Chevy BBC 454 2Pc Rms 168 Tooth 11" External Balance Heavy Duty Flexplate durable Speedmaster aluminum crank hub

durable Speedmaster aluminum crank hub

The Speedmaster Turbo 400 TH400 Aluminum Competition Transmission is engineered for extreme performance applications

greater resistance to tooth shear

Minor machining may be required on some applications

Because they don't run off of your crank

Chevy BBC 454 2Pc Rms 168 Tooth 11" External Balance Heavy Duty Flexplate durable Speedmaster aluminum crank hubSpeedmaster 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.