Just wondering who all has 4:10 gears and what year motor tire size and what gas mileage you get. I am still wanting to go to 4:10 but keep on hearing mixed reviews about it will help or it will hurt my gas mileage. Since i went with bigger tires.

 

Hey hunt for game, I have a 2001 with the 5.3 with 35" tires and 4.56 gears. I get around 15mpg if I cruise. I didnt see a huge gain over the 3.42 that it used to have when I still had a 35" tall tire as far as mpgs. But overall driveability as far as downshifting to make it up hills on the freeway, and acceleration was worth it. Also I would reccomend a tuner to adjust for the gears. I have a superchips and love it. I had a hypertech and it was junk. It wouldn't turn off the abs light that comes on from the different gear size. Diablo sport is also excellent.

 

Thanks yeah i have a custom tune so i would have them take care of changing the settings.

 

Well if you run 4:10's and have around a 33 tall tire or so it would be about the same as running 3:73. I put 33's on my truck and it hurt the bottom end a little with 3:73's I think it is about the same as running 3:42's

 

part of an racing tech post at another forum of mine..

 

Hey thanks guys that should help.

 

I have 4.10's with 32 inch tires, a 5.3 engine all wraped in a 2004 body. I mostly do small town driving around 30 miles and hour with stops signs about every1/4 mile and i make a lot of truns and what not. Im getting about 16.0 mpgs right now. But whenI do take it to the highwayIm guessing around 18+ im impressed with it. Next time im on the HighwayI will watch it for you.

BTW i do love the 4.10'sI do a little towing mostly snowmibiles so far. And it towes like a champ.