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with 4.10's will be getting better mpg, but lets be honest we all dont have trucks because we were worried about gas mileage. with 33's you prob want at least 4.4?+ r&p..................the only way id stick to 4.10's is if you were going to run 31 inch tires
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Not even.. If the truck comes stock with 4.63's & 30" tires, going to 4.10's will kill the driveability of the truck. 31's are bigger than stock tires and you're going with less gearing.
This truck will not get out of it's own way at all. MPG will be much worse than stock since it won't be in the RPM band and will take a lot to get it moving.
Wrong gear choice.
For a SAS stick with 4.88/4.90 for 33" tires or less, 5.14/5.13 for 35" tires or less,
and 5.38's for larger than 35's.
That will keep the truck driving stock even with the larger tires and additional weight.
Your ratios will still be normal.
With those ratios 4.10's should be running a 27" tire...
Good luck bro.