The average 408...

I went to the shop lase week and he still had the dyno sheet saved on his computer. He did about 10 different pulls, this one shows a peak horsepower of 533 @ 5900 RPM. Peak torque is 513 @ 5100 RPM...

He didn't print me out the one before this one where he made a jet change, and I got 520 FT LBS. Anyways, heres the dyno chart.