: Upgraded Dual Fans for the CTS-V



alradco
02-22-13, 06:35 PM
I'd like to get some input from you guys regarding the factory fans. We've been asked a few times about upgraded dual fans for the 04-07 CTS-V. I'm curious what you guys think in terms of this upgrade? I think most of us will agree that the V runs to the hot side and is designed that way from the factory. I think the first fan turns on at something like 215*?

There's not a lot of room but we should be able to get some better fans in there. I've attached a picture of a dual fan kit we already offer for another vehicle. We use Spal fans, everything is plug and play, shroud is aluminum, and we have it powder coated in black as well as others.

Thoughts and opinions on this or do you think it's a waste of time? Thanks for your input.

Peter

FuzzyLogic
02-22-13, 06:59 PM
Any idea on the approximate cost? Seems like a great option if you're considering upgrading or replacing your present radiator. The biggest hurdle is (as always) going to be interference between your products and aftermarket blowers and intake tubing.

darkman
02-22-13, 07:00 PM
I have an aftermarket radiator and a tune that triggers the fans at a lower temperature so I don't have a temperature issue.

I might be interested anyway because I have a clearance issue. Specifically, the stock fan shroud allows the radiator hose to encroach on the fan space and I cut up one hose before I clearanced the passenger-side fan. So my question would be - is the upgraded fan unit any "thinner" than stock. I like the look of the fan shroud as it looks like it would serve to prevent my potential radiator-hose encroachment problem.

etcts-v
02-22-13, 07:24 PM
I don't have issues with my heat mainly from a lower T-stat and lower turn on temperatures via HP tuners. That said I would be interested in a new fan setup, especially if you could package it with your radiator. My biggest concern like Fuzzy and Darkman is clearance, currently trying to figure out how to get a 4" intake tube to fit with my factory setup.

HAMSTAR
02-22-13, 09:24 PM
What would be really awesome is a rad setup that allows clearance for an over the radiator air intake from the front grille. That would sell to everyone, not just people looking for a more durable radiator.

Ny's Caddy
02-23-13, 12:32 AM
What would be really awesome is a rad setup that allows clearance for an over the radiator air intake from the front grille. That would sell to everyone, not just people looking for a more durable radiator.

^^Thats right...

verywhitedevil
02-23-13, 01:05 AM
i run a 4 inch intake tube and 102mm MAF with aftermarkter radiator. I would also upgrade fans, if available.

jmargo
02-23-13, 02:29 PM
As people have mentioned already the stock fans do a good job keeping things cool once you change the thermo and adjust the turn on times. The biggest advantage would be the gain of space.
You are in NorCal aren't you ?

BradCTSV
02-24-13, 01:38 AM
May be interested, depending upon cost.

OneFast V
02-24-13, 09:02 PM
I concur that a thinner design than the oem would be awesome. With your radiator and my supercharger things are getting very tight under the hood.

UnsafeAtAnySpd
02-25-13, 12:04 AM
In for more clearance. I have the RD radiator.

alradco
02-25-13, 08:07 PM
The biggest cost factor would be the fans. What diameter are the stock fans and how thick is the shroud/fan currently? We sell the black shroud/fans pictured above for $379, just as an example.

A radiator with over the top clearance for intake is not out of the question although we would need to do some kind of of pre-sale group buy for them. Thanks everyone for the input so far.

Peter

xbladr
02-25-13, 08:27 PM
A radiator with over the top clearance for intake is not out of the question although we would need to do some kind of of pre-sale group buy for them. Thanks everyone for the input so far.


This would be absolutely positively killer!

Skidmarcx
02-26-13, 10:21 AM
I think better fans would be a good upgrade... I like the idea of making space for a different intake option

HAMSTAR
02-26-13, 10:48 AM
That would be a total game-changer if we could eliminate the bend. This would really open things up for NA guys.

I don't know shit about turbos, but could it even open up room for a turbo to be mounted in the space freed up by the airbox?


The biggest cost factor would be the fans. What diameter are the stock fans and how thick is the shroud/fan currently? We sell the black shroud/fans pictured above for $379, just as an example.

A radiator with over the top clearance for intake is not out of the question although we would need to do some kind of of pre-sale group buy for them. Thanks everyone for the input so far.

Peter

HAMSTAR
02-26-13, 02:21 PM
The biggest cost factor would be the fans. What diameter are the stock fans and how thick is the shroud/fan currently? We sell the black shroud/fans pictured above for $379, just as an example.

A radiator with over the top clearance for intake is not out of the question although we would need to do some kind of of pre-sale group buy for them. Thanks everyone for the input so far.

Peter

Peter, do you have ball-park estimate for what a rad with over-the-top clearance would cost? Also, do you think you could also provide the other hardware necessary to run an intake pipe over there? For example, pipe, clamps, filter, baffle, wiring extension for MAF, etc. Let me know if you want to start a separate thread about this.

alradco
02-26-13, 07:56 PM
We might need to split this off into two threads later on but I don't mind the discussion at all. Seems there is some interest in the fans so someone please get me the measurements I need.

As far as the radiator being designed for over the top clearance. See the attached pic. That's an Alradco radiator in a CTSV. I'm not seeing much room for an over the top intake.

To answer the other question, yes we can provide pipe, clamps, etc.

alradco
02-26-13, 08:14 PM
Peter, do you have ball-park estimate for what a rad with over-the-top clearance would cost?

Sorry I missed this one. It's hard to say. The initial build quantity as well as down the road volume dictate that more than anything else. I will tell you this. I'm a car guy myself and I've had to pay the "Corvette tax" as well as paying the price for mods for having cars like that. I hated feeling like I was getting gouged. I'm not interested in selling $700+ radiators, that's why our CTS-V radiators are around $400, pretty close to the stock plastic stocker, and much cheaper than anything comparable. If there is enough demand and the design works, cost could be right along the lines of what we're already doing.

Hope that helps.

Peter

OneFast V
02-26-13, 09:52 PM
Can you tell me what measurements you need exactly?

HAMSTAR
02-26-13, 10:31 PM
It would have to be smaller or with a U taken out if the top. They did something like that for the CTS-VR

104460


We might need to split this off into two threads later on but I don't mind the discussion at all. Seems there is some interest in the fans so someone please get me the measurements I need.

As far as the radiator being designed for over the top clearance. See the attached pic. That's an Alradco radiator in a CTSV. I'm not seeing much room for an over the top intake.

To answer the other question, yes we can provide pipe, clamps, etc.

jmargo
02-26-13, 10:40 PM
We might need to split this off into two threads later on but I don't mind the discussion at all. Seems there is some interest in the fans so someone please get me the measurements I need.

As far as the radiator being designed for over the top clearance. See the attached pic. That's an Alradco radiator in a CTSV. I'm not seeing much room for an over the top intake.

To answer the other question, yes we can provide pipe, clamps, etc.

I posted earlier seeing how close you were to me. If you were close enough I would be willing to meet up with you so you could take measurements.

xbladr
02-27-13, 06:46 AM
It would have to be smaller or with a U taken out if the top. They did something like that for the CTS-VR

104460

That would be killer!

Dan_Gurney
02-27-13, 11:23 PM
The next trick after the radiator is how to get it down in front of the radiator efficiently to get filters in there. looking at my car quickly, i think you have to go out form the throttle body, quickly do to the mass air sensor, then fan out widely over the radiator, then split into two pipes to go on either side of the hood mount and run two smaller filters. While conceptually i like the idea I am not sure that you are really going to gain as much we would like. (unless you could do a really deep U, or have a hole in the middle of the radiator... to get below the hood latch release)

The better plan may be radiator clearance to allow a more gradual entry into the throttle body.

alradco
02-28-13, 11:08 AM
Can you tell me what measurements you need exactly?

Overall thickness of shroud with fans. And diameter of fans. With that info I can start looking at fan options. Thank you.

----------


It would have to be smaller or with a U taken out if the top. They did something like that for the CTS-VR

104460

Does that car have a stock hood? How about condenser? As well as other braces, etc? If all that's required is a shorter radiator it would be easy but I don't think that's the case?? It's been a long time since I've been under the hood so I'm not quite sure.


I posted earlier seeing how close you were to me. If you were close enough I would be willing to meet up with you so you could take measurements.

Thanks very much. But the measurements are very simple since we already have the radiator. All I need for now is shroud thickness with fans mounted and diameter of fans. Thanks again.


The next trick after the radiator is how to get it down in front of the radiator efficiently to get filters in there. looking at my car quickly, i think you have to go out form the throttle body, quickly do to the mass air sensor, then fan out widely over the radiator, then split into two pipes to go on either side of the hood mount and run two smaller filters. While conceptually i like the idea I am not sure that you are really going to gain as much we would like. (unless you could do a really deep U, or have a hole in the middle of the radiator... to get below the hood latch release)

The better plan may be radiator clearance to allow a more gradual entry into the throttle body.

I thought about the hole or big U too. But then you need a new shroud, a/c condenser, and if anything else is in the way. Also would have to factor in sticking a large air intake directly in front of the radiator and what that can potentially do to air flow to the radiator.

----------

Also looking at that pic of the CTS-VR, it appears the engine is further back? Look at how much room there is between the radiator and pulleys. Or am I seeing it wrong?

DMM
02-28-13, 08:40 PM
I simply do not understand the fascination with an over the top intake tract. What will this provide over and above placing the air inlet behind the drivers headlamp or even from the fender well?

Anyhow, would absolutely love to have an Alradco for my V, however I don;t think it will fit since the E-Force puts the throttle body right where the top tank looks to extend. Would the upgraded fans be able to mount to the OE radiator?

alradco
03-01-13, 12:39 AM
I simply do not understand the fascination with an over the top intake tract. What will this provide over and above placing the air inlet behind the drivers headlamp or even from the fender well?

Anyhow, would absolutely love to have an Alradco for my V, however I don;t think it will fit since the E-Force puts the throttle body right where the top tank looks to extend. Would the upgraded fans be able to mount to the OE radiator?

Post a picture of your engine bay, I'd like to see it. On the engine bay side our radiator comes out about 1/4" more than the stock radiator. Or order one and if doesn't fit you can send it back. We did the same thing on a supercharged V to see if it fit and it did.

BradCTSV
03-01-13, 01:15 AM
Peter-

I could meet you at your Concord location for measurements. I have your radiator in my car.

Brad

Dan_Gurney
03-01-13, 09:14 PM
Yeah the CTS-VR has the engine set way back. Plus with hood pins you don't have to deal with the hood latch right in the middle of the intake.

I agree with alradco that this is a much larger undertaking than I think any of us really would want to do (or at least enough to sell and make money on the radiator)


I simply do not understand the fascination with an over the top intake tract. What will this provide over and above placing the air inlet behind the drivers headlamp or even from the fender well?

Depending on if you think the stock intake ads any restriction (hence loss of power) the over the radiator intake provides a nice clear shot to the throttle body (less restriction, more power) plus picking up the air in front of the radiator should give the coolest air you can get and somewhat of a "ram air" effect

alradco
03-04-13, 08:00 PM
Peter-

I could meet you at your Concord location for measurements. I have your radiator in my car.

Brad

I appreciate that Brad and will probably take you up on it in the future but all I need for now is just the thickness of the shroud with fans. If you can measure that, it would be great. Thank you.

Peter

BradCTSV
03-05-13, 12:47 AM
The shroud is 3.5" thick and the back of the fans add a bit more about 3/8" approx. I had a hard time getting the exact measurement that 3/8"

alradco
03-06-13, 12:57 PM
Thanks Brad. I'll see what fan would best fit.

Naf
03-07-13, 02:37 AM
Whats the CFM of your fans over the stock ones?

I just swapped my second fan blade from a 7 to a 5. Will give it a try.

If we are able to find fan motors that are more powerful like 200W over the 160W i think we can fix our problem...

You need more air flow to solve our heat issue which means more revs and ultimately more powerful motors...

alradco
03-08-13, 04:40 PM
Whats the CFM of your fans over the stock ones?

I just swapped my second fan blade from a 7 to a 5. Will give it a try.

If we are able to find fan motors that are more powerful like 200W over the 160W i think we can fix our problem...

You need more air flow to solve our heat issue which means more revs and ultimately more powerful motors...

We don't have fans selected yet for this application. Working on that now.