so check this out i got 3:73's in my truck now i was thinkin about gettin 4:10's. Whats the top speed of a truck with them and how much gas mileage is lost? and tell me what you guys would recommend! i have a 2002 silverado ECSB 5.3L! thanks

 

I am running 10's along with a 29 inch tire, have logged close to 140mph with plenty left... You lose a few mpg... Nothing to worry about imo

 

I lost about 3-4 mpg on the highway from 4.10s to 3.42s. With 31.5" tires the 4.10s drive way way better than the 3.42s. The truck was always out of the powerband with the 3.42s

 

i'm running 4.56s with a 31.6" tire and i'm getting 20.2mpg average
with a 29" tire i got around 18.5

 

would i see a good gain from 3:73's to 4:10's or should i go bigger? and also how much does the install cost y'all?

 

I went from 4.11 to 4.30 and Like it better over all.
Your top end is also going to depend on how much power your engine has. If its a stock engine you'll take all day to top 3rd anyway.
took my 4.11's to 134mph at 6450rpm in 3rd gear on 275/45/20" wheels. (gps confirmed)

 

go 4.30s or 4.56s to see a noticeable gain..

 

alright so i made my mind up i want to get 4:56's in my truck i have the stock 16" wheels my top speed wont be like 90 mph will it? sorry to bring back an old post!

 

oh and also how would my ET times be at the track?

 

i think your 60' is gonna go up in smoke.