Rear wheel power on DynoJet chassis dyno.
Didn't do much tuning, just checked A/F to make sure it looked ok.. It was a bit rich, so I jetted down two jet sizes in the primary, and A/F was abour 12.4:1
Uncorrected Denver Altitude 468HP@6,700 RPM, 522ft/lbs @ 3,900 RPM (bottom of the pull recording?)
SAE Corrected 557 hp, 621 ft/lbs