BTR GEN V LT1 Platinum Dual Spring Kit – .660" Lift

For LT1, L83, L86 Gen V Engines with Stock Rockers – Will Not Fit LT4

BTR’s Platinum Dual Spring Kit has earned its reputation across a wide range of LS and LT builds, from mild to extreme. This Gen V version is built to drop into LT1, L83, and L86 applications using stock powdered metal valve guides and stock rocker arms. Designed for reliable performance in everything from daily drivers to 1000+ horsepower setups

Parts Included:

• 16 BTR SP001-1 valve springs
• 16 BTR SR008-1 retainers
• 16 SL505060-1 valve spring locators (+.015" thickness)
• 16 VS LS valve seals
• 32 VL7°8MM-1 locks
• 16 SS015-1 spring shims

Spring Specs:

• 155 lbs @ 1.780"
• 380 lbs @ 1.180"
• 400 lbs @ 1.130"
• Coil bind @ 1.070"