0steel, 23-1/2 in. O/a length, 7-1/4 in. O/a width, 5 in. O/a height, 4 intake ports 1-1/4 in. Dia, 5 exhaust ports 1-1/4 in. Dia, 9 mtg holes 7/16 in., 1 exhaust flange 2-1/8 in. Diameter hole, 2 bolt holes 7/16 in. Dia, spaced 3-3/8 in. Center to center