Installed LS-1 fan assembly in my 3rd gen
07-17-2015, 12:28 AM
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Car: 92 1LE B4C
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Re: Installed LS-1 fan assembly in my 3rd gen
I have a dual fan upper shroud and have started modding. Next is to see the fitment in the car but what are you using to hold the upper bracket to the fans? Is there any epoxy or is it simply pressure that holds it to the radiator?
Also, what holds it in the bottom? does it just sit down in the hole or is it bolted to anything?
Also, what holds it in the bottom? does it just sit down in the hole or is it bolted to anything?
07-17-2015, 12:32 AM
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Re: Installed LS-1 fan assembly in my 3rd gen
I'm following along with your fan swap-it will be interesting to see how well your fans run using my 3-speed conversion fan harness. You wont have any issues amp/draw wise-that control harness is designed to support up to a 40A draw. Once you get it installed, check the fan positive at each speed and see what they draw.
I reworked my harness so they each have their own 12ga from the battery.
07-19-2015, 10:44 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
My phone is only letting me upload one picture at a time. I'm sorry.
07-19-2015, 10:46 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
And then..........
Last edited by b4ccamaro; 07-19-2015 at 10:47 PM. Reason: Same pic
07-20-2015, 01:11 AM
#59
Re: Installed LS-1 fan assembly in my 3rd gen
I'm following along with your fan swap-it will be interesting to see how well your fans run using my 3-speed conversion fan harness. You wont have any issues amp/draw wise-that control harness is designed to support up to a 40A draw. Once you get it installed, check the fan positive at each speed and see what they draw.
The fans work, unfortunately my engine ate itself almost immediately after I got the trans rebuilt. So...while I know the fans work, I've not been able to drive the car with them installed. Pending the rebuild which may take a while because I have no money left after rebuilding my trans for the second time in 8 months.
07-22-2015, 08:02 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
early 2000s grand prixs, bonneville, etc have some nice dual electric fans. never tried them on a 3rd gen, but they work great for mud trucks, hot rods, etc. usually find them at the pick n pull for cheap.
single weather pack fuse holders can also be interchanged to a fan plug if thats all you can find at the junkyard. think ecm fuse by the battery on 3rd gens.
01-10-2016, 09:06 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
I'm currently in the middle of my LS swap and I found this thread to get ideas on how to mount my fans. However, I'm going to take a moment to share some info about the fan motors.
The LT1 and LS1 fan motors are for the most part, exactly the same. According to the Camaro parts manual that I have, the part number for both motors is GM 22104439. I have uploaded the pics from the book (No. 5 on diagram). Though it may be hard to read the text for the LT1 fan motor, note that the description for both LS1 and 96-97 LT1 motors say AC Delco part # 15-8404. According to the book, only 93-95 LT1 had a different part number of delco 15-8563. Though I have no idea if these part numbers make any difference in the performance of the different motors.
The LT1 and LS1 fan motors are for the most part, exactly the same. According to the Camaro parts manual that I have, the part number for both motors is GM 22104439. I have uploaded the pics from the book (No. 5 on diagram). Though it may be hard to read the text for the LT1 fan motor, note that the description for both LS1 and 96-97 LT1 motors say AC Delco part # 15-8404. According to the book, only 93-95 LT1 had a different part number of delco 15-8563. Though I have no idea if these part numbers make any difference in the performance of the different motors.
Last edited by TecknoMike; 01-10-2016 at 09:17 PM.
01-29-2016, 08:16 AM
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Re: Installed LS-1 fan assembly in my 3rd gen
While the 3rd gen fan plug ins will run them, the LT1/LS1 fan motors draw more current so wiring is a bit more critical here. Also, while you can use them as 1 on, then 2 on like stock, any dual fan assembly w/integrated shrouds always perform better when wired in series for both on low/both on high. Its a more efficient design this way. Now, Ozzy is running one of my 3-speed conversion harnesses which will convert BOTH fan motors to run @ low, medium and high speed so it goes even further in terms of efficiency.
Both 3rd gen fan motors and LT1/LS1 fan motors use metripack 630 series connectors and while that does allow you to interchange the motors, there is a big difference in the stoutness of the later fan motors-imo simply swapping motors into a stock 3rd gen shroud setup is a waste of time because the factory dual fan "shroud" if uou can call them that is just a junky design-it is nowhere near as efficient as the newer dual fan setups. If you're going for a Resto look that's one thing but if more efficiency is your aim then stepping forward with a better dual fan design is worth the work to install.
Both 3rd gen fan motors and LT1/LS1 fan motors use metripack 630 series connectors and while that does allow you to interchange the motors, there is a big difference in the stoutness of the later fan motors-imo simply swapping motors into a stock 3rd gen shroud setup is a waste of time because the factory dual fan "shroud" if uou can call them that is just a junky design-it is nowhere near as efficient as the newer dual fan setups. If you're going for a Resto look that's one thing but if more efficiency is your aim then stepping forward with a better dual fan design is worth the work to install.
01-30-2016, 04:58 PM
#65
Re: Installed LS-1 fan assembly in my 3rd gen
https://www.flex-a-lite.com/electric...ctric-fan.html
I'm looking at possibly trying to retrofit something like these, thou the LS set up is quite a bit cheaper. I am just tired of watching the temps skyrocket
Mike
I'm looking at possibly trying to retrofit something like these, thou the LS set up is quite a bit cheaper. I am just tired of watching the temps skyrocket
Mike
01-30-2016, 05:48 PM
#66
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Re: Installed LS-1 fan assembly in my 3rd gen
From experience those flexalite fans don't move nearly as much air as the LT1/LS1 dual fans but that always going to be the difference between OEM designed fan assemblies and aftermarket.
02-10-2016, 05:09 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
So i have been looking into a better overall cooling system for my car. I was looking at be-cool setups and 3core+dual fan setups on ebay, then i saw this thread. So from what I have read you can use the bottom support as is but for the top support you either need an LT1 upper or you need to modify the fan to fit the stock upper?
02-10-2016, 07:11 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
Neither. The LT1/LS1 fans have their own shroud. I suppose you can mock up something but its more work IMO than its worth.
02-10-2016, 09:34 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
Ok, i see now so i would just have to hack away in a sense till it fits. I just happen to have a friend that switched set ups and willing to give me a stock dual fan out of a 2000 WS6, and me having cooling issues with the stock fan figured it'd be better off. Any recommendations when it comes to rads that run cool for a reasonable price?
06-18-2016, 09:32 AM
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Re: Installed LS-1 fan assembly in my 3rd gen
does anyone have the dimensions if the ls1 fan and shroud assembly? need to know how deep it is (from the radiator towards the motor)
06-18-2016, 09:30 PM
#71
06-17-2020, 08:57 PM
#72
Re: Installed LS-1 fan assembly in my 3rd gen
. Now, Ozzy is running one of my 3-speed conversion harnesses which will convert BOTH fan motors to run @ low, medium and high speed so it goes even further in terms of efficiency.
Both 3rd gen fan motors and LT1/LS1 fan motors use metripack 630 series connectors and while that does allow you to interchange the motors, there is a big difference in the stoutness of the later fan motors-imo simply swapping motors into a stock 3rd gen shroud setup is a waste of time because the factory dual fan "shroud" if uou can call them that is just a junky design-it is nowhere near as efficient as the newer dual fan setups. If you're going for a Resto look that's one thing but if more efficiency is your aim then stepping forward with a better dual fan design is worth the work to install.
Both 3rd gen fan motors and LT1/LS1 fan motors use metripack 630 series connectors and while that does allow you to interchange the motors, there is a big difference in the stoutness of the later fan motors-imo simply swapping motors into a stock 3rd gen shroud setup is a waste of time because the factory dual fan "shroud" if uou can call them that is just a junky design-it is nowhere near as efficient as the newer dual fan setups. If you're going for a Resto look that's one thing but if more efficiency is your aim then stepping forward with a better dual fan design is worth the work to install.
09-03-2021, 01:22 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
I didn't like how my car would get warm while sitting still with the A/C blowing. I noticed it would cool down once I was moving and came to the conclusion that the factory dual fan setup sucks, and I don't mean air,,,lol. They kind of hang out in the breeze with no shrouding to help.
I noticed on my wifes 97 Z-28 you can run the A/C without any fear of the engine getting warm and after looking I found that GM really improved on the design with a nice shroud to enclose the fans. I decided thats what I needed to do.
I found a pair of dual fan setups, one for an LS-1 and the other for an LT-1 so I bought them both. The shrouds differ slightly but nothing that would cause fitment problems. It is more of a cosmetic difference. I liked the looks of the LS-1 fan better so I started with that.
I went to GM and picked up a new upper radiator support and also some new belt routing and caution fan stickers. Thank god it was all still available. I did not want to modify my original pieces.
After removing the factory fans the LS-1 assembly literally fell right in like it was made for it. I did trim the side tabs off of the shroud since they are not needed on the 3rd gen and I also thought it looked much cleaner without them. Once in there I trimmed the new upper radiator support basically in a straight line to fit flush with the upper fan shroud, and the upper tabs worked perfect for holding the shroud in place, almost as if GM wanted this swap to happen,,,lol. I installed the new stickers and it looks like the car came factory with this setup. I am very pleased with the results.
When my car would idle before even without the A/C on, once the fans would come on it would basically hold that temperature, so the fans would not cycle, the motor would stay at 185 (when I have the fans coming on) and the fans would just continuously run at that point.
Now the fans come on and within 1-2 minutes it pulls the temp back down and the fans shut off as intended ( I have that set at 175). I had the A/C running while in the garage for about 10 minutes and the gauge never moved, the computer said the engine was holding 190 degrees. I couldn't be happier.
Anyone that is contemplating this swap I just want to say it was literally a breeze,,,lol. Even the factory harness plugged right in since GM has not changed the fan motors over the years. This may be old news but I thought I would share. Larry.
I noticed on my wifes 97 Z-28 you can run the A/C without any fear of the engine getting warm and after looking I found that GM really improved on the design with a nice shroud to enclose the fans. I decided thats what I needed to do.
I found a pair of dual fan setups, one for an LS-1 and the other for an LT-1 so I bought them both. The shrouds differ slightly but nothing that would cause fitment problems. It is more of a cosmetic difference. I liked the looks of the LS-1 fan better so I started with that.
I went to GM and picked up a new upper radiator support and also some new belt routing and caution fan stickers. Thank god it was all still available. I did not want to modify my original pieces.
After removing the factory fans the LS-1 assembly literally fell right in like it was made for it. I did trim the side tabs off of the shroud since they are not needed on the 3rd gen and I also thought it looked much cleaner without them. Once in there I trimmed the new upper radiator support basically in a straight line to fit flush with the upper fan shroud, and the upper tabs worked perfect for holding the shroud in place, almost as if GM wanted this swap to happen,,,lol. I installed the new stickers and it looks like the car came factory with this setup. I am very pleased with the results.
When my car would idle before even without the A/C on, once the fans would come on it would basically hold that temperature, so the fans would not cycle, the motor would stay at 185 (when I have the fans coming on) and the fans would just continuously run at that point.
Now the fans come on and within 1-2 minutes it pulls the temp back down and the fans shut off as intended ( I have that set at 175). I had the A/C running while in the garage for about 10 minutes and the gauge never moved, the computer said the engine was holding 190 degrees. I couldn't be happier.
Anyone that is contemplating this swap I just want to say it was literally a breeze,,,lol. Even the factory harness plugged right in since GM has not changed the fan motors over the years. This may be old news but I thought I would share. Larry.
Hello friends. Summer 2021 I decided to do the LS1 Dual Fan Shroud modification into my 1992 Camaro L98, along with the pusher fan upgrade/Davies Craig #0444. The goal was to decrease the increasing engine temperature and help overall performance.
I agree with this previous thread, I am very pleased with the outcome of my upgrade. I bought a used LS1 fan shroud locally in the DFW TX area, I brought it home to clean, paint gloss black, install insulation material on its surface, and slap on the Camaro's stock radiator. When I had the stock TPI fan setup, the temperature gauge on the instrument cluster would needle at about 220ºF ---even after previously installing a 180ºF thermostat and a heavy duty water pump (Murray CP5049H). With the new mod/upgrade, the needle sits slightly over 100ºF. Here is a video I made about the process:
Summer 2021, I bought a used LS1 Camaro fan shroud.
Before installing, mock up and tested the pusher fan electronics.
What the stock TPI fan setup looked like.
Fitting the new LS1 fan shroud
This was a good and tight fit. (Zip ties were used to attach it to the top of the radiator)
The Yellow/Black sticker (purchased through eBay) makes it look better, in my opinion.
Pusher fans installed.
Final install.
09-22-2021, 01:56 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
I found that the dual fan support is too skinny on the passenger side... only the single fan support seems to work well. Just used a dremel and it works great for cutting the shroud....
Also, the 2 LS1 fan motors suck a lot of energy so I had to replace one with a stock TPI motor to compensate for the draw when idling, in gear, brakes and headlights on.
Also, the 2 LS1 fan motors suck a lot of energy so I had to replace one with a stock TPI motor to compensate for the draw when idling, in gear, brakes and headlights on.
09-22-2021, 02:03 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
On a side note, TPI Firebirds' won;t easily clear the passenger side fan since the passenger side fan is up and not down like the driver side... in order to clear the fan you need a I think 1988 and up intake setup. I got the SLP one so its basically the same thing. it raises the MAF and it JUST barely clears the fan. I had to ut a hole in the shroud to allow the 2-MAF mounting bolts to clear as well.
09-22-2021, 05:24 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
The power draw from those fans is big. I found out when I opened up my wiring harness that both fans are running off of 1 12ga wire. Real smart GM! Behind the motor inside the wire harness is where they split 1 12ga into 2 12ga wires to run both cooling fan relays.
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09-22-2021, 07:39 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
Oh yeah, I forgot to mention...
My car was single fan...IO wired the second on a separate circuit.
The LS motors suck soooo much power though.. .I eneded up using 1- LS motor and a new TPI motor from ac delco. That seems to help a lot
11-06-2022, 01:43 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
So I'm finally starting to do the whole LS1 fan swap, but I have a couple questions. I know this might sound dumb, but which way do the LS1 fans go in? I've seen photos where the three tabs are on top, and I've seen others where the flat side is on top. That also impacts if the plugs for the fans are on top of the motor or beneath. Is there a specific way that they go in, or is it owners preference?
My second question is in regards to the wires. Has anyone here used the wire kit from formula1LE? I bought one, but am a little unsure where the easiest way and location to connect all the wires. I was hoping that somebody here had already done it to make it a bit easier. If not, I'll contact him and see what he recommends.
My second question is in regards to the wires. Has anyone here used the wire kit from formula1LE? I bought one, but am a little unsure where the easiest way and location to connect all the wires. I was hoping that somebody here had already done it to make it a bit easier. If not, I'll contact him and see what he recommends.
11-06-2022, 02:23 PM
#81
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Re: Installed LS-1 fan assembly in my 3rd gen
3 tabs go up. Wire plug is on the bottom of motor. It fits better that way. I bought wire plug from auto parts. fits the fans and ran wire from there.
11-07-2022, 10:48 AM
#82
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Re: Installed LS-1 fan assembly in my 3rd gen
My harness was home made. I ran the wires all to the driver side firewall where there were already relays.
11-07-2022, 04:42 PM
#83
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Re: Installed LS-1 fan assembly in my 3rd gen
I put the tabs up on top... it slides right in that way.. the other way it might be diffeent... you can look at the pictures on this thread. Really preference though on what you do.
I just wired them up so they both work at the same time.
I just wired them up so they both work at the same time.
11-23-2022, 09:22 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
I purchased a new fan wire kit from Formula1LE. The kit requires me to connect four wires to help control the fans. They are Cylinder Head Temp Switch, A/C Clutch Power Pressure Switch, Switched Ign Source, and PCM Low Temp Trigger. I know that the cylinder head switch is on the passenger side head, but I'm not sure of where the best place to splice into to connect the other three. I can't find much help on the boards and the seller wasn't much help at all. He pretty much said that it was up to the installer. I saw one comment that said something about connecting one of the wires up by the relays on the driver firewall, but I'm not sure if that was correct or not. For the A/C clutch wire, I think I understand that I can connect to the connector on the A/C hardline that sits down below the passenger strut tower. Is that correct? I don't have the stock A/C compressor anymore (I upgraded to a Sanden unit from Original Air) so I don't have the same wires that the stock unit has. Do you have any advice on where to connect the wires?
11-29-2022, 01:03 PM
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Re: Installed LS-1 fan assembly in my 3rd gen
A/C Clutch Power Pressure Switch, ,Switched Ign Source and PCM Low Temp Trigger
A/C Clutch- I would think even if you dont have the stock compressor / connector, the wires would do the same thing? Its basically just a power wire right? I used to have a fan on this,... but the constant on / off was kinda annoying
Pressure Switch - This I belive is referring to the switch in the hard line that goes to the evaporator either along the frame rail or basically from condenser to evaporator.... I know the switch there controls the fan for the ac...I believe the sccumulator has constant power..
Switched Ign Source - id get an add a fuse for the radio... thats the easiest switched ignition source if you just need it to turn on the relay or something
PCM Low Temp Trigger - ??? Im not sure what this is?? Newer cars have the fans run at a lower speed on low at certain temp, then high on higher temps... As far as I am aware, thirdgens only run the fans at one speed as the fans motors only operate at one speed. My understanding though was the LS fan motors were able to operate at low and high speeds depending on the need. mine only runs at one speed though.
Mine just run on a pretty basic setup though.
A/C Clutch- I would think even if you dont have the stock compressor / connector, the wires would do the same thing? Its basically just a power wire right? I used to have a fan on this,... but the constant on / off was kinda annoying
Pressure Switch - This I belive is referring to the switch in the hard line that goes to the evaporator either along the frame rail or basically from condenser to evaporator.... I know the switch there controls the fan for the ac...I believe the sccumulator has constant power..
Switched Ign Source - id get an add a fuse for the radio... thats the easiest switched ignition source if you just need it to turn on the relay or something
PCM Low Temp Trigger - ??? Im not sure what this is?? Newer cars have the fans run at a lower speed on low at certain temp, then high on higher temps... As far as I am aware, thirdgens only run the fans at one speed as the fans motors only operate at one speed. My understanding though was the LS fan motors were able to operate at low and high speeds depending on the need. mine only runs at one speed though.
Mine just run on a pretty basic setup though.
Last edited by 1989karr; 11-29-2022 at 01:11 PM.
01-02-2023, 02:10 PM
#86
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Re: Installed LS-1 fan assembly in my 3rd gen
the HF125 contorller from https://www.autocoolguy.com/home would control these fans really aweosmely.
I used several of these controllers on my builds, and they ramp up the PWM/speed of the fans to what the car needs.
I used several of these controllers on my builds, and they ramp up the PWM/speed of the fans to what the car needs.
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