Flat cam lobe, what cam now

I think younggun2.0 ran the comp 294S (standard 294 magnum solid) in his flat topped 383 with edelbrock heads--I know you have different heads, but tuned right, it would probably run well. The lift is significantly lower, but to be perfectly honest, unless your heads were very well prepped and flowed, they probably stall out around .550 anyway...