05+ Cooling Fans Direct Fit

[orange57]

Hey guys,

I saw the write up with the Mark VIII Fan, and that looked pretty good, but do the 05+ electric fans bolt right up to a OBS tahoe? From what I have read they will to the NBS 2000+, but couldn't find confirmation that they are a direct fit to the 2000 and older OBS tahoes.

Thanks,

matt

 

[_Dylan_]

the obs and nbs radiators are different, so I'm going to assume that's a no.

 

[orange57]

Thank you. Looks like its time to get a mark VIII fan

Matt

 

[Monstar_est87]

The Mark VIII will get the job done...

 

[orange57]

I read through the write up, seems like a solid choice. i'll start acquiring parts soon. I also think the previous owner put in a colder tstat, so iI will swap that out as well at the time. Temps seem to hover around the 170 ish point. I will probably just go back to OEM temp.

 

[Monstar_est87]

Yea stick with oem... It took me a blown head gasket and cracked head to learn this lesson...

 

[SunlitComet]

Unless specified by the installation manual of a super or turbo charger use only a 195° thermostat on the engine.

 

[97TahoeLT]

The Mark VIII will get the job done...

from what year?

Sent from my LG-P768 using Tapatalk 2

 

[SunlitComet]

I prefer duals so as to have a back-up. I use the flexalite 280.

 

[orange57]

So I ran my OBDII Bluetooth along with the torque pro app today. Coolant actually stayed right around 195 according to that. The gauge in the dash though is much closer to the mark between 100 and 210, making me think it was running cool. Guess it may already have a 195 in there

I'm debating if I want to do a single fan or a dual fan. I do like the idea of fans being redundant, especially in AZ where it can get quite warm. My real reason for wanting an efan is so my AC blows cooler quicker. Maybe i'll just put an aux fan on for the AC....so many choices.

 

[SunlitComet]

There is a oem front mounted fan that can be used and wired just for that occasion.

http://www.amazon.com/ACDelco-15-8686-Auxiliary-Radiator-Motor/dp/B0012PM154

Inexpensive, mounts to front of condenser and you can even wire it to cycle when the a/c clutch is on if you like.

 

[foreverfalcon40]

I have a Mark 8 fan I purchased from Stevie still in the box that I got from him. Never installed it b/c I am swapping in 6.0 with 34in rad and fans.

LMK if your interested I can take pics and make me offer that includes shipping.

 

[Monstar_est87]

All proceeds go to the keeping the obs's alive foundation... The front mounted auxiliary fan is another good choice, u can trigger the fan to turn on and off with the a/c condenser... I plan on doing this... Ur LIMITED already has pre drilled holes on her for it... Its just gonna have 2 go on the drivers side since our oil cooler took the passengers side... U can get the longer lines to relocate but just save ur time and money...

 

[SunlitComet]

I was hoping you would say it is a good idea too. After all you were the one who posted the picture a year and a week ago today.

 

[foreverfalcon40]

There is a oem front mounted fan that can be used and wired just for that occasion.

http://www.amazon.com/ACDelco-15-8686-Auxiliary-Radiator-Motor/dp/B0012PM154

Inexpensive, mounts to front of condenser and you can even wire it to cycle when the a/c clutch is on if you like.

Never seen that nor thought of that. VERY COOL! Help keep the family nice and cool. Plan on towing?

 

[Monstar_est87]

I was hoping you would say it is a good idea too. After all you were the one who posted the picture a year and a week ago today.

Yes sir... I recognize my Kline screw driver... The good old days at the yards... I do miss them...

 

[SunlitComet]

Never seen that nor thought of that. VERY COOL! Help keep the family nice and cool. Plan on towing?

Mons snapped that picture at a junk yard a year ago. But I have plans to add one and at least one other cooler/fan assembly under the body in the future. You can call it cooling redundancy in my case. Basically it is a plan to have what you see in the pic for rad w TOC&EOC, condensor, p/s cooler on the right there, keep the existing external tranny cooler as well and add a fan cooled dual fluid radiator under the body somewhere for strict temperature control on tranny and oil. The external tranny cooler may change it's job perhaps. Would definitely cover towing. I don't like my tranny temp spiking to 217° in stop and go driving with out trailing and would like to drop the oil temp some degrees to since it cools parts like bearings as well. I am capable of really pushing the limits on my SUV so I could use the extra protection.

 

[orange57]

I thought about doing just the aux fan also. I also came across these:

http://www.cfrperformance.com/8_HIGH_PERFORMANCE_ELECTRIC_RADIATOR_COOLING_FAN_p/hz-1001-8.htm

Seems like a descent flow rate for a small fan. And not a lot of amp draw.

 

[SunlitComet]

The delco one i listed I think would be better. It is already bracketed to fit existing holes and was specifically chosen my gm after all. Not expensive either. Blade design will likely be quieter as well.

 

[orange57]

I think I may pick up one those factory fans soon. Does the wiring pre-exist on the truck for this? It's dark and hot out, and I don't want to walk outside