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| In the 8820 combines from 1981 models on, the 466 got the P series injection pump to raise power to use the 1243 corn head. They will all have the correct large bolt pattern. You will need to change water pump, oil pan with proper oil pump pickup, dipstick and maybe the valve cover. There are late 6620 and 7720 engines with the correct bolt pattern but not built with the P pump or intercoolers. The P pump can NOT be installed on those engines, will not fit. Hope this helps. | |
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A good JD 466 engine?
