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Re: Would you swap a 454 for 6.0 to pull with?
Ok. Gonna throw my 02 here. We tow our boat (4500 # + 1000# gear) with either the 04 Yukon 6.0 or the '63 - 396 ci. I used to tow with a OBS Powerstroke CCLB 350. I have always "felt" it was easier towing with the 1. Powerstroke 2. Big block and lastly the 6.0. Mileage wise the diesel won every EVERY time by alot. That said, the 396 gets about the same mileage as the Yukon when towing. IMO, the bigger engines don't seem to have to work as hard as a smaller one due to longer strokes and heavier rotating assembly. I think a 5.3 is going to have to stay spooled for much longer and in higher rpm range to tow anywhere close to where a mild BB would be and it would probably use as much fuel if not more. The diesel is out of both categories due to way higher compression and higher BTU (energy) rating. I always feel like I'm beating on the 6.0 when towing yet I can comfortably lug the 396 all day long. Just way different set ups geared toward use for different purposes.
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