BTR 660 Platinum LS9 valve spring kit

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  • Regular price $309.95


.660" Lift Dual Spring Kit for LS9 engines using stock rocker arms.  Includes dual polished springs, locks and your choice of:

  • Titanium Retainers
  • Locators for Stock or Bronze Guides
  • Valve Seals

Includes dual polished springs, matching titanium retainers, your choice of locators for stock or bronze guides, locks and seals. Spring specs are 155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coil bind @ 1.070" This is a drop in spring kit for LS9 engines, will not fit other LS engines.