Sonnax now offers a heavy-duty intermediate clutch outer sprag race. The company says it is a direct replacement for GM 4L80/85-E transmissions and is easily adapted to TH400 units. According to Sonnax, this part (no. 34663HD-02) guards against sprag failure in these transmissions, improves sprag element engagement and rollover resistance in all stock and performance The post Sonnax Offers Intermediate Clutch Outer Sprag Race for GM Transmissions appeared first on Transmission Digest.
