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i have 3 7.3. a 99 350 dump just did the tranny its got 132,000 on it, i was plowing in 2wd for 3 snow storms. a 99 550 dump with 118 and a 2000 550 dump with 120 all run good better than my 04 450 dump with a 6.0 it has 85,000 has more power loaded and pulling a trailer but had to fix a lot more than the 7.3
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