LS 660 Lift Dual Valve Spring Kit - Factory LS Casting Cylinder Head - Integrated Seat Seal
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Dual Spring Kit for Factory GM Casting Cylinder.
This kit is for a factory casting LS1, LS2, LS3, L92 with an OE style valve guide. Designed for 0.500 valve guide utilizing the factory 8mm valve and valve locks.
Specs:
Rated Valve Lift 0.660 inches
Installed Height 1.800 @ 166 lbs
Spring Rate: 403#/in
Solid Height 1.015
Spring OD 1.310"
Spring ID 0.680"
Kit includes:
Dual Valve Springs
Titanium Retainers
Integrated Spring Seat with Valve Stem Seal
8mm Valve Locks
Kit Details:
Manufactured in the USA
Premium Chrome Silicon Vanadium Spring Wire
Polished Isotropic Super Finishing & Cryo Treated
Titanium 6AL4V Grade 5 titanium retainers
Machined & Hardened and Black Oxide Precision Spring Seats