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The trans in your truck is probably a C6, a great HD trans (in its time) but also a big power sucker and no OD. I would at least hope it has a lock up TC but I don't know if they do or not.
If thats all your are hauling IMO you have more motor than you need, I am a tad bit biased I love the 300 and would only replace it with a 4BT.
If you want better FE get a manual trans a ZF5 would be perfect nice creeper 1st and a .70 overdrive. EOC is the the best way to improve FE manuals are much more eoc friendly.
22 mile trip last night 9.5 miles eoc. I would share the mpg I got on that trip, but no one would believe it.
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Because we are big dumb redneck Americans and we only want V8s that thunder and use lots of gas pushing our empty Super Duties down the highway at 100 MPH in the fast lane while warming our butts in heated leather seats and chowing down on double quarter pounders and texting on our cell phones. We cant understand non-V8 engines because that ain't whut NASCAR uses...
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Not this American.
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