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LS Premium .660" Polished Double Spring Kit With Steel Retainers. This valve spring kit is excellent for high performance or racing use for up to .660" lift using stock rocker arms. This kit includes valve springs, steel retainers, valve locks, spring seats and valve seals.
Spring specs:
155 lbs @ 1.780"
380 lbs @ 1.180"
400 lbs @ 1.130"
coil bind @ 1.070"
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