Oldsmobile 400 425 455 2PC RMS 166 Tooth DNA® Billet SFI Flexplate The Speedmaster shift selector shaft

The Speedmaster shift selector shaft is built with sturdy

although slightly taller

the stock accessories may not run at the same speed as originally designed

The Speedmaster shift selector shaft uses an O-ring to prevent leakage from GM TH400 cases

you will need housing ends to complete your project

Oldsmobile 400 425 455 2PC RMS 166 Tooth DNA® Billet SFI Flexplate The Speedmaster shift selector shaftSpeedmaster flexplates are the best on the market, made from 4340 round bar to exact tolerances. This one piece billet steel flexplate offers the strongest gear teeth, the least runout, and best longevity on the market. Every Speedmaster flexplate is 29. 2 SFI Approved and will withstand the extreme power and rpm of your performance application.