06Sierra2

i just put my 4.10s in with a cc and 31.5 in tires. while it is a big improvement coming from 3.23's i prolly could have gone 4.30s. so for u with 33's i think 4.56 would be nice. you can still add the heads later and have even more power too. what about intake mani to go with the heads?

cdub81

iTrader: (2)

11" they are 285's i had 325's on the 18's at first bit it was way to much so i put 285's and def better

havent really put much thought into the intake yet was thinking maybe just putting the tbss intake but with the aftermarket heads i dunno if the tbss intake is even worth the swap

fredkj3

iTrader: (1)

do it big.... i loved my 4.30s... sucked on highway though... at 80 it was almost to 3000

lady3bglover

iTrader: (3)

I see no mention of a TruTrac install, or are you wanting to stay the one wheel squealer?

cdub81

iTrader: (2)

well i didnt do my research first and had a yukon posi put in had that in for a couple months then bought a tru trac on ebay and put it in so yes i already have a tru-trac installed

thundert56

hi I am having the same debaite hear as well my 2500 avy is a heavy truck but with the money I put into the 8.1 it seems slow I talked to yank converters and they told me with the towing that I do changing my stall was out of the question they recomended that I just put in lower gears. factory I have 3.73. I am also running 285-70R17 BFG
KM2s I am trying to decide weither to do 4.10 or 4.56. right now I am leaning toward the 4.56s. my truck has a lot of low end grunt but I still like to have a little fun hear and there. I raced a couple in a bmw 5 series last week and got in front of him and he didn't pass me back up till I was almost through 2nd gear. I SAY GO WITH 4.56 gears

TXsilverado

iTrader: (19)

i agree...or lose the 33's and gain even more

cdub81

iTrader: (2)

yea txsilverado ive thought about lowering it and putting nnbs 20's but ill try the gears first and see how that feels... I know the 33's are eating alot up

whitedakota

iTrader: (1)

did you ever do the 4.56's? im in the same boat i have 3.42's with 285's.. i was gonna do 4.10's, but the more i read i think i might want 4.56's.

whitedakota

iTrader: (1)

ttt...