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Looking for advice on valve springs for this cam. Been looking at a few different spring sets and ive come down to these. unsure of the spring pressures with the rpm i am after. engine will see 9000-9500rpm. Bottom end will consist of
Custom aluminum rods 6.5375 inch long
cp pistons 1.110 c/h, 4.185 bore
Callies magnum xl 3.185 stroke crank. 38# weight.
LSX block
dry sump and so on and so on
Installed height can be whatever. Dont have the heads yet but i will be using rhs pro elite bare castings ported to fit this motor. Really can go wherever i want with springs that will fit the castings
I think NexTek springs are made by PSI. I have a solid roller and went with PAC. My application is a tight lash solid roller for the street and I want it to last. I've used NexTek springs and they are good but this time I went with PAC. The cam specs seem a odd for a high rpm short stroke app. I also recommend that you verify that the lifter's oil band doesn't come out of the oil gallery. You have nearly a 1/2" lobe lift. Those are some aggressive lobes and you will need some serious springs. Tell us more about your cylinder head/valvetrain setup.
Heads really wont be to special. Rhs pro elite bare castings ported to match my setup. My porter says he can give me 440cfm if i want it but i wont need it. Will use jesel shaft rockers, ti valves and retainers, lash caps, 1/2 inch pushrods. Just stout and light. Top that with a efi single plane and a accufab 6500 throttle body on a 4500 flange.
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Solid roller valve spring help needed 
