B&M ShiftPlus Electronic Shift Improver Kit GM 4L60E, 4L80E # BM70380 Rate_12 Spark Plugs

Spark Plugs

8740 chromoly

Nut Included:Yes

particularly big cams that tend to reduce low-end power and torque

The GM Licensed Tall LS valve covers were designed to fit LS1

B&M ShiftPlus Electronic Shift Improver Kit GM 4L60E, 4L80E # BM70380 Rate_12 Spark PlugsB&M ShiftPlus Electronic Shift Improver Kit GM 4L60E, 4L80E # BM70380 "Shift Improver, ShiftPlus Electronic, GM 4L60E, 4L80E, Each BM ShiftPlus Electronic Shift Improver Kits BM's ShiftPlus electronic shift improvers use vacuums or electronics to improve the characteristics of your transmission, and let you change settings as you drive. Great for performance, towing, and RV use, these shift improvers recalibrate your transmission in one of two ways: