Something 250 to 260 @ 050 is a good fit.
Be sure to have a good valve spring.
I run Beehives (Hard to get under 200 on the seat)
but the old Isky springs that I set up
@ 160/165 on the seat work great and are
easier on the Cam lobe. I think 3105 number
but I am not sure of the number as it has...