440 Stealth Heads with Comp Cam Springs?

bremereric said
Our valve springs work great with hydraulic and solid cams up to .600" lift. See the "specifications" table below for more detailed information on these. We offer them in either singles or complete sets of 16. Valve Spring Type: Single with Damper. Recommended for maximum .600" lift.
Valve Spring Closed (seat) Pressure: Approx. 130 pounds @ 1.875" installed height
Valve Spring Open Pressure Approx. 330 pounds @ 1.275" (.600" lift.)
Valve Spring Inner Diameter: 1.050"
Valve Spring Maximum Lift: .600"
Valve Spring Coil Bind Height: 1.130"
Valve Spring Outer Diameter: 1.550"
Valve Spring Free Height 2.400"
Valve Spring Installed Height: 1.875"
Valve Spring Wire Diameter: .202"
Valve Spring Number of Coils: 5.5

who's roller lifter are you running ?

also that source spring is lighter than the recommended spring so I would be changing them out .

there are a couple issues you need to check , coil bind AND is your retainer hitting the top of the valveguide/seal at full lift . If the source head is good for .600 lift you are scarey close at .578, especially if it goes into valve float with that spring at is too lite for your cam ...