I have a basic heads/cam/intake 302. On these hot summer days I only see 8 psi, but on a cold morning I see 10-11. I started off seeing about 5 psi, then I had a smaller 2.75" blower pulley made by ASP, and saw 6.5-7 psi. Then I added a crank pulley from an Grand Marquis and that is where I am now. I have no powerpipe. Nobody makes one for the 1000 yet.
A guy down the street from me has a fairly stock 4.6 GT and he sees 13 psi with all the stock pulleys!
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