Chevy SBC 350 2Pc Rms 168 Tooth 11" Internal Balance Heavy Duty Flexplate aluminum and 100 percent pressure-

aluminum and 100 percent pressure- tested to eliminate leak

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

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

Although the GM heads are good pieces

Chevy SBC 350 2Pc Rms 168 Tooth 11" Internal Balance Heavy Duty Flexplate aluminum and 100 percent pressure-Speedmaster 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.