You should make 550 with the right parts, I would leave the heads alone for that goal. If you are trying to stab a 230 @.050 hydraulic roller with an rpm intake than probably not, but a good single plane with a solid ft in the mid 250s @ .050 or better with .580 lift and you should be good.
I'm going roller. Whether solid or hydraulic. I'm hoping the Trick Flow single plane will be re-released. I saw an Australian website claim they expect it in June. Hoping we get it here.
