GM LS1-LS7 168 Tooth Flexplate SFI

The GM LS1-LS7 168 Tooth Flexplate SFI by J-W Performance is a crucial component for high-performance LS engine builds that utilize automatic transmissions. This flexplate acts as the vital link between the crankshaft and torque converter, effectively absorbing torsional vibrations and transferring engine power to the transmission. It is designed for enthusiasts building street machines, drag racing platforms, or daily-driven restorations.

The flexplate features a 168-tooth design that accommodates LS engine configurations, ensuring compatibility with OEM reluctor ring spacing for reliable engine management. Its SFI certification is essential for sanctioned racing and high-performance applications, confirming that it meets stringent safety standards for containment during catastrophic failures. The balanced construction minimizes vibration harmonics, which can lead to converter shudder, enhancing overall performance.

This flexplate is particularly beneficial for those undertaking LS engine swaps into first- and second-generation F-body Camaros and Firebirds. It is suitable for builds ranging from moderate 400-horsepower setups to extreme applications exceeding 1,000 horsepower with nitrous or forced induction. With its robust design, this flexplate ensures reliable starts and smooth engagement, making it an ideal choice for serious performance enthusiasts.