.660" Lift Dual Spring Kit for Gen V LT4 engines using stock rocker arms. Includes dual polished springs, matching LT4 specific titanium retainers, LT4 specific locators for stock guides, locks and seals.
Spring specs are 155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coild bind @ 1.070"
This is a drop in spring kit for Gen V LT4 engines, WILL NOT FIT OTHER GEN V ENGINES, SEE SK007
