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how can i tell the difference between a 360 and a 390? i was thinking about the 73 f100 i looked at and i thought it maybe a 360. would the 390 be the more common engine in this model or might it be a 360? as far as i know all the blocks say 352 on them a they look the same.........
I believe that the 360's have a key-way type notch and a half-moon cut-out on the crank flange (on the outer area) where the flywheel bolt's up. And the 390's just have the key-way cut.