Originally Posted by Sonic Blue 2V
I have a setup very similar to yours going on right now, prolly be a couple of weeks before it's running. I talked to ATI and the fellow was very helpful and knowledgable and said a 3" pulley will do fine on a P1SC. I have seen at least one guy make 500rwhp with a P1SC and you should get close. I'd predict 450-475 for ya.
Also, I think the 11cc pistons net more than 9:1 compression unless the combustion chambers have been messaged to lower compression. My machine shop says my 17cc pistons will be 8.9:1, but I've had the cc messaged and expecting 8.75:1.
I sure would like to know what boost you see with the 3" pulley. When will you have it running?
You might want to think about a upper intake and larger throttle body, you have all the other components to support the power you want but there's more to be had by replacing those fairly inexpensive components (compared to everything else you've spent :D )
Good luck