The Stovebolt Site Forums The Parking Lot Big Bolts 1937 GMC COE F-33HD...3B?....Spanky?

My second edition is kind of confusing. The 286 is illustrated with the section that has tappets, but then it is also listed along with a 239 and a 257 as having rockers. So I think it is safe to assume that it was an overhead engine. So the engine pictured could very well be original.