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4.3 is a good motor and 285 HP is about twice what V8s put out in the 80s. We towed our Passport 199ML out to South Dakota and it had plenty of power. My problem was the truck wasn't properly setup for towing. It didn't have a transmission cooler. I saw trans temps in the 235 range once we got to western SD. Great truck in the flatlands of Illinois. I upgrader to the 5.3 with the tow package shortly after that trip
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