My posts are pretty dull compared to speedweek. The user's manual can be downloaded from the net without buying the program. I will buy the software after payday. The current task is to collect data to put into the program. All of the intake cams are measured and now I am doing the exhaust cams. This is Zeppo. It is the companion to intake cam Larry and I have been running it for years. The lobe centerline should be 105 and it is 91. The duration should be 244 and it is 238, just like Larry.
The overlap is 47 degrees with a 94 degree lobe center angle and 238 duration, all at .050 This might seem to be pretty tight. The Suzuki 1000cc GSXR runs a 90 lobe center angle with 80 overlap, so the cams might be out of spec, but not so far off as to be unheard of. The Suzi has more duration, at 260 on both cams, so that might be how they make it work. Both lift vs crank angle charts and the cam card are copied and sent to the grinder. I am asking for a new set under warranty. They clearly screwed up when they made mine.
These cams acted like ones with a lot of overlap, in hindsight. A simple change such as going from one style of glasspak muffler to another yielded 8 HP. Also, any sort of restrictive exhaust baffle caused horrible reversion problems. Intake tuning was critical, too. It had to be spot on to get HP. Almost all of those over 200 dyno pulls were figuring this stuff out. I am an idiot for not checking these cams during the initial install and a much wiser guy 'cause I did not. They taught me a lot and at the very end I was able to get 90 HP from the motor.