Dartfreak,
This may or may not help you, I used Comp 995-16 springs on my "308" heads for my Lunati Voodoo cam.
COMP Cams Valve Springs 995-16
Granted this is a rollercammed 360 from 1990, so I'm using part #20200711 and have been for almost 4 years.
(I should've went with 20200712 now that I think about it, oh well)
Part #20200711 specs are as follows:
- Advertised Duration (Int/Exh): 270/279
- Duration @ .050 (Int/Exh): 219/227
- Gross Valve Lift (Int/Exh): .515/.530
- LSA/ICL: 112/106
- Valve Lash (Int/Exh): Hyd/Hyd
- RPM Range: 1800-5800
