Serving the community for over 38 years! Come Visit The Cleanest Shop Around! Towing Available. Owner, Sherman Allen, the Auto Doctor. Allen's Transmissions, which also operates under the name Allen's Rebuilt Transmissions, is located in Newport, Tennessee. This organization primarily operates in the Automotive Transmission Repair Shops business / industry within the Automotive Repair, Services and Parking sector. This organization has been operating for approximately 42 years. Allen's Transmissions is estimated to generate $660,000 in annual revenues, and employs approximately 8 people at this single location.