Vortech head question

[porkchop4]

how can you tell if your heads will except more lift than stock and is there any alternatives instead of machinig the block. I heard if you run beehive springs you don't have to worry about machinig the heads. Is this true

[little302]

Beehives are small dia. base, so ur good on not machining.. Do cut theheight on the valve seals down though.. you get too much lift and the retainer will hit and cause all sorts of malfunctions.