small block or big block and where do you live? I have an e40d out of a F-350 5.8. Has something like 25000 original miles on it. Torque convertor and all 500.00. You should probably expect to pay around 1000.00. Check out the local salvage yards and by all means get a few quotes on yours. It may just be a torque convertor or something that can be repaired.