i checked out crowers site and they said for a SOHC the amount varies for regrinding and only after they see your factory core. by factory core i assume they mean cam

i guess i could go to a junkyard and find an f22b2 and see if i can grab the cam out of it and send it in to them. i can't quite yank the cam out of my daily driver being that i need to use my car.

i guess what they do is they reduce the circles on the cam and that gives the lobes more lift and such.