Water pump failure destroys radiator

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gmachinz

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All I can say is I don't think I've ever heard/seen an electric fan setup do that.....just one more reason...lol
 

74 Shortbed

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I'll be going with electric fans on mine..
 

austinado16

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I hear you guys!

What do you think about this set up, for a 2012, 2500 Suburban:

$20 Hayden, adjustable fan controller from RockAuto
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$160 dual fan setup from RockAuto
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Would it be safe to say that if this set up cools a 6.0L engine in a 'burb, it'll be more than enough for a small block? The radiator core specs for the 2012 2500's are 34" wide, like what I've installed, and somewhere between 18 and 20 inches tall, depending on how they are measuring.
 
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gmachinz

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With 34" core width you have room for his monster setup if maximum cooling is what you're after.....but keep in mind this setup is very high end and $625....but it depends on what you're after. With those flexalite fans I don't think I'd trust that single relay w/adjustable temp probe-they are typically only accurate to +\- 10 degrees whereas temp switches are +\- 3 degrees.
 

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gmachinz

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I just built one for a guy last week and shipped it out-the dual 14" fans are rated at 6000 CFM and I would suggest running at least a 140A alternator as this setup will demand 36-38 amps on high speed. I build them as a parallel running 3-speed configuration using my dropping resistance style relay control harness. It measures (with side tabs trimmed off) 32x19x6.5 inches.
 

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austinado16

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That's a sweet set up. I was going to ask if the stock alternator was enough to handle the loads of dual fans, plus fuel pump, computers, and dual a/c systems........my hunch was; probably on the ragged edge of it's ability.

I wish I could afford to step up!
 

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Very nice setup.
 

gmachinz

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Well keep in mind that a lot of aftermarket fans don't draw as many amps as OEM style fans-so you may be ok with a stock alternator-as long as it's at least 100A. I prefer to use OEM fans mainly from a durability standpoint-the one in the pic is a 2010-up F150 ( I know, I know....lol) fan assembly from Motorcraft. It's the most powerful setup at 6000 CFM that I could find-and this thing is insane on high speed-I bet in neutral it'll pull you to at least 15 mph!
 

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If he is still running the stock CS130 as equipped (IIRC), they are on borrowed time brand new, without electric fans. The performance at idle would be very poor.
 

austinado16

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Yes, I'm still sporting a stock alternator.
 

austinado16

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All back together and runs fine again.

The reverse rotation 454 fan fits fine, but the leading edge of the blades is just slightly rearward of the shroud. I'd like to see the leading edges forward more, like maybe an inch.

The blade tips touch the top radiator hose if it's installed in the C shaped metal clamp that holds it to the shroud on the driver's side. For now I just have the hose sitting up on top of the clamp, but I'll have to resolve that situation.

I installed the baffle that closes off the driver's side end of the core, so that was a nice upgrade. A few photos for your viewing pleasure....
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da_raabi

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Man thats pretty cool. I still want to do that upgrade some day. Too bad the parts are just so hard to come by. NOBODY parts squares down here in FL anymore. They just aren't around.
 

austinado16

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It's become like that around here too. We don't have rust, so there are a ton of them on the road, mostly as pickups and Suburbans, but pretty much gone from the yards. I was really lucky last week; they had a 6.2 pickup, and 2 TBI Suburbans, one of which was 2WD, 454.

If you're interested, I still have enough parts to do one more conversion. I've got a fan shroud, the top closing panel, and 2 top radiator mount plates/brackets, and I have a 6.2 radiator. You'd need to take the radiator to a radiator shop and have your SB tanks soldered on.
 
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gmachinz

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That fan is a BIG upgrade vs stock that's for sure!
 

austinado16

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Yep. The only thing left to do is to use some sheet metal, attached to the existing shroud, in a hoop shape, to bring the shroud rearward over the first 1"-2" of the fan. That'll provide maximum draw through the radiator.
 

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