Sorry guys I have been in the mountains for the last week. To answer a few questions it was built by CG Performance in Jefferson Oregon. Chuck did my 686 also and IMHO his headporting is some of the best out there. Not taking anything away from the big names but I have taken down my fairshare of 720's+ on my 686. The Dyno was the third or fourth pull and was still very rich, we were trying to get a decent tune on it so we could make minor adjustments at the track. It is a 812cc methanol bike. It has a Barker +8 crank, somewhere north of 14.5:1 compression, Megacycle X14 cam, The head is severly reworked with larger valves, custom intake with dual 38mm Lectrons. 1-4 override tranny, Barker lockup, 106mm bore with o-ring, no 5th gear and no reverse, Barker dragpipes with Looney cans so it is dune legal in Oregon. It made a few more HP by the time we got the a/f close. After we get some track time on it we will re-run it to see how much it loosened up. I can tell you with 100% certainty that a +6 swinger is nowhere near long enough to control it. I have a +12 being built for it now and we will see how it runs. It ran 52mph up the hill at the Rally in April and was one of the fastest bikes there but it won zero races due to the short swinger. Hopefully this answered some of the questions
Frank