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Valve spring pressure..Are these #'s OK?

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Old 10-28-2009, 09:04 AM
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Default Valve spring pressure..Are these #'s OK?

I am changing my h/c set up this winter to afr 205's & a Pat G specd cam.the hds are just about ready to be milled to 59cc.I just wnt to check & make sure the spring prsr is ok.Installed prsr is 150lbs ...@624 lift prsr is 390lbs ...@ .060 before coil bind prsr is 400lbs.Springs are prc dbls with 5k on em set on a .060 cup.Thanks for the help.We are used to alot of solid rlr set ups with 600 to 700 so I just wanted to check with this hyd rlr.
Old 10-28-2009, 09:17 AM
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Should be good to go (assuming it's not a crazy lobed camshaft)! Those pressures are right in line with what we advertise for those springs, again without knowing exact lift and installed height numbers.
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Old 10-28-2009, 09:23 AM
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Default Spring psr

Lift is 624/624 with lsl lobes.Installed ht is 1.780 to 1.810.THANKS !
Old 10-28-2009, 09:26 AM
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Originally Posted by wantsum410
Lift is 624/624 with lsl lobes.Installed ht is 1.780 to 1.810.THANKS !
Looks good to me! If you measured coil bind, it should be right about 1.090" or so, so you're about .06-.07" from coil bind. Let her eat!
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Old 10-28-2009, 09:30 AM
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Default Spring psr

Ye the #'s are without any shims .there will be a .060 cup on all & the rest will be shimmed to match.Pressure of 400lbs is at .060 before coil bind.Thanks for all the help!!




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