Valve springs for boosted engine

[lowgmh1]

Hi what valve spring are good for a boosted engine done everything to my el but won't make good power
Now I've been told to do springs so any ideas

[staunchxr]

Mine has crow doubles and made 420 rwhp with no valve float, heard good things about atomic as well.
Try doing a search should be able to find something about it on here

cheers staunchxr

[ed40]

Anything over 300rwhp then you need springs IMHO. Your dyno print out should show where the car struggles.. post it up?