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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 01-09-2012, 09:23 PM
BCWhite BCWhite is offline
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Default Gears: What do I have, upgrade?

I have an 03 SLT Standard Cab (4WD). How can I figure out what gears I have and would it be worth the money to upgrade? Looking for more power. Thanks.
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Old 01-10-2012, 03:40 PM
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There should be a sticker on the axle itself that tells you your gearing. Look under the back toward the driverside I think is where they put it on that year model.
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Old 01-12-2012, 10:08 AM
rinkerman rinkerman is offline
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If you have the owners manual there should be a section that tells you where to find the build codes so you can check. On my 2002 the info was on a sticker in the glove box.
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Old 01-12-2012, 04:48 PM
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snrusnak snrusnak is offline
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You should also be able to email chrysler and request your build sheet that will have every option about your truck listed on it (including gear ratio).
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Old 01-12-2012, 11:24 PM
BCWhite BCWhite is offline
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My build sheet says

DJMS 205MM HD Front Axle
DMDS 3.55 Rear Axle Ratio
DRBS Corporate 9.25 LD Rear Axle

Don't know why I didn't look there before. Now can someone decipher for me please?
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Old 01-12-2012, 11:29 PM
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snrusnak snrusnak is offline
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I can't comment on the front axle, but the rest means you have 3.55 gearing (pretty typical) and it is the 9.25" axle (standard on all ram 1500 models; this is just basically a name, you can just ignore the 9.25"....it is basically just an identifier). If you don't have anything (probably just under those items) that says "anti spin differential" or something similar to this then you have an "open" differential, which means both wheels won't provide torque to the ground, only one wheel will. Common "lay mans term" for when both wheels provide torque to the ground is posi traction...
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Old 01-12-2012, 11:48 PM
BCWhite BCWhite is offline
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Ok, I am thinking of upping to 4.56 gears. I have been reading alot on that lately.
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Old 01-12-2012, 11:58 PM
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Yeah many 4.7L guys do that. I think 4.10's is tall enough, I'm afraid of losing hwy mpg though. Also, on the drag strip (depending on gear ratio and tire size) higher numerical gearing is not always better...
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Old 01-13-2012, 12:47 AM
BCWhite BCWhite is offline
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I dont know alot about gearing. I dont want to drag, but more power would be better. Why does it seem like every 4.7 guy goes to 4.56 gears?
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Old 01-13-2012, 12:51 AM
BCWhite BCWhite is offline
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From what I see, 4.56s are for pulling power and drag racing. My education continues because I am liking what I am reading about acceleration with 4.10s.
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