Exceeds factory quality and installs in less than an hour. Coated black, this pulley looks very much like a stock pulley.

NOTE: PFYC recommends adding a transmission cooler when you upgrade your supercharger pulley. This will provide extra protection to your transmission under higher horsepower and torque situations. Also recommended to realize the full potential of the pulley and to get maximum throttle response are a cold-air intake and a cat-back exhaust with U-bend removal, all available here. These pulleys will only fit on factory nose drives and are finished in black zinc chromate coated steel. Please make certain you read the Q & A section below before choosing your pulley.

Also fits 2004-2007 Grand Prix, 2004-2005 Monte Carlo SS and 2004-2005 Impala SS.

NOTE: Care must be taken when replacing your pulley. Use the right tools and if necessary, get help from a friend or professional.

Q: Will the 3.25" or 3.00" pulley give me more horsepower?
A: Not necessarily. When using any pulley smaller than 3.4", a lot of additional heat is generated by the additional boost. This additional heat may cause detonation which in turn will cause knock retard, robbing you of horsepower. If you are not doing something to prevent the detonation caused by a higher temperature intake charge, we recommend you stick with the 3.4" pulley.

Q: What if I want the option of swapping pulley sizes but don't want the hassle of installing a Magnuson Nose Drive?
A: The Pulley Boys Qwikchange Pulley System is your answer. Installation of the hub is done just once and afterwards swapping pulleys is an easy 3 minute procedure. Even if you don't have an interest in swapping pulley sizes now, you may in the future and we recommend you take a close look at the Pulley Boys Qwikchange Pulley System. A link can be found in the Related Products section below.

Q: Do I need to include a puller to install and remove a pulley? Can't I just use my regular pulley removers to save some cash?
A: You could try, but you'd probably end up ruining your stock pulley and possibly damaging the entire nose drive, and then you'd have to buy the Magnuson Nose Drive to replace it. It's safer to use our tool. We cannot guarantee that your factory pulley will remain intact but we can ensure that your supercharger bearings will not take a beating if you use the tool properly.

Works as advertised - but you need special tools!, 9.14.2009

Reviewer: Stephen A (Aurora, CO)

I installed the 3.2" pulley on my '98 GTP. The installation was pretty difficult - don't kid yourself into thinking you can do this with anything short of the pulley tool or a hydraulic press (I used the latter). Even WITH these tools, don't be surprised if you damage your existing pulley. The HP gain is immediately noticeable. But, I didn't do this for the HP gain; I did this to remove the awful chatter coming from my supercharger snout. I rebuilt the snout with new bearings, a new coupler and new oil - it's now silent (it used to sound like rocks were rattling around in there). When taking the snout apart, I tried to remove the pulley with a bearing puller. This was a mistake - the edges of the pulley were dented during the process. I then took it to a machine shop and had it pressed off. Alas - I needed a new pulley. So, I hopped onto PFYC and bought the 3.2 - what an amazing difference. As I said, I did this to fix the horrible sounding supercharger. But, it's like I have a new car now! I have 112k miles on my GTP and I wish I would have done this sooner. I have not needed any additional mods to accommodate the HP gain. That might be because I live in Denver and am only recovering (more or less) the HP I lose as a result of the altitude. I still run the low-test gas (87 octane here) and have no noticeable problems at all.

3.0 inch pulley, 10.20.2007

Reviewer: Chris B (Laramie, WY)

Awesome upgrade!! For 2004+ first you need to move the battery, fuse box, and antifreeze overflow reservoir. Take out breather from shaft on SC, then put a 8mm machine screw with alan head in the shaft and use 6" claw pulley puller. Put antiseize on SC shaft and install the new pulley. Adds some cheap horsepower. Nice product.

3.4 pulley, 3.30.2007

Reviewer: DAVID R (LOCKPORT, NY)

I bought the 3.4 pulley and gator back belt and the computer and it was a great investment. This is a great deal lots of power for a little price. A good way to start your upgrade...

Bang for the buck, 1.4.2007

Reviewer: marcus p (fayetteville, NC)

I just installed my 3.2 inch pulley, the install was a little difficult, just to get the old pulley off but once you get it loose it comes off easy. But the result was dramatic, I recommend this product to everyone.

3.4 inch pulley, 11.28.2006

Reviewer: Matthew C (Eden Prairie, MN)

Its a great product installing it couldnt have been easier and wow what a amazing difference in horsepower. just like it says with about 30 hp difference!! I love it, its a great product and its built to last. Only thing is make sure you are gonna have enough supporting mods to kill the knock retard.

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