The performance converter kit is designed to fit either Sonnax stator GM-ST-082 or GM-ST-086, along with a sprag cartridge GM-CS-3 that fits the GM 4L60-E stator shaft spline. Instructions are provided to cut and weld the 245mm turbine to accept the turbine hub.

  • Improved acceleration and throttle response
  • Adapts the popular GM 245mm convertercore
  • Includes heavy duty front cover
  • Fits 9.674" (245mm), 11.062" (281mm) and 11.500" (292mm) flexplate bolt patterns
  • Weld-on pilot adapts to many applications
  • Chromoly steel turbine and impeller hubs

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