JL8Jeff

iTrader: (14)

I tried searching for the information but couldn't find anything easily. How much boost would a P1SC make on a stock 2000 LS1 (ported TB as only mod) with the stock ATI 6" (or 5.75 I think) 6 rib crank pulley and a 3.7" 6 rib supercharger pulley? Would it be 8 lbs or higher? I want to keep boost down to start with and I'm thinking a 4" or bigger supercharger pulley would be safer. I have 3.4, 3.5 and 3.7" supercharger pulleys (6 rib) but I'd like to stay at 6 lbs or less to start. I know all motors are different so I'm looking for a basic ballpark idea.

kwiksilverz28

iTrader: (7)

My 98 P1SC with 6 rib, headers, cat back, and at sea level made 5.1# with a 3.7" pulley.

JL8Jeff

iTrader: (14)

Thanks for the response. Did you ever change pulleys and see what the different boost was?

One Bad Z

iTrader: (1)

3.2" 6-rib blower pulley & stock crank pulley made 8lbs on an '01 w/just a corsa catback exhaust.

kwiksilverz28

iTrader: (7)

Yes. 4.10 made 3psi with manifolds and a cut out. Did headers and 3.7 and got 5+. I am wondering if I do a cam, what I need to do to get about 6. I was a little disappointed with stock heads and cam and 5#. 407hp/406lbft.

v8juice

iTrader: (9)

3.0 pulley at about 9psi

JL8Jeff

iTrader: (14)

Thanks guys. I think my pulley selection will put me in the range I want to be in. Hopefully headers will be going on this coming weekend and then I can look more into the final setup.