I gave the wrong impression also… it’s a 97 1/2 ton with the 5.7, I was checking Gates’ catalog for a heavy duty cross reference and found the 2000 w3500 to have a 5.7 but with a smooth pulley.Sorry if I gave the wrong impression - that smooth idler pulley from the hydraulic kit is off a 2010 6.0 gas engine. It's an extra idler that is included when they install accessory bracketry to add a big hydraulic pump to the belt drive setup, and of course also a longer belt.
Back to your setup, I'd be concerned about getting the right parts. A smooth pulley where a grooved one belongs, or vice-versa, would probably not be good. You're working on a 2000 W3500 with the 5.7.. that's the tilt cab chassis right? All four of the tensioners that Rock shows for that application have the smooth pulley. Gates, Dayco, AC Delco, and Continental.
The Gates and AC Delco have notes that say "Fan, Alternator, Power Steering and Air Conditioning" - does your engine have any other belt-driven accessory besides those? Or is it possible you saw a grooved idler pulley and mis-remembered?
What makes it more confusing is if you look up the pulley separate from the tensioner - both smooth and ribbed are offered. Same goes for the idler pulley.
Richard
They claim their fleet tensioners have pulleys that are machined instead of molded plastic and better bearings.
I haven’t throughly studied them side by side but, If the tensioner part is the same but a “heavy duty” version I could use that and the plastic pulley but then I still have a plastic pulley.
This got me too thinking about billet pulley kits or maybe an under drive kit like l31express has mentioned in a couple posts, but haven’t found much in that direction besides the shiny chrome “serpentine retrofit” kits for $1500
I have ZERO “need” for anything heavy duty on this truck other than to say I have heavy duty things on my truck, but would like the possible benefit of a longer service life and reliability from said “heavy duty” things.
Lowered half ton 2wd daily driver.
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