JDMSPEED 660" Dual Valve Spring Kit Steel Ret LS1/LS2/LS3/4.8/5.3/6.0


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Part Type: Valve Spring Kit
Engine Type: Gen III/IV
Max Lift: 660"
Kits ship standard with dual polished springs, locks and the following:
Titanium Retainers
Black Valve Seals
Spring specs are 155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coil bind @ 1.070"  
660" Lift Dual Spring Kit for LS engines using stock rocker arms.This kit will NOT fit LS9 engines  
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, etc,
this kit will also fit LS7 heads with approximately .045" of spring shim.