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Old 06-23-2014, 03:53 PM
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Gear question??

Truck in sig. 3.73 stock gears. Been Rollin around on the new 315's for the last month. Noticed that is pretty sluggish getting up to speed on the highway. Also noticed it downshifts more than it used to. I had the speedo recalibrated for the 315's. Speed seems right on (or close to it). I can do 75mph at 2k rpm that's kinda cool. If I keep it at 2k rpm it will blow right over most of the hills without downshifting. It would be nice to not have to keep my foot in it just to keep from downshifting. My question, would going up to 4.10 gears help with the downshifting and also give a little more ummmph when I put my foot in it?? Thanks for any help or suggestions.

Last edited by Ford Cowboy; 06-23-2014 at 04:18 PM.
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Old 06-23-2014, 07:00 PM
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Had 3.73s in my 250 with 315s and ran a dp tuner. I never saw much perceived power loss and it would pull hell off the hinges. Could it be that you are expecting to much?
I have a dually now with 4.10s and i like the 4.10 ratio but 65mph is about as hard as I'll run it.
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Old 06-23-2014, 07:24 PM
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3.73's seem to be what almost everyone wants. Good combo for mileage and towing.
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Old 06-23-2014, 07:48 PM
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Quote:
Originally Posted by tech701 View Post
Could it be that you are expecting to much?
Yeah that very we'll could be it. I think a tuner might help it some. Kinda wake it up a little. The downshifting really isn't bad, it's just something different.
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Old 06-24-2014, 04:30 AM
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I have 3.73's in my srw 250 with 35's and 4.10's in my stock tired dually... drive the 250 daily, dp tuner on 80 hp econo and its fine. Switch to stock and its a dog. 4.10's would be nice but it works as-is. Dually would be fine with higher gears on the stock tires.

OP: tune it... cheaper than gears.

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Old 06-24-2014, 05:59 AM
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Quote:
Originally Posted by Ford Cowboy View Post
Truck in sig. 3.73 stock gears. Been Rollin around on the new 315's for the last month. Noticed that is pretty sluggish getting up to speed on the highway. Also noticed it downshifts more than it used to. I had the speedo recalibrated for the 315's. Speed seems right on (or close to it). I can do 75mph at 2k rpm that's kinda cool. If I keep it at 2k rpm it will blow right over most of the hills without downshifting. It would be nice to not have to keep my foot in it just to keep from downshifting. My question, would going up to 4.10 gears help with the downshifting and also give a little more ummmph when I put my foot in it?? Thanks for any help or suggestions.
You don't have a sig

Custom tuning would help and is much cheaper then a gear swap
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Old 06-24-2014, 06:14 AM
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yeah im with these guys! throw a nice tuner in there, im running 38x15.5r20 on my stock 3.73 gears, and with my chip i can still haul *** and get 20mpg on a 8" lift

i like the stock gears because i do lots of road trips, and i can do 80-90mph for long periods of time without the RPMs being too high unlike a stock setup at that speed would have the turbo boosting the whole time

but my vote goes to a good tuner, S&B Intake and 4" straight pipe, that should really help
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Old 06-25-2014, 01:18 PM
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"im running 38x15.5r20 on my stock 3.73 gears, and with my chip i can still haul *** and get 20mpg on a 8" lift"

20mpg you say? Please say what chip you have so that i might worship it!!!!

Sorry son.... but I call toro do do on that one.
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Old 06-25-2014, 01:48 PM
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i get 20mpg at 65mph, i normally do 75-80mph and get 17 to 18mpg at that, and at 90-100 i get 12 which really sucks but i be hauling ***,

but if i do baby her the tan last forever!!!!!

i have the Banks Big Hoss Chip but i just bought the TS 6 pos. Chip so well see how well this one does
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Old 06-25-2014, 04:04 PM
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Quote:
Originally Posted by 351fifty View Post
You don't have a sig
That's weird, I had one the other day . Been lookin at a 6 position switch with beans tunes. What do y'all think about beans? I've always been concerned about adding a tuner. Worried I'm gonna hurt, strain, blow the engine. Wear $hit out faster. Thoughts?? My truck currently has 93,436 miles. Oil and filter changed every 2k since birth along with fuel filter every 4k. I try to maintain the engine as best I can to keep it healthy.
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