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Gearing


RangerBoy94

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I was wondering what gears are in my truck??? It there a way to tell without taking the axle apart?? The reason why I'm asking is because when I get 33's on it its gonna be a little while before I regear it so I was wondering if I could run 33's with stock gearing.:dunno:
 


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door sticker, check axle code, check TRS tech library to see what code is your ratio.
or crawl under the truck and check the rear dif cover, it has a tag with another series of numbers, copy em and check the tech library to learn how to read that code.
 

RangerBoy94

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Alright I got limited slip 3:73's. Can I run 33's with that???
 

bobbywalter

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4.0?


yes.


dont tow:icon_thumby:
 

RangerBoy94

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Duh I wouldn't go with out a 4.0 What do you mean by don't tow?
 

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he means exactly that. dont tow shit with it if u get 33"s and keep that gearing
 

RangerBoy94

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Well I don't plan on towing. Towing is just gonna put to much load on the truck and the stock gearing will bog the engine down???
 

legoms013

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Yep, its hard on the whole drivetrain to do so. However, 33 and 3.73's are very do-able. I've been doing it for 6 months now. On the freeway you either have to do 75 with OD on, or 55-60 with OD off. Round town I leave OD off and drive normal. I actually get around 290 miles a tank (mostly freeway) like this.
 

RangerBoy94

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Well I have a manual So I'll do better than that.
 

Will

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It all depends on how you drive. If you can find a gear that will keep the rpms up around 2500, you could tow with it. Thing is, off of your stock tires, I'm guessing you'll have 15% less torque at the ground and that means more clutch wear, and a 15% less effective clutch to get it moving. It means that the motor will typically be required to deliver 15% more torque which means more heat and more wear on the engine. My '91 Ranger (most of it still lives in my '89 B2) came with 3.55s and 29" 235-75/15s. When I went to 31s, we had 4.10s installed and it stayed the same. 33s would mean 4.56s to keep it as nearly correct as possible.

I hate riding with people who think they know how to drive. I let someone drive my diesel Passat and he's slipping the clutch on every shift. I told him, try letting the clutch all the way up before you add power. So he tries it and says, "Wow, you really can do that with this diesel," and I said, "No, that's how the **** you are supposed to drive anything!"

The gear spacing is the same no matter what size tires you have. With bigger tires, your engine thinks it's just hauling a bigger load. You have to give it a little more time to accelerate because it's down 15% in torque, and let the clutch up before you give it power so you don't wear it out. Doing the clutch and gas simultaneously is amatuer and kills the clutch. A clutch will outlast the truck if you drive it right. Brakes last 50,000, or 30,000, and they are slipped as a rule. A clutch just gets you rolling from a stop and shouldn't see heat after that.

Don't hack away at it like you are churning butter and you could be fine with 3.73s and 33s for a long time. I had 4.10s and 35s before and it was alright. I was glad to get the 31s back on. I like lots of gear.
 

RangerBoy94

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Allright its only going to be temporary so It should be fine. Thanks alot guys!
 

bobbywalter

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theres a trans builder i know that did some load calculations for tires leverage/wt for comparatives.

with 42's and 410's in my truck its like towing 7k

with the 37's its like towing nearly 4 k

with 33's its under tire.

i cant find the sheet....it was based on actual weight of the tire/steel wheel combo verse stock gearing for a 4x4 suburban with a big block...91 iirc....it had a 4l80.






with a stick you can tow occasionally ...but with an auto i would suggest a big cooler in addition to the oem stuff.
 

legoms013

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...but with an auto i would suggest a big cooler in addition to the oem stuff.
NAW!, the motor will just reach operating temp that much quicker (assuming the cooler is an internal radiator type) :icon_twisted: jk

I will be going with 4.88's with my 33's pretty soon. Plenty of gear :thefinger:
 

06RangerXLT

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im running 32's on 3.55's without any problems, though i have no balls and my highway MPG is wicked!

im putting 4.56 in it this weekend.
 

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