mred

iTrader: (5)

i know the gears in my truck are not 3.73s could possibly be 3.42s but i highly doubt it.
3.42 to 3.73 i would not see a big difference in rpm drop.
anyways
i do have a
275/55/17
5.3
reg cab short bed
2100 rpm is 78-80
what gear would this be?
is there any way to tell with the in glove box data sticker?
i am really thinking it is 3.23s, for one its a DOG... lol
my 03 ran like a *****,and it had 3.73,but the 03 had different cam (stock) different ecm,etc etc
both trucks have tunes in them as well
thanks
Ed

14psisupra

iTrader: (1)

yea sounds like a 3.23 like me

viciousknid

iTrader: (8)

you can look up gm gear RPO codes online and then just check the RPO codes in the glove box

mred

iTrader: (5)

well the VIN give me the info as well?

viciousknid

iTrader: (8)

no. the RPO code in the glove box is what you need.
GU2 2:73 ratio

GU4 3: 08 ratio

GU5 3:23 ratio

GU6 3:42 ratio

GT4 3:73 ratio

GT5 4:10 ratio

mred

iTrader: (5)

thanks dude. "REALLY"
i have been searching and had found the same stuff as well.
thanks again.....
i will be getting 4.10s when it comes to gear swap time.

mred

iTrader: (5)

well i have 3.42s.
a bit disapointed.
so i am going to change plugs,fuel filter,clean the air filterand check cats out.
the truck tune may be the only thing wrong with it really, but DAMN.

letsrun97z

iTrader: (7)

I have 3.42s aswell stock motor with 265/40/22's I turn about the same rpms on the freeway. But for somereason it's not a dog off the line I still want to do a gearswap and verter

mred

iTrader: (5)

its in the tune,tuner said its a economy tune and its gonna run like a dog.