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IIRC, stock boost was max at about 19 psi for that year of 7.3, assuming you didn't get surge pulling a hill. I've done some mild mods and have seen close to 28 psi with no surge in TX hill country. But yeah, the trans doesn't have enough gears or cooling so a '6.0' cooler and gages are in order for serious towing.
We may get into a modern truck in the next year or so, just because...
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Dan and Rita
Prefer not to be hooked up in a RV park
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