Opinions for gearing

[Chiller]

Yes I have already read the countless articles on regearing, but every application is different.

8inch lift, toyos 37 just like in the sig my gears now are 3.73. My fuel mileage is horrible and I know I need to regear but not sure if I want 4.56 or 4.30 so your opinions are important to me so post away.

Some more details: I pull about a 7,000 pound trailer 3 days out of a normal 5 day work week sometimes more depending on work load.
What should I see as far as fuel mileage when I switch? Currently im getting 8 in town with trailer 10 without. I know I should worry about mileage with a truck but the fuel cost at the end of the month is killing me.

Thanks for any imput

[PGreenSVT]

I'd go for 4.30's myself. That should help you out some.

[Raul@Stealth Automotive]

go 4.30's its what i had and loved it

-Raul

[smokenstroke]

Well, pulling maybe the 4.56, but id say youd only need the 4.30's with the 38's. But if you plan on going any bigger???

[mudrunninpig]

4.30's will suit you well

[Chiller]

Originally Posted by smokenstroke

Well, pulling maybe the 4.56, but id say youd only need the 4.30's with the 38's. But if you plan on going any bigger???

I do plan on going bigger but no bigger then 39s....They should have a gear in the middle to solve this issue like 4.44s

[Chiller]

When you regeared did you see a performance gain? and did your mpgs change?

[Raul@Stealth Automotive]

Originally Posted by Chiller

When you regeared did you see a performance gain? and did your mpgs change?

yes... i got a lot of bottem end torque back.. i purposely put my TW chip to econo mode (normally set on street)

and when i picked it up it felt like i was on a tow setting.. deff got more of my HP back

-Raul

[snoboy]

Originally Posted by Chiller

I do plan on going bigger but no bigger then 39s....They should have a gear in the middle to solve this issue like 4.44s

I don't remember what was stock in 05 but it was apx. 32 so with your 37s you'll need 4.30s to get BACK to 3.73s and if you go to 39s than go to 4.56s to maintain apx a 3.73 final drive ratio.
I'm running 4.30s with 33.5s which puts me at an actual 4.11 final drive.

Here's a quicky calculator

http://www.4lo.com/calc/geartire.htm

[Chiller]

Thanks for all the input!