Then the 4th throw is at 6 o'clock.opposite number 1 throw. The 3rd throw is directly opposite which puts it at 9 o'clock. With the first crank throw at the twelve o'clock position, the second throw is at 3 o'clock. Looking at both crankshafts from what would be the front of the engine, they both are indexed the same. It seems logical that manufacturers index their crank throws to create the best balance condition. Now I understand that different manufacturers number their cylinders differently and that affects what the stated firing order will be. I don't have one of those cranks available to compare. Hey, it's all I had handy Anyway the Cad has a 15634278 firing order while the Chevy has a 18736542 firing order. One is a Cadillac and the other is an unmentionable on the Hamb Chevy. I looked at two different crankshafts I have. Had a thought buzzing around in my head and thought maybe some of you guys might pull some old cranks off the shelf and answer my question.
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