How would 4.10s on stock wheels/tires do? Better/worse on mpg?

 

After lifting the truck and putting on bigger tires you will always get worse mpg's, due to more resistance. But you can get most of it back with optimum tuning and gearing. If I was you I would go with 4.56's, as previously stated, so that WHEN you put a 3" body lift on it and go to 35's you will be prepared and even if you never do, the extra power will make it more fun to drive and tow with.

 

I put 4.56's and I love it with 35's....

 

Depends on what kind of driving you do. Around town, you would probably get better mileage, on the freeway, not so much so.

 

it is.... the 3.55 gearing robs the power from the drivetrain... 4.10 or 4.56 gears deliver more of that power to the ground... with the lift you have more wind resistance and bigger tires change the gear ratio as well as add weight so the 4.56 gears with the 33" tires might not be a bad idea... especially if you drive up a lot of hills or tow.

 

@ 97_ram1500 I assume the plenum has been checked?

 

33" and 4.56 are perfect. Gained MPG and tons of power.

 

What did you guys do about front axels with the 4.56 gears ?

 

Get thick cut if you don't want a locker, and re-use the stock carrier.

 

Going from 3.55 tp 4.56 required a new carrier. I think the cutoff is after 3.73 give or take. If you go 4.10 from 3.55 you will need a carrier.