The defining feature of the engine appears (to me) to be the top of the engine/head that has the structural reinforcement taper beginning at the radiator connection and extending the entire length. The taper is not a feature on every car. On the L29 Cord, the taper only goes half way. This one goes the whole length. And, it is different than the taper on the Auburns that quickly rise up to the radiator connection and then taper down the entire length. Tried Google image search but it's not working (engines are too complicated for AI at this point LOL).
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The defining feature of the engine appears (to me) to be the top of the engine/head that has the structural reinforcement taper beginning at the radiator connection and extending the entire length. The taper is not a feature on every car. On the L29 Cord, the taper only goes half way. This one goes all the whole length. And, it is different than the taper on the Auburns that quickly rise up to the radiator connection and then taper down the entire length. Tried Google image search but it's not working (engines are too complicated for AI at this point LOL).