Jensales lists parts for the IDI engine, and the following URL https://www.jensales.com/pages/more-resources/international-diesel-engine-reference-guide.html contains links for the 6.9L NA (IH-442-A), the 7.3L NA (IH-444-A), and the 7.3L Turbo (IH-444-B). Just follow the links to a catalog page...
The "Diesel Diagnostics - 6.9L Engine" section from the 1986 CAR/TRUCK SHOP Manual shows the IP is timed at 1400 rpm--see attached PDF file. So, it would appear the 7.3L is timed at 2000 rpm, but the 6.9L is timed at 1400. I have the complete section (#25) if needed.
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