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Leave it alone Dave. The factory set-up can't be beat if you're towing.The only real benefit to the V6 fan upgrade is if you're going to race the truck,and run a 180 thermostat and tune the truck,and you're not going to do either,lol
Faster engine rev from less drag. Not so much for the HP. It may not be the most noticeable gain but it does help. I’m actually contemplating doing an under drive pulley on my truck as well for the same reason. Really didn’t want to because it’s hot as heck in south Florida and I’m worried about not enough coolant flow during summer if I am hauling stuff around. Honestly I’ve been wanting just a stock size lighter weight but they don’t sell one
Now the old man in me comes out...
Yes but no. Reducing engine drag allows for faster off the line. Like stated the electric fan is not for the HP it’s for reducing engine drag. The clutch fan is negligible but is constant parasitic drag. If you would like to talk about things I’ve done to my truck feel free to private message me or look at my build list. The things I’ve done are definitely not “cheap and easy”. I’ve got decent knowledge about vehicles. An underdrive pulley is good for someone racing but not as valuable for someone like me who daily drives and off roads hence why I have not purchased it. My truck is lifted on 35s with the 6.4 intake manifold, long tube headers, already came factory with 3.92 gears and lsd. If I noticed better throttle response after doing the electric fan being lifted on 35s then it definitely helps
Nitrous is still relatively cheap and can give a very noticable gain
A 75 shot can be run fairly safely on the stock tune ,if you run 2 step colder plugs and keep the tank full of at least 91,even better if you can keep it full of 93/94.
