hp, a double core griffin radiator (what I got) may get it to work with 400 hp so Im still undersized and the camaro ss was my solution. I know one guy on the colorado forum who had a supercharged 6.0 with the same double row griffin radiator and this fan was his solution too.

 

[Guerrero]

Ok now I understand, perfect thank you armg

I was investigating and my Oem Alternator from a 2006 H3 with the 3,5 has an output of 130 amp

Do you consider it too small to test the Camaro SS fan? If i can, i prefer not to search a high output alternator only for the fan...

Another question is, Can i wire the fan directly to battery? and Can I select the fan to run since the startup of the vehicle? With that application maybe is not necessary the extra fan for AC..

Thanks amrg, how is going the Front diffential with those 500 hp? or did you do a SAS?

 

[amrg]

Wiring the fan to battery wont work. The fan has a built in electronic module that needs a specific pwm signal that only the spal sensor, lingenfiter module or the pcm can supply, which then turns on the fan.
Your 130 amp alternator may make it work, but you will be at the edge and you wont have room to have accessories.
Realistically speaking:
Car electronic system ~ 5 amps
Fuel pump ~ 10 amps
Headlights ~ 10 amps
AC blower ~ 20 amps
Fan ~ 65 amps (at max speed)
Thats 110 amps on a 130 amp alternator (it will probably only supply 100 at 1800 rpm cruising)
Add stereo/LED light bar thats another 35 amps....