Torque converter Allison Model TCL 574 came off a good running Detroit diesel 8V-71, has a drive plate for coupling to that. can also couple to a Cat Cummins or other engine. Not sure of the weight, can measure it after getting it out of its holding spot. bell housing size 20 3/4" bolt c-c SAE size 1 Commercial Sales Inc. is not a clearing house. We are a family owned Marine and Industrial Equipment and Hardware Warehouse Store in Fife Washington. We sell used, reconditioned and new old stock. We also do job shop repairs and fabrication work WARRANTY INFORMATION NO NEED FOR NEGATIVE OR NEUTRAL FEEDBACK. If there a problem, Contact us before leaving feedback. We try to be perfect but once in a while we make mistakes, but always take care of your e-mails and resolve all problems related with every part we sell. We want you completely satisfied and prefer that you contact us before leaving me any negative remarks. We try to package and ship next day but is not our only business. We may choose to reuse good boxes and be a Green seller. Money back guarantee if you are not happy with the part, you pay return shipping View more great items