Fred is spot on! This is what was referred to as an old Muncie 3 speed. Easy to rebuild and almost bullet proof. These are tough trannys. If you need more parts than just gaskets check drivetrain.com. They have all the hard parts for the SM318. Just look under Chevrolet/GMC trucks 1967 and older. Hope this helps.
Last edited by fixit1958; 10/01/2014 6:21 PM.
