Our in-house TH400 transmission build. Consisting of new high-energy BorgWarner frictions, gaskets, billet manual valve body, 4L80E direct drum with 34-element sprag, 4L80E steel rollerized forward hub, rollerized output shaft, and deep pan. Torque converter sold separately. This transmission is rated for up to 1000 HP applications and comes with a 1-year unlimited-mile warranty. Also includes inspection and cleaning of all hard parts, and complimentary hot-flush while transmission is out.