[C-ERA03]

i wanted to swap some 4.10's in my truck here pretty quick. i got the 4.8L with 3.42's(?? i think) what should i expect or how noticable will this be? is it even safe to do?

 

[Black_Chrome]

MPG will go down quite a bit

 

[C-ERA03]

well it won't be happing too soon, especially cuz the gas rapings but the quicker take offs are what i'm lookin for.

 

[fullthrottledan]

less milage, higher revving engine on the highway, less top end. much better acceleratiuon. you need to make some sacrifices though.

 

[jebx]

3.73 might be a good compromise.

 

[SierraSport]

I have 3.73 , I like them alot over the stock 3.42 ..

At 70 I am right at 2000 rpm , nice cruising speed ..

 

[02denali]

i love my 3.90's.i have good launches and i do have some top end to.

 

[SierraSport]

I was thinking about doing 3.90 gears , but I thought it would be to much ... Im guessing the 3.90 would be fine ..

 

[03rado]

I'd say 3.73 or 3.90

 

[BuiltNotBought99]

I got 4.10s in my truck and I really like them. They are great off the line you can haul ass to any gas station.

 

[Hucks72]

i love my 3.90's.i have good launches and i do have some top end to.

where did you get your 3.90's from?