Brian Tooley Racing GM/LS .660 Lift Platinum Valve Spring Kit

.660" Lift Dual Spring Kit for LS engines using stock rocker arms.

Includes dual polished springs
Titanium Retainers
Locators for Stock Guides
Valve Seals

155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coil bind @ 1.070" This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA.

This kit is For Stock Rockers
.660" Lift Platinum Spring Kit
Springs are Designed for use with Stock Rockers
For Heavier roller rockers they may require more spring pressure to maintain control of the valve train

We recommend a Higher Pressure spring for roller rocker applications