Quote:
Originally Posted by tony_2018
What are your gains with the underdrive pulleys, are they the Lightweight?
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Unfortunately, the wind won't stop blowing long enough so I can get the truck out for some testing. So, I can't give you any data. I can tell it freed up some HP. AIRRAM's website says the underdrive is worth 7-8 hp, if I remember correctly. Yes, it is 3 pounds lighter than the OEM pulley. I weighed them both.
[edit] I've driven my truck without the belt turning the power steering pump. Above about 20 mph you can't tell the difference...