35/12.50/20 to big for stock drive train???

[07chevyLT2]

I have a 2007 silverado, stock 5.3, 3.73 gears. My truck has a 6" Zone lift and I am running 33/12.50/18s and the truck still has a good amount of power but... they look small. Thinking about going to 35/12.50/20s but afraid they will take away alot of power. Anyone running 35/12.50/20? and did they take the balls out of your truck??

[bangbangskeetskeet]

I have a 2007 silverado, stock 5.3, 3.73 gears. My truck has a 6" Zone lift and I am running 33/12.50/18s and the truck still has a good amount of power but... they look small. Thinking about going to 35/12.50/20s but afraid they will take away alot of power. Anyone running 35/12.50/20? and did they take the balls out of your truck??

If you don't re-gear it's definitely gonna take the balls away. Ask Christian (Duct_Tape123) about going from big tires to small tires. Improved his mpg by 3+ and now he's just making a smoke show all across town.

[Botlfed]

Add a turbo, call it good

[lechez71]

a friend had 35s with 3.42 gears and the truck was a turd, had no pick up at all. i wouldnt recommend 35" tires with 3.73s. if you decide on the 35"s plan on changing gear ratio to 4.56 or 4.88

[bartjo06]

Word. 4.56s to bring is back to "stockish" and 4.88s to account for added rolling resistance. I'm leveled with 33s and would do 4.56s.

[BuiltZ71]

I have 35/12.50/20 on 99 z71..with the stock 3.73's it wasn't to bad,till I put the 4.88's in..it's like night and day,then add the built 6.0 with stall=one hell of a time!

[07chevyLT2]

What were your MPGs before and after the 4.88s?

[lechez71]

i bet the mpg are better with the 4.88 than the 3.73s. my neighbor has a blazer with a 700r4, 35" tires, 3.73 gears. he told me that it would downshift alot so he would keep it in 3rd, poor stock motor struggled to move that heavy truck , he now has 4.88s and the truck feels lighter.