These have run like a champ for me, brand new they're $650, and with this graph they sell themselves:
before: 266whp on mbc, TBE, hiflo cat, intake, FMIC, and piping.
After: 305whp fuel pump, cams, alky and +1psi (pretty negligable)
Note the middle parts of the graph where power is +50whp @ 5000rpms and almost +60whp @ ~6000rpms! torque down low is +50wtq!
30k miles on them, still in my running car, coming out this weekend. These cams are PERFECT for the stock valvetrain, very very nice on the stock springs, retainers, and seats!
HKS 280
Advertised Duration - 280 deg
Effective Duration - 222 deg @ 1mm
Lift - 10.8mm Int / 10.2mm Exh
Lobe Centerlines - 110 deg Int / 110 deg Exh
LSA - 110 deg
Stock valve springs OK
compared to stock:
Factory EVO
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 109 deg Int /111 deg Exh
LSA - 110 deg