No, the IHC 304 and AMC 304 are two completely different animals, and as most say in the IHC cummunity, "the only similarity would be a handful of bolts".
International owned their own coal mines and steel mills and casted their own engines. Though their had been an AMC engine in a Scout (258), they generally used their own engines, with another exception being the Nissan SD33(T). FYI, somewhat on-topic; It has also been said that you can find some IH casting in MOPAR heads from the Vietnam era, where IHC may have helped MOPAR along during a time of steel shortage.
---No, the International and AMC have two completely different bolt patterns. AMC's 304 was built by AMC and the IH 304 was built by IH. Furthermore, the IH 727 was built to IH's specs, so more than the extra steels and clutches, tighter tolerances and bolt pattern will make it different. The throttle operates a linkage that mounts to the transmission and operates a throttle lever on the transmission, which in turn operates the valve body. In other words, the Chrysler 727 is vacuum modulated and the IH 727 is mechanical. You'll never get it to run right without the linkage and I hope you took time to unbolt rather than cut parts out with a torch. ---As for torque converters, I have no idea what would/wouldn't work with AMC. AFAIK, the only Chrysler torque converter that works on an IH 727, when bolting to an IH 304, is the 10". It all depends on which engine the 72 Scout had. If the 72 Scout had a 258 6-cylinder engine, which was made by AMC, then the transmission will have the same bolt pattern as the AMC 304. It was a stock engine available in the Scouts.
Try Auto Zone.com I have overstayed my welcome there.
Of course.
IH 304 V8 Firing Order1-8-4-3-6-5-7-2 (Timed on #8) Or as some prefer, 8-4-3-6-5-7-2-1
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that technically doesn't have a real answer but my guess is ih 4
According to my manual its 5.5 qts for the gas engine and 7.5 qts for the diesel.
Try a Case-IH dealership.
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Delo 400 or Rotella are good tractor oils.
International Harvester (IH) was founded in 1847 as the McCormick Harvesting Machine Company in Chicago. The first IH tractor was released in 1926.
30 weight, we use Case IH motor oil 30 weight.