SHREK1
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anyone do any regearing , running 38" , fuel milage hauling any load just horrible , had 3:73 going toput in 4:56 ????????? hoping it will help
changing gearing in f350
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sirkdev
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What is your truck configuration? engine, transmission?
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SHREK1
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08 f350 6.4l , auto , stock 3:73 , 4:56 fit right in , 4:88 need to change carrier , stock drivetrain but going to put a hypertech program in
sirkdev
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I doubt it, as part of the job 2 updates on the 6.4l production ford actually went down to 3.55 gears and guys were getting like 1mpg better than the 3.73's.
Are you stock now for engine?
If so quite likely the only way in your situation with those size tires and lift I am assuming is going to be in a DPF delete and tuner. I recommend Spartan on the 300 hp tune. I have been running mine for 2 years and there is no turning back.
Are you stock now for engine?
If so quite likely the only way in your situation with those size tires and lift I am assuming is going to be in a DPF delete and tuner. I recommend Spartan on the 300 hp tune. I have been running mine for 2 years and there is no turning back.
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SHREK1
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spec sheet says 3:73 , milage is liveable empty but any kind of a load and it goes for sh@t , buddy was running the spartan 275 tune , did not like the way it shifted , way to hard , road in one with the 300 tune < shifted worse , don't want to have greif at 180 km , looking for longevity , like to put 250 km before I replace ??????
sirkdev
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I have the 275 as well and know what you are talking about, check out Powered by Determination for the info on the 300 tune. It is the most recent, tune with big power and detuned on the bottom compared to the 275 so not so much smoke.
If you want dead reliable with way more power the 210 can not be beat I run that in the winter because the big tune is just too touchy.
Some trucks are really finicky with the relearn process, when a tune is installed. Go to spartan website and it will coach you through the process.
Also another thing that helped a lot for me as silly as it may sound was to add 1L of ATF to the transmission even though it said it was full, it made a huge difference in shifting.
If you want dead reliable with way more power the 210 can not be beat I run that in the winter because the big tune is just too touchy.
Some trucks are really finicky with the relearn process, when a tune is installed. Go to spartan website and it will coach you through the process.
Also another thing that helped a lot for me as silly as it may sound was to add 1L of ATF to the transmission even though it said it was full, it made a huge difference in shifting.
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SHREK1
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thats plan b , how many km you have , think i'm going to try gearing first , see where it goes from there , thanks for your 2 bits , will give ya some rep for it
Transporter
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Im running lift and big tires too. Would like to regear to 4.55 but at same time my other new truck stock gets like 9 miles to the gallon towing as well so only advantage I see would be around town mileage a bit better and easier on transmission and better power when not chipped.
DRD
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The cost to change gearing will take a long, long time to pay for itself based on the marginal increase in mileage.
sirkdev
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Agreed on the cost of gearing too expensive to make the change.
If you look at the newest trend it seems to be dropping cruising RPM the 6.4 is a couple hundred rpm lower than the 6.0 and the new scorpion is even lower yet. Riding in my buddies new scorpion you can see what they have tried to do by adding the extra transmission gear is to keep power in the "optimum" range and they have really delayed response when you mash the pedal.
I realize we automatically assume that we should get the rpm back in the "optimum zone" but with the power that you have I would say your current biggest issue is increased soot output when adding the load of a trailer which on a DPF truck is never a good thing creating more regenerations etc. If you want proof that gearing will hurt you talk to the guys with 450 and 550's they are very happy with 10-12 mpg empty.
This is why urea on the new trucks is a good thing helping to burn the soot without an active regeneration. However a 6.4L does not have that option.
On my 6.4 I used to regen every 4-500 km my buds scorpion is like 4-5000 km between active regens.
Sorry man but the only thing I can suggest is the DPF delete and a good custom tune. I also have a 4" exhaust and S@B intake as well. Currently have 80k on truck and has not been back to the dealer ever.
If you look at the newest trend it seems to be dropping cruising RPM the 6.4 is a couple hundred rpm lower than the 6.0 and the new scorpion is even lower yet. Riding in my buddies new scorpion you can see what they have tried to do by adding the extra transmission gear is to keep power in the "optimum" range and they have really delayed response when you mash the pedal.
I realize we automatically assume that we should get the rpm back in the "optimum zone" but with the power that you have I would say your current biggest issue is increased soot output when adding the load of a trailer which on a DPF truck is never a good thing creating more regenerations etc. If you want proof that gearing will hurt you talk to the guys with 450 and 550's they are very happy with 10-12 mpg empty.
This is why urea on the new trucks is a good thing helping to burn the soot without an active regeneration. However a 6.4L does not have that option.
On my 6.4 I used to regen every 4-500 km my buds scorpion is like 4-5000 km between active regens.
Sorry man but the only thing I can suggest is the DPF delete and a good custom tune. I also have a 4" exhaust and S@B intake as well. Currently have 80k on truck and has not been back to the dealer ever.
mclean
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i second the dpf delete and tune. Spartan or get custom tunes from Innovative (SCT). i went from 12-15mpg empty to over 20mpg and that was on the KEM345 tune
with the spartan 275 im getting a little less fuel mileage (and harder shifts)
with the spartan 275 im getting a little less fuel mileage (and harder shifts)
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SHREK1
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who does this SCT
sirkdev
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Innovative Diesel (Eric) in the states. There are canned tunes and custom tunes, I still think spartan has the most time in on the 6.4L development.
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SHREK1
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I heard that the engineer with spartan quit and moved to someone else and he was the key to their success???????. would of thought they would have it where it would shift smoother by now , but alot of people concur with you
sirkdev
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Quite possible that somebody moved on, happens every day. I think the firm shifts are to save the transmission. There is sooo much extra power available with out so kind of programming alterations the transmission would slip too much.
The SCT is considerably cheaper but same as anything you get what you pay for.
The SCT is considerably cheaper but same as anything you get what you pay for.
Oldtrick
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I've got an '08 with a 6.4l and running an Edge Evolution with a cold air intake, 70K km.
Intake gave me over 3MPG and with the Edge at 50HP, I do between 13-14l/100km - 22-24MPG at 125km/hr hwy.
Kit came with the DPF pipe and it's the only thing I haven't put in due to warranty.
For $500 combined, I would think this route would be a lot cheaper than dropping gears in, at least if you find yours doesn't come around, you can dump the Module and Intake.
Intake gave me over 3MPG and with the Edge at 50HP, I do between 13-14l/100km - 22-24MPG at 125km/hr hwy.
Kit came with the DPF pipe and it's the only thing I haven't put in due to warranty.
For $500 combined, I would think this route would be a lot cheaper than dropping gears in, at least if you find yours doesn't come around, you can dump the Module and Intake.
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SHREK1
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ran an edge on my last truck , 7.3l , wasn't happy with it , I believe that their is a proper set up for every unit as their electronics are different. how many km do you have on your edge? I'm would be happy half way of what you are getting. Talked to the ponoka ford they are promoting the hypertech program
Oldtrick
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Probably have 30k km on the Edge and Cold Air.
Ran a Hypertech in a reg gas truc I had and wasn't impressed. Changed shift points and that was about it.
Buddy of mine had a Bully Dog and I drove it down to Boise and back and watched he DPF cycle continuously. For a Reg driver it was useless when not loaded up. Pushing the fuel through and wasn't burning it properly.
With the cold air intake, my DPF comes on about every two weeks if that, and for less than 5min.
Anyone who is pushing a product should be able to give you advice on the competetor, if not, and they are pushing Hypertech or Edge, whatever it may be, because that is who their distributor is pushing, and likely making the biggest markup.
Why not take try a cold air intake and see what that does for you out of the box. Should give you an idea if a performance product will make a differance on your truck. If your shop tells you it won't make a differance on it's own, run. You've got their motives nailed right there.
Ran a Hypertech in a reg gas truc I had and wasn't impressed. Changed shift points and that was about it.
Buddy of mine had a Bully Dog and I drove it down to Boise and back and watched he DPF cycle continuously. For a Reg driver it was useless when not loaded up. Pushing the fuel through and wasn't burning it properly.
With the cold air intake, my DPF comes on about every two weeks if that, and for less than 5min.
Anyone who is pushing a product should be able to give you advice on the competetor, if not, and they are pushing Hypertech or Edge, whatever it may be, because that is who their distributor is pushing, and likely making the biggest markup.
Why not take try a cold air intake and see what that does for you out of the box. Should give you an idea if a performance product will make a differance on your truck. If your shop tells you it won't make a differance on it's own, run. You've got their motives nailed right there.
mclean
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He never really worked for Spartan I don't believe...I think he may have helped a bit with tuning but his name is mike and he does the KEM tunes now and does a very good job with them.
Your best bet is to stay away from bullydog, edge, hypertech etc and stick with the ford specific (Spartan, SCT with Innovative Tunes, or the H&S with KEM tunes) They cost more but they go way more in depth with the tuning and program your transmission to help with the power increases and shift shift points.
mclean
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I do believe eric is putting out the biggest numbers right now with basic tuning, intake and exhaust and the good thing about the SCT is that you can pick how hard you want your tranny to shift, you can change your tire sizes, egr on and off etc...way more options that way, but you dont get the monitoring that the Spartan has
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