On GMC trucks (what I have parts books for), 3728393 was used on non-power steering equipped 1/2, 3/4 and 1 ton trucks from second series 55 through 59. It was not used on 39-53 trucks. I don't have parts books for 54-55 first series, but if I were a betting man I'd bet those used the same parts as earlier models.
Last edited by Bill Hanlon; 04/21/20248:07 PM. Reason: spelling
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12 '52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
