I have two questions;

1. does anyone make UD pulleys for the 5.4L 3v

2. I tow a 18' trailer occasioanly will this affect my towing? engine temp?

Thanks

 

Troyer sells them.

 

Underdrive pulleys slows everything down including your cooling. I tow a camper and people told me not recommended. I could possibly overheat my truck while towing.

 

i have a set that im not using

 

Considering (last time i checked) the HD pulley was -25% and the WP pulley was +26%. Giving you 1% more cooling.

 

zero issues on my 9000lb 3/4 ton van towing my race trailer~5500lbs in the hills of pa on the hottest summer days-phil

 

do the gains justify the price? i thought the general consensus was that bolt on's don't do enough to warrant them unless you're a freak looking for the last extra HP.

 

UD pullies will help make you quicker right off the line, and you wont get that horrid high pitched squeal on high RPM downshifts. im thinking about getting a set.

 

I've been thinking about getting them too. I want to see my truck hit 15's and I think that will net the trick.

Also, if I'm not mistaken Troyer's page says they can help with towing so I'm sure he wouldn't sell them if they caused overheating.

 

like i said i have a set of used pullies ill let them go for $150 shipped

here is where i got them
click

 

according to the website it is underdriving the water pump and the carnk. wouldnt you have to put a smaller water pump pulley to speed it up?

 

I had them before I got the blower I sold them for $100, They are worth that I did tow a boat every weekend with no issuse.

 

I been doing a search on this. If I'm reading everything right. The crank pulley is smaller give you more torque and enlarge the water pump pulley for cooling. They are saying sometimes you have to increase idle speed. Also I read if you underdrive the water pump, it will slow the clutch fan which would cause overheating. Any opinions?

 

More stress on the power steering. Instead of adding idle speed the best way to do it is increase #/min flow in the tune via the pressure transducer on the power steering. But i really don't know of anyone that actually does that, except me.

 

I got a set of Motoblue pulleys I'll let go for $75 plus shipping.

http://www.rpmoutlet.com/04f150powerhyper.htm