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LS1 or 05+ E-fans for 03 2500 HD?

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Old 07-05-2009, 02:21 PM
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Default LS1 or 05+ E-fans for 03 2500 HD?

Which fans should I get for my 03 HD. It has the 6.0 liter, auto trans, and the 34" radiator, 168000 miles and is bone stock. I have a lawn service and get in and out of my truck 15 to 20 times a day and usually dont drive more than 2to 5 minutes to the next yard and like to start my truck a few minutes
before we leave each yard with the AC on to cool down the interior of the truck. so what would be a better choice even though one cost more than the other. BTW It gets 100+ here in west Tx

Thanks, Charlie
Old 07-05-2009, 02:40 PM
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I think you might not be happy with either. There was a thread a bit ago about people towing recommending staying with the clutch fan.
Old 07-05-2009, 03:10 PM
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05 fans will fit perfectly on a 34" rad. Run a cooler t-stat and make sure your fans turn on when you want. They'll do you well.

You can also wire a switch in to have your fans manually turn on/off when the motor isn't running. Will have to be wired into your harness though.
Old 07-05-2009, 08:53 PM
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Do I need to get a nelson harness and a tune for the 05+ fans?
Old 07-05-2009, 09:15 PM
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Originally Posted by cvcook
Do I need to get a nelson harness and a tune for the 05+ fans?
If you do it that way, it is virtually plug and play.
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