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  #1  
Old 04-30-2010, 07:05 AM
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Opinions for gearing

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
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Old 04-30-2010, 07:11 AM
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I'd go for 4.30's myself. That should help you out some.
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Old 04-30-2010, 07:12 AM
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go 4.30's its what i had and loved it

-Raul
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Old 04-30-2010, 07:14 AM
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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???
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Old 04-30-2010, 07:17 AM
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4.30's will suit you well
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Old 04-30-2010, 07:26 AM
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Quote:
Originally Posted by smokenstroke View Post
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
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Old 04-30-2010, 07:27 AM
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When you regeared did you see a performance gain? and did your mpgs change?
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Old 04-30-2010, 07:36 AM
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Quote:
Originally Posted by Chiller View Post
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
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  #9  
Old 05-01-2010, 09:05 PM
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Quote:
Originally Posted by Chiller View Post
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

Last edited by snoboy; 05-01-2010 at 09:09 PM.
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  #10  
Old 05-02-2010, 12:57 PM
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Thanks for all the input!
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