In need of gears, need suggestions
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New User
Joined: Mar 2008
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From: Jacksonville Florida
In need of gears, need suggestions
i am new here andi have a 2002 f-350 ( non dually) 4x4. i have 37 inch parnelli jones tires and i hate how it is a little sluggish in 2nd gear. i have the stock 3.73 gears in it now any suggestions on what i should get and where to get them from?
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
What type of work do you do with your truck? What weights to you tow and what type of trailers.
If you do just occasional towing (under 10k), then you might be best suited with 4.30 gearing.
If you tow often, then the 4.88 gearing may meet your needs. Those 37" tires throw your ratio way too high with 3.73's, imo.
Give us some idea how you're going to be working your truck.
If you do just occasional towing (under 10k), then you might be best suited with 4.30 gearing.
If you tow often, then the 4.88 gearing may meet your needs. Those 37" tires throw your ratio way too high with 3.73's, imo.
Give us some idea how you're going to be working your truck.
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
4:88s minimum IMO. I'd ditch the stock LS rear diff too if you do any offroading or driving in snow, add a better posi.
37's and 3:73s will make the truck feel like a slug. Even 4.30s and 37s will feel sluggish.
http://www.ringpinion.com/
37's and 3:73s will make the truck feel like a slug. Even 4.30s and 37s will feel sluggish.
http://www.ringpinion.com/
Thread Starter
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New User
Joined: Mar 2008
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From: Jacksonville Florida
i use to do a lot of towing before i put the big tires on but i have an 04 f350 deisel i use for towing now. i mainly just use this truck to drive around and do a little off roading in. but when i do tow i have a 873 bobcat and a few tons of rock on it.
Hotshot
Joined: Mar 2007
Posts: 10,101
Likes: 40
From: Pa
4:88 gears with 37" tires is equivlent to 4.22 gears with 32" tires.
I would say 4:88s would be almost a perfect match.
I would say 4:88s would be almost a perfect match.
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From: SLC, UT
Originally Posted by dkf
4:88 gears with 37" tires is equivlent to 4.22 gears with 32" tires.
I would say 4:88s would be almost a perfect match.
I would say 4:88s would be almost a perfect match.
I'm running 4.56s with stock tires and love the performance. I recommend 4.88s-5.13s as a minimum.
Since you wheel your SuperDuty...might go with ARB front and rear...or at a minimum go with a TrueTrac LS in the rear.
More Turbo
Joined: Mar 2005
Posts: 522
Likes: 2
Originally Posted by dkf
4:88s minimum IMO. I'd ditch the stock LS rear diff too if you do any offroading or driving in snow, add a better posi.
37's and 3:73s will make the truck feel like a slug. Even 4.30s and 37s will feel sluggish.
http://www.ringpinion.com/
37's and 3:73s will make the truck feel like a slug. Even 4.30s and 37s will feel sluggish.
http://www.ringpinion.com/
Fleet Mechanic
Joined: Aug 2003
Posts: 1,546
Likes: 46
From: Kemmerer, Wyoming
4.88s bare minimum... if you want a little more "fun" go 5.13... won't cost you a whole lot in the fuel mileage department doing so.
BTW, I would be willing to bet you a beer that your fuel mileage will improve by proper regearing anyhow!
BTW, I would be willing to bet you a beer that your fuel mileage will improve by proper regearing anyhow!
Thread Starter
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New User
Joined: Mar 2008
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From: Jacksonville Florida
yea well after doing some research and listening to you guys i am probably going to 5.13's. seems like its a better match for what i will be doing.
it most definatley will.... but to bad i am not old enough to buy you one, lol
only 2 more years...
Originally Posted by swann79
BTW, I would be willing to bet you a beer that your fuel mileage will improve by proper regearing anyhow!
only 2 more years...
Fleet Mechanic
Joined: Aug 2003
Posts: 1,546
Likes: 46
From: Kemmerer, Wyoming
Originally Posted by v10SuperDuty Man
yea well after doing some research and listening to you guys i am probably going to 5.13's. seems like its a better match for what i will be doing.
it most definatley will.... but to bad i am not old enough to buy you one, lol
only 2 more years...
it most definatley will.... but to bad i am not old enough to buy you one, lol
only 2 more years...
