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Can only speculate... but first, the reasoning behind the "standard" numbering... V8 crankshafts have two cylinders on each crankpin. This means that the shared sylinders need to be staggered by the width of the rod bearing.... in most v8 engines, the left bank (looking at the front) is staggered BEHIND the right bank... so the natural numbering system front to back (1-2-3-4-5-6-7-8) would dictate that the right bank is odd (1-3-5-7) and the left bank is even (2-4-6-8)... Furthermore, as another example, the Cadillac Northstar is different as it has the stagger such that the left bank is staggered in FRONT of the right, so the numbering starts with the front most cylinder (left).. left is odd, right is even... Now for Ford.. My thought is that when Ford made their first V8, (1932, compared that to Cadillac who was first in 1915), they also made a four cylinder engine that was used in tractors and trucks from 1932 through the 1940s. It was essentially one half of the Ford flathead V8... and my guess is that to keep parts markings common, this "new" numbering system was used... Just a guess.. J2
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