Chevy BBC 454 2Pc Rms 168 Tooth 11" External Balance Heavy Duty Flexplate Designed for engines producing up

Designed for engines producing up to 500hp

Whether you're rebuilding a stock engine or changing to valve springs that have more seat pressure

Convert any one-piece GM TH400 case into a two-piece case with our Speedmaster TH400 case adapter

All rockers feature large needle bearings and roller tips

except stock equipped EGR

Chevy BBC 454 2Pc Rms 168 Tooth 11" External Balance Heavy Duty Flexplate Designed for engines producing upSpeedmaster flexplates make excellent upgrades to your stock design. They feature extra thick steel that's double welded to the ring gear for added strength and anodized for corrosion resistance. Speedmaster flexplates will withstand the extreme power and rpm of today's engines.