I have read that stock is 60%. Now how reliable that is... Dunno
If I had a crank that wasn't modified (both mine have stuffers of some sort) I'd measure it and find out..
But from my past experiences I think 55% may be the way to go. With what this motor will be... I bet I'm WAY OFF from stock by the time I add up stuffers, wiseco piston etc....
Was just hoping for real world experience on the K5 specifically
Jonny. Any way you can call up the guys that did yours and ask what tpm range that was for?