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Item descrition
660" Lift Dual Spring Kit for LS engines using stock rockers.
Complete Kit includes dual valve springs, locks and the following:
Chromoly Steel Retainers
Locators for stock Guides
Blue or black valve seals
Valve locks
Package Include:
.660 Lift Dual Valve Springs (16)
Steel Retainers (16)
Spring Locators for stock guides (16)
Valve Stem Seal Set (16)
Locks (33)
Professional Installation is Highly Recommended (No Instruction Included)