Sorry I don't have that smooth idler pulley number any more. I got the numbers initially from Vortech themselves. Vortech didn't have the NAPA part # for the smooth idler and gave me a different number but the NAPA guy was able to cross reference it and gave me a number similar to the one for the grooved idler. One thing to note is that NAPA part numbers can be the same for different types of pulleys ... when I opened the 2 boxes for the grooved idler pulley, 1 was plastic and the other was metal (about twice as heavy). I would make sure they are both the same and would recommend getting the plastic over the metal.

 

Why the plastic over the metal? Also, what do you think could be the cause of my take-off squeal? Could pulley's cause a squeal?

 

The plastic is just as durable as the metal pulley but weigh significantly less. Never understimate the premise of rotational mass, plus the stock pulleys are plastic as well...

I doubt the take-off squeal is related to the pulley. Most of the time it will be purely belt related even if the belt is plenty tight. Have you checked the condition of your belt? Are you using the one that came with the Vortech kit or did you upgrade to a Gates belt? I would definitely recommend changing over to a Gates belt if you haven't already and then keep the current on in the trunk just in case.

 

Do you remember the pricing for the pulley's? Just want to make sure the Napa guys get it right. I know the stock pulleys are made by Dayco. Btw, I have a Goodyear Gatorback belt. Not as good as the Gates, but it hasn't slipped after tightening for me.

 

I want to say the pulleys were around $17 a piece. The NAPA guy should be able to cross reference the Dayco part number to find a match, that's what they did for me.
If you are going to replace the pulleys anyways, try that and if the squeel doesn't go away I would try going with a Gates belt...

 

I got one of the bearings today, but it doesn't look like the ones that is in your pictures. Is this one or did they send me the wrong part?

 

Yep, that's a jackshaft bearing.

 

So with the plastic pulleys, will I get some added benefit? More power, hopefully?

 

If you are replacing the stock Vortech pulleys, you will be replacing apples with apples. It's just one of the age old controversies of the effect of weight on rotational mass. It's basically the same as replacing the crank shaft pulley with a lightweight replacement.

Imagine your front tire suspended off the ground (while still mounted to the car) with the stock wheel and you try to spin it fast by hand. Next imagine spinning that same wheel with it being made of plastic (much lighter)... It will be much easier for you to accelerate the rotation of the wheel from a start and it will be easier to decelerate the wheel to a stop.