smokinsilverado

I have a 2000 single cab chevy silverado 4.8L. I have 3.23 in my truck right now and I'am looking to get some 3.73 or 4.10s in my truck. The want to get 4.10s but i do alot of highway driving, so i think iam going to get the 3.73. I've look everywhere for 3.73 but the think is i was told that i have an 8.6 axle and where i've looked i find 8.5 axle when i look for parts for my truck. Is there a difference between the two and if i get the 8.5 axle will it work on my truck.

GMCtrk

iTrader: (27)

It's an 8.6. What gear you go with depends on how tall your tire is.

trever1t

iTrader: (14)

yes ^^ true!

JoeGibbSilverado

iTrader: (9)

ive heard u can use the 8.5 gear, but something needs changed, someone will chime in, that knows more

Formulized94

iTrader: (68)

I have a 3.73 out of an 04-05 4x4 1/2 ton truck. I bought the complete rear and it ended up being bent. So now I am parting it out.

dlt76028

iTrader: (13)

do 3.90

smokinsilverado

thanks for the input guys

m3srt

iTrader: (2)

what size tires do u have ????

smokinsilverado

I have 20s

2005 Silverado

iTrader: (19)

How tall of tire is what he is asking, like 29 inch 30 inch 31 inch ect....

Dustin