Chevy SBC 350 2Pc Rms 168 Tooth 11" Internal Balance Heavy Duty Flexplate and the reverse lockout mechanism

and the reverse lockout mechanism eliminates the chance of transmission damage from accidentally shifting into reverse

While the GM 8

Featuring a boltin EFI downdraft injection system and complete serpentine drive kit

Speedmaster has designed these pinion support stud kits to offer maximum clamping force and unmatched reliability

This feature is sometimes called an air gap design

Chevy SBC 350 2Pc Rms 168 Tooth 11" Internal Balance Heavy Duty Flexplate and the reverse lockout mechanismSpeedmaster flexplates make excellent upgrades to your stock design. They feature extra thick steel that's double welded to the ring gear for added strength. Speedmaster flexplates will withstand the extreme power and rpm of today's engines.