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LSM valve springs anyone got any info?

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Old 09-26-2007, 10:27 PM
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Default LSM valve springs anyone got any info?

i recently got a set of lsm valve springs and titanium retainers. the springs are used and i plan on having them checked before i install them. they are tripple springs part # L700A. specs are .635" I.D., 1.680" O.D., installed 385# @ 2.100, open 1050# @ 1.200, bind 1.140". i'm not sure about spring specs so could anyone help me out as to what kind of max lift these are good for? do i need different spring seats with these springs or will the stockers work? until now i have never heard of lsm before, just wondering if anyone has any input on these spings. is anyone out there using them and what do they think?
Old 09-26-2007, 10:48 PM
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Looks like they are designed to run 900 lift solid roller. Some aftermarket heads can take that spring, but only a few. A stock head could be made to handle these springs with longer valves, spring shims and a custom rocker system.

Kurt
Old 09-26-2007, 11:16 PM
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so i take it these springs are a little over kill for my set up and won't work without major modification? i'm gonna be running ported 806 heads with a t-rex cam and hydraulic lifters.
Old 09-27-2007, 12:34 AM
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Originally Posted by bigchuck34
so i take it these springs are a little over kill for my set up and won't work without major modification? i'm gonna be running ported 806 heads with a t-rex cam and hydraulic lifters.
Just a little, don't use them
Old 09-27-2007, 04:25 PM
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LSM is awesome. But, those springs are heinously overkill for your setup. Get some Patriot Gold/PRC Duals or Comp 921s.
Old 09-27-2007, 06:37 PM
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yeah probly gonna go with the patriot's i just picked these up hoping they would work because i got them cheap on ebay and i figured wtf.
Old 09-28-2007, 12:07 AM
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Thoes would kill hyd. lifters, not to mention what they have on the seat, is what the PRC/Patriot springs have open.




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