Saginaw 4 speed trans out of a Camaro I believe. I’m no Saginaw expert so I have included pictures of the casting numbers. It has the single groove on the input shaft so the gears are 2.54, 1.80, 1.44, 1.0. There is a less common version of the single groove with a slightly different 3rd gear ratio also. Or so I have been told. Spins free. Other than that I don’t know as I have never opened it. I have no shifter or bell. Buyer pays shipping up to $85. I will supplement the cost after that. Thank you, Ryan.