Are these SuperTech Valve Springs overkill?

[JCL84]

So I have these valve springs that came with the car I purchased but I am thinking that they are overkill for the goals I have in mind. The specs on these things are on the chart below. Part# SPR-M1009D. I have 272 cams in mind but not sure which brand yet. Do you guys think I need to downgrade a little bit and get different valvesprings?

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Oh and the rest of my mods are 750cc injectors, MHI 20g turbo, Punishment racing FMIC, Fuel pressure regulator, Full Blown Dual fuel pump hanger, 3in exhaust, 6 puck clutch, I will be using DSM link v3 but that I still need to purchase.

I am probably going with bigger injectors because I want to run E85.

 

[boost97gst]

I dont see a reason to ever downgrade a valve spring. Or at least i have never heard of that being done. It just gives you more peace of mind: no valve float for you! Plus, lets say you want kelford's 272 camshaft. You will need heavy springs. I mean, theyre not mandatory but i certainly would want a dual spring or something much stiffer than stock with a Kelford 272.

Keep 'em

 

[JCL84]

Im worried about one thing if I install these. Ive seen people get very technical when installing valve springs like measuring for valve spring height. Then I have seen people just slap valve springs on without doing any measuring. Do I have anything to worry about if I just install them as is?

 

[BogusSVO]

With as much seat pressure as they have, installing them a bit tall will lower them, You should measure them so you know what pressures you have.