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Discussion Starter · #1 ·
Hey, I'm a first-time restorer working on an 1971 International ScoutII.

I need some help with my engine. The existing one, from what I've read, should be an IH 304. However, the numbers don't match and I need to make sure that's what it is before I replace or fix it. The number on the side of the engine block is: 151407 R3
Can anyone tell me what the engine is based off of the number?

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