8â³ spragless racing converter is custom built and designed for 400-800 HP and engines in the 327-522 cu. in. range. It offers the durability and reliability expected by any racer. The 8â spragless features make it very popular with the ProTree and Bracket racers. It is available in GM, Ford, and Chrysler models with stall range of 3500-7000 RPM. All of the 8â³ converters are available with a steel stator upgrade and a mechanical diode sprag can be installed for street drive race converters.