Bill..........Old Scrambler here..........Bonneville with you and SamAuto would be GREAT
. Easiest way to run is RWYB with Joe. 2010 or newer Snell sticker in your helmet, gauntlet gloves, non-vented leathers and riding boots.........your in
Put a 120/90 or taller 18-inch or 19-inch tire on the rear. Biggest countershaft sprocket and smallest rear sprocket. Recommend 520 chain. Smaller jets (several sizes) for altitude and bring an airbox to try. Remove the tail-light and bring some shocks.
http://www.rbracing-rsr.com/gearspeed.html Somewhat reliable to calculate speed at given rpms.........consider the jweeks advice on the torque converter.
Treat the first half-mile as a Sunday ride up to 120-mph or so....NO TIRE SLIPPAGE.......then it gets serious with best rider-tuck and watch for the flags at the end of the timed mile. I figure you should be going 150-ish if motor and gearing are good. Slowly back-off the throttle and ease your tuck to wind-brake. You should not need to use the brakes until back at the pits. You may want to remove the front brakes and bring a seat that allows you to slide back and rest your helmet on the tank. A set of low-bars or clip-ons would also help.
On the AMA web-site look for the supplemental racing rules. If you want to enter a class for a record, I suggest 1000cc Modified Classic Gas..............with any kind of fairing or tilted headlamp it would be 1000cc Modified Partial Streamliner Classic Gas. You have to buy the gas on-site and have the tank sealed. Any other gas puts you in the fuel category.
We party some...........but get up at 5:30 for breakfast and 20-minute drive to the pits......10 minutes paved & 10 minutes on the salt. First runs are at 7:AM when the temps are cool. You, Joe and my Tiger Cub would be running the basic short-course on Sunday and Monday. Start at the 1-mile. I plan to move to the 0-start with my CB750 build in the 750cc Modified Classic Gas.