Hi, Which part have we not explained clearly? We can of course at times get things wrong, but I can't quite understand the confusion here.
If I can be of any further assistance please just ask. Cheers
Thunderbike is full of it. They won't give any cam specs, and the graph they show (by their own admission, I traded a few emails with Graeme) is on an engine with headwork AND their cams. So the dyno runs (subjective anyway) are basically false adverstising. BS. 100%. No Fing way are cams alone are going to net those results.
You want 80-85hp? get a wiseco 904 and a set of mikuni flat slides. Period. Forget cams.
