Chevy/GM TH350/TH350C Rebuild ATSG Tech Manual CD Rom. Start your rebuild here... This is a very well illustrated CD with valuable information on the tolerances that the TH350/C requires. It is the CD all the shops use; if you are planning on rebuilding your transmission yourself I would highly recommend owning one. It is extremely easy to follow and has useful illustrations. Start your rebuild out right with the information this CD provides it will guarantee a successful rebuild! This CD covers: General Description, Diagnosis, Teardown, Pump, Valve Body, Assembly, Specifications, 350 Supplement Information, Tech Bulletins.