John2005

iTrader: (4)

I am going to be installing my vortech v9-g on my car this weekend or next and am wondering what the stock size pulley is that comes on it. Is it the 3.125 that is currently on it that gives you the 5-6 pounds or a different size. Also I am stock minus exhaust and am looking to have 7-8 pounds since I have read that is safe on our stock block and now I am wondering what pulley size would produce that? Also is there any company that produces after market pulleys for the vortech v9-g.

John2005

iTrader: (4)

bump anyone?

2001WS6Vert

The 3.125 is the stock pulley. 2.75 should net you 7-8 lbs. Reichard racing will sell you pulleys designed with cross grooves in them for better grip.

John2005

iTrader: (4)

Thanks, it came with two pulleys and the other one didn't say its number on it so I will have to measure it. It was a metal or polished one and not a vortech pulley afaik.

John2005

iTrader: (4)

Well I emailed vortech just to make sure bc I remembered the guy I bought the kit from saying my other pulley made 12 pounds and it looked like a 2.75. The vortech guy said. The stock pulley on the 98-02 F Body non-cooled kit is a 3.70". this kit makes 5-6 lbs. on a stock engine. The stock pulley on the 98-02 F Body after cooled kit is a 3.12". The after cooled kit makes 8-9 lbs. on a stock engine.

ss1

iTrader: (32)

Play it safe and start with the 3.12" pulley. There really isn't an exact science to tell which pulley will give you exact boost mumbers. Save the 2.75" for if you ever decide to change the cam or put headers on the car as you'll most likely see a drop in boost. Right now, mine makes just over 7psi with a 2.65" pulley.

John2005

iTrader: (4)

I'm not 100% sure its a 2.75 I haven't measured it yet. I will never cam it or put headers on it. I want to be able to return it to stock later because I want an 02 with less than 50k on the clock later down the road and know mine won't sell for more just because I put more parts on them and don't want to have to pull the headers and cam out and return that to stock also to be able to sell it. Thanks for the info . I am just hoping for around 425hp with 8 pounds of boost. Not trying to have crazy hp. I want it to be a stable daily driver and be able to go to the track and run low 12's high 11's once or twice every month.