Hy 1938COE, the 361 engine was built by GMC, and as rustednuts has said it is one of a series of engines that range from a 278 cu. in. to a 503 cu. in.. These are an interesting group of engines, where most inline sixes can be broken down into two major pieces, (block and head), this series of engines can be broken down into three major pieces, crankcase, cylinder bank, and head, these engines also have a different firing order than their smaller cousins 142635 rather than the smaller engines 153624. According to my Motors manual your truck is probably a 600 series with that engine in it, hope that helps.
Last edited by 3B; 03/10/2012 5:24 PM.
