Chevy SBC 350 2Pc Rms 168 Tooth 11" Internal Balance Heavy Duty Flexplate While the GM 8

While the GM 8

If your standard Bowtie block could handle 1500+ HP it would be Speedmaster's H1 engine block

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

This feature is sometimes called an air gap design

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

Chevy SBC 350 2Pc Rms 168 Tooth 11" Internal Balance Heavy Duty Flexplate While the GM 8Speedmaster 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.