lol, if that works I'll be bringing some parts to BB 2016 for sure!
CK5
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'89 R3500 Crew Cab 2wd to 4wd conversion & beyond
- Thread starter mrk5
- Start date
Started out with 2wd TBI350 with SM465 to current 4wd with 454, 700r4, NP241
Works for me! But it may not be popular with everyone else. 
That would be a rather cool tradition to start.
I'm in
I haven't been happy with the cooling I was getting, or not getting, from the single, 2spd Volvo fan. I had opened up the shroud to get better highway cooling, which worked. But then my under 35mph cooling suffered.
I decided to try the Windstar dual fan setup. Seems like the best of both worlds because there are 2 big holes for the fans that will let the air flow on the highway, but also 2 fans to get cooling at slow speeds.
With the aftermarket radiator the fans are wider than the core, but also shorter. Did some measuring and cut notches for the hoses and the drain.
I didn't like how open the shroud is on the big fan side. This is how it's done from the factory. So I added the aluminum piece to create a shroud around that outside edge.
It's riveted to the shroud.
I decided to use a dual 70amp relay board from Leash Electronics.
I had Windstar fans in my K5 and I remember I tried a 30amp breaker for the big fan and it kept tripping so I had to bump up to a 40amp breaker. I figured using 70amp relays would be keep the relays from being overtaxed. The big fan has a 40amp fuse and the small fan has a 30amp fuse.
I have temperature switches to active the fans.
I needed connectors for the relay activation spades. I figured out the bottom 2 slots on my 3-slot 56 series plugs lined up perfectly. I just shaved the third hole off which also gave it good clearance between the plug body and the relay board.
Here's where I mounted it.
I filled the back of the plugs with silicon to keep moisture out. I used the factory fan plugs and wires and ran a 6ga wire through an 80amp fuse to the feed side from the battery.
We'll see how this works on the trail next weekend.
Also had some fun decorating a junction block cover on the dash.
Realized the kids need to watch Back to the Future because they had no clue what a flux capacitor is.
I decided to try the Windstar dual fan setup. Seems like the best of both worlds because there are 2 big holes for the fans that will let the air flow on the highway, but also 2 fans to get cooling at slow speeds.
With the aftermarket radiator the fans are wider than the core, but also shorter. Did some measuring and cut notches for the hoses and the drain.
I didn't like how open the shroud is on the big fan side. This is how it's done from the factory. So I added the aluminum piece to create a shroud around that outside edge.
It's riveted to the shroud.
I decided to use a dual 70amp relay board from Leash Electronics.
I had Windstar fans in my K5 and I remember I tried a 30amp breaker for the big fan and it kept tripping so I had to bump up to a 40amp breaker. I figured using 70amp relays would be keep the relays from being overtaxed. The big fan has a 40amp fuse and the small fan has a 30amp fuse.
I have temperature switches to active the fans.
I needed connectors for the relay activation spades. I figured out the bottom 2 slots on my 3-slot 56 series plugs lined up perfectly. I just shaved the third hole off which also gave it good clearance between the plug body and the relay board.
Here's where I mounted it.
I filled the back of the plugs with silicon to keep moisture out. I used the factory fan plugs and wires and ran a 6ga wire through an 80amp fuse to the feed side from the battery.
We'll see how this works on the trail next weekend.
Also had some fun decorating a junction block cover on the dash.
Realized the kids need to watch Back to the Future because they had no clue what a flux capacitor is.
looks good man. I had all sorts of heat issues before I went to the windstar fans several years back. Once I installed them I never had an issue again. Luckily the PCM can run both fans too so your install will get even cleaner with your LS swap. 
y5mgisi
1 ton status
Nice setup! Should work good!
Thanks guys! That's cool the LS can run them.
Haven't we talked about this before 
Looks good though.
Looks good though.
Yeah this is my third cooling fan iteration. Hopefully last.
What is the key tumbler lock on your dash for? Is that your ignition?
No, theft deterrence. There's one on each end. The panel won't come off if they're locked. Mostly worried about the gauges being stolen.
Good idea....
Made labels for the switches.
Ok, I'll bite, what does the "coffee" switch do? You have a damn coffee maker in that summabitch or what? 
Haha! I'd probably use it a lot if it did but it doesn't. That's just an unused switch at this time.
I thought someone might guess it was a coffee warmer.
I thought someone might guess it was a coffee warmer.
y5mgisi
1 ton status
I like all of it!
454Sub
5/8 ton status
Perfect nitrous activation switch.
Should label one the continuum transfunctioner.
Any questions as to its uses can be forwarded to Dremu.
Any questions as to its uses can be forwarded to Dremu.
I supposed if I was more clever, I could have made that switch on/off for the flux capacitor.
