[Dominik]

H dog,

thanks. of course the real hp are a question of head porting.
dyno lists: full port and polish ,which is a little rough definition.

anyway, my engine builders in Florida agree with the 5-10% variation for the flywheel rating.

That in turn now results in 650 hp for my engine - great!

david,

dyno hours are on a daily basis in germany. about USD 800 per day, which isn't foo bad either. but we have only few dynos capable of handling big engines.

dominik