crash-harris
Breaker! Breaker!
And 55-65 mph cruising is down to about 500-550* 
Our dyno tests back at the 10th annual IDI Weekend revealed 8.5 to 9.5 degrees to be the sweet spot. Any more or less, and you give up performance. The thing you have to remember about playing with your fuel screw, is it messes with the internal timing curve as well, which pretty much messes up the entire calibration, but that's neither here nor there. Increasing your fuel rate will retard your timing, and reducing your fuel rate will advance your timing. A stock pump will give you about 1100 degrees EGT on a sustained grade with your foot to the floor. This will vary depending on elevation and cetane value.