Alright.. After numerous posts, and hours of searching the boards about valve spring pressures, I think i have it figured out and wanna run it by some one else.
I'm running a 224/230, .503/.510 lift. The bottom end is a low compression set up for boost. i plan on running 15+ pounds of boost from a T76 turbo.

I called trickflow to see what they had to say about valve spring seat pressures, they responded with this:
For every pound of boost you need to add 1-1.5lbs of seat psi over what the camshaft manufacturer recommends for naturally aspirated set ups...

CompCams specs the 986 springs for that cam. Seat pressure on these is 132. So i figure to be safe running up to 19/20 pounds of boost, to be some wher around 150 on the seat pressure. The 985 springs have a seat pressure of 165@1.75 installed height. When i install them, they are going to be slightly higher at 1.78 on the trickflow heads i have. (maybe not exact but close) If i were to calculate the seat pressure difference..
.03(taller) x 333 (rate) = 9.99
165 (seat#) - 9.99 = 155.01

Does this sound right, I wanna make sure i'm taking everything into concideration before i order.

 

Yes that's right.