If you've ran one in a 550, how is it? Which grind (58a or 58b)? Performance notes, lope at idle, mileage, or other oddities? For conversation sake......
58a = .330'' lift / 255 deg duration @ .050'' lift
58b = .330'' lift / 265 deg '' '' ''
I'm refreshing my 550 with one of those ebay 605cc kits, ported cyl head, 4-1 exhaust, etc- so I'd like to have a good cam to go along with it. I called them today and the lady on the phone said that the 58b is more of a high RPM profile with a some loss in power down low.
This is a street bike, so I'd like to preserve low end grunt (what little there is), so I'm thinking the 58a profile would be better. Thoughts before I send in my core?