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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

3.73 vs 4.10

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Old Sep 9, 2004 | 06:39 AM
  #16  
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Originally Posted by darylhunter
Thanks Ironman,

I was just getting ready to repost the formula again.

Tim,

What do you think about a sticky for a 6.0 FAQ for questions like this that come up often. We could put up some of the speed/RPM and HP/torque formulas, pyro probe and other gauge related installation instructions, etc.
I want to do it, I have been very busy...SBV ahs a bunch of instructions I want to put in it also. I hope to do it in the late Oct early Nov time frame.
We will need to lose a few of the current stickies
 
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Old Sep 24, 2011 | 08:41 PM
  #17  
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Ok I purchased a 06 F250 SD last week and have been lurking on this site for a few weeks now. forgive me if this is premature, but I haven't found another thread after searching for hours to completely touch on my situation. My F250 has BFG A/T 315/65R/18's with 3.73 gears. Already this truck has the "steering wheel play" issue which I am almost 100% certain I have a hub bearing as well as the steering box that are going to need to be purchased in the near future. But back on topic, I didn't drive this truck before the BFG's were put on so I'm not certain this is the problem. It seems very odd to me that this truck takes a lot to get it up to cruising speed (60 MPH). This truck is extremely sluggish! Was wondering if I should swap for 4.10 gears. I would really like to have more acceleration and I am willing to give up 250 more RPM at 60MPH as I do most of my driving in this truck at 45-60 MPH so top end isn't really a necessity. I am really just in awe at how slow this thing is 0-50 it's really pissing me off. Is this normal for me to really have to get on it (and waste a ton of gas) just so i don't get blown off the line by the prius next to me? haha thanks for your thoughts and sorry for hijacking the thread......
 
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Old Sep 24, 2011 | 11:44 PM
  #18  
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You have another problem. My stock 04 cc srw can haul a$$. 0-50 in about 6 or so seconds. I raced a newer Trans am the other day getting on the freeway. And we went neck and neck. And I have about 4000 lbs on him. if it was tuned i'm sure I could have made him cry.
 
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Old Sep 25, 2011 | 12:25 AM
  #19  
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Originally Posted by Unrealo4
You have another problem. My stock 04 cc srw can haul a$$. 0-50 in about 6 or so seconds. I raced a newer Trans am the other day getting on the freeway. And we went neck and neck. And I have about 4000 lbs on him. if it was tuned i'm sure I could have made him cry.
any idea why its so weak then?
 
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Old Sep 25, 2011 | 07:54 AM
  #20  
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Originally Posted by VaBeachF250
any idea why its so weak then?
Leaking CAC boots, low fuel pressure, clogged fuel filters, clogged air filter, clogged cat and turbo vanes not "sweeping" like they should just to name a few possible issues. Any CEL (check engine lights) or codes showing?
 
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Old Sep 25, 2011 | 09:41 AM
  #21  
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In the 6.0 forum there's a tech folder for all things 6.0. There's a low power checklist in there that you can go through. You will be surprised at the real power of your truck.
 
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Old Sep 25, 2011 | 10:59 AM
  #22  
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Originally Posted by zhilton
Leaking CAC boots, low fuel pressure, clogged fuel filters, clogged air filter, clogged cat and turbo vanes not "sweeping" like they should just to name a few possible issues. Any CEL (check engine lights) or codes showing?
I know for a fact that I have an exhaust manifold leak and I am replacing it all with headers, cat, muffler, and new pipes. I didn't think the exhaust could cause this much power loss. I don't have a CEL on but Maybe they removed the light? haha. I am going to check out that 6.0 tech folder.
 
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Old Sep 25, 2011 | 02:25 PM
  #23  
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Originally Posted by VaBeachF250
I know for a fact that I have an exhaust manifold leak and I am replacing it all with headers, cat, muffler, and new pipes. I didn't think the exhaust could cause this much power loss. I don't have a CEL on but Maybe they removed the light? haha. I am going to check out that 6.0 tech folder.
If you've got leaks in the exhaust ahead of the turbo, your not getting the full force of the exhaust on the turbine wheel. The exhaust is going to take the path of least resistance. I seriously doubt someone tore into the dash to take the CEL icon bulb out...but it could be burned out; it's only a nickel bulb. I second the idea of going through "low power" check list in the tech folder. From KTP, these trucks will run like a rapped ape.
 
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Old Sep 25, 2011 | 02:50 PM
  #24  
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Originally Posted by zhilton
If you've got leaks in the exhaust ahead of the turbo, your not getting the full force of the exhaust on the turbine wheel. The exhaust is going to take the path of least resistance. I seriously doubt someone tore into the dash to take the CEL icon bulb out...but it could be burned out; it's only a nickel bulb. I second the idea of going through "low power" check list in the tech folder. From KTP, these trucks will run like a rapped ape.
I think first things first, I am going to redo the exhaust but still don't know which system im going to go with. Any recommendations? I have heard long flow headers are the way to go but I have never shopped for headers. I was really joking about the CEL. I know the previous owner and know thats not the case.
 
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Old Sep 25, 2011 | 03:02 PM
  #25  
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Originally Posted by VaBeachF250
I think first things first, I am going to redo the exhaust but still don't know which system im going to go with. Any recommendations? I have heard long flow headers are the way to go but I have never shopped for headers. I was really joking about the CEL. I know the previous owner and know thats not the case.
Not sure what your trying to accomplish with the truck, but the factory manifolds will support allot of power...just like the intake/air filter. Now exhaust...that's a whole 'nother story; and like an oil thread it's an open subject as far as which system is better than the other (brand-wise & emissions).
 
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Old Sep 25, 2011 | 03:06 PM
  #26  
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Originally Posted by zhilton
Not sure what your trying to accomplish with the truck, but the factory manifolds will support allot of power...just like the intake/air filter. Now exhaust...that's a whole 'nother story; and like an oil thread it's an open subject as far as which system is better than the other (brand-wise & emissions).
I already know for sure my stock manifolds are going to have to be replaced, so I just want to replace whats broken currently and since im going to replace it might as well upgrade it so no regrets later. make sense?
 
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Old Sep 25, 2011 | 03:24 PM
  #27  
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Originally Posted by VaBeachF250
I already know for sure my stock manifolds are going to have to be replaced, so I just want to replace whats broken currently and since im going to replace it might as well upgrade it so no regrets later. make sense?
What your saying makes sense, but to the best of my limited knowledge there's no reason to go a/m on the exhaust. I know a couple of guys running 500Hp motors and as far as I know...they're still running OEM exhaust manifolds. I went looking/searching this forum to see if somebody had gone a/m on their exhaust and I couldn't find anything after a couple of minutes looking (maybe there's a secret squirrel code word). Going back to your orginal question, I think once you fix your exhaust leak in the manifolds and make sure your turbo vanes are sweeping like they should (may need to clean them) your truck will run like you want it to.
 
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Old Jun 10, 2016 | 01:14 AM
  #28  
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I've been doing a lot of research on different sites lately on 3.73 gears VS. the 4.10 gears. I own an 01 F350 SRW 4WD gas truck and I do tow frequently enough that I want to cough up the cash at some point in the near future for the 4.10 gears to replace my 3.73 gears. Mind you I don't tow anything insanely heavy but I tow a flat deck equipment trailer which usually carries a car, truck, several quads or farm machinery from time to time and I'd like the extra buff in the gearing for a smoother take off and easier hill climbing torque while towing. According to a print out of my trucks factory specs from my local Ford Dealership my truck apparently has a Dana 50 front axle and a Dana 80 rear axle, and I knew before hand that it does have 3.73 gears. My truck is a 2001 F350 XL with the manual engaging 4WD with an auto transmission. The only real thing I'd like to know is what all do I need to buy to replace my 3.73s to new 4.10s? I know I'd need to buy the new Ring & Pinions for the front & rear axles, and I'd also be replacing the bearings in both axles while it's being changed out. I was going to have my mechanic do all of this when I get my differentials over hauled, and figured that that would be the perfect opportunity to get the 4.10s thrown in while my truck is under the knife so to speak. Any help or advice as to what all I need to know and what parts I require for this switch would be very much appreciated. Thank you, and I appreciate if you read all of this haha, I tend to write a Lot more than I originally anticipate.
 
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Old Jun 10, 2016 | 02:36 AM
  #29  
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Originally Posted by sirkingdra
I've been doing a lot of research on different sites lately on 3.73 gears VS. the 4.10 gears. I own an 01 F350 SRW 4WD gas truck and I do tow frequently enough that I want to cough up the cash at some point in the near future for the 4.10 gears to replace my 3.73 gears. Mind you I don't tow anything insanely heavy but I tow a flat deck equipment trailer which usually carries a car, truck, several quads or farm machinery from time to time and I'd like the extra buff in the gearing for a smoother take off and easier hill climbing torque while towing. According to a print out of my trucks factory specs from my local Ford Dealership my truck apparently has a Dana 50 front axle and a Dana 80 rear axle, and I knew before hand that it does have 3.73 gears. My truck is a 2001 F350 XL with the manual engaging 4WD with an auto transmission. The only real thing I'd like to know is what all do I need to buy to replace my 3.73s to new 4.10s? I know I'd need to buy the new Ring & Pinions for the front & rear axles, and I'd also be replacing the bearings in both axles while it's being changed out. I was going to have my mechanic do all of this when I get my differentials over hauled, and figured that that would be the perfect opportunity to get the 4.10s thrown in while my truck is under the knife so to speak. Any help or advice as to what all I need to know and what parts I require for this switch would be very much appreciated. Thank you, and I appreciate if you read all of this haha, I tend to write a Lot more than I originally anticipate.
Welcome to FTE!
First of all, this is a good question, although not necessarily key to your truck. I would suggest starting your own thread instead of revisiting a 5 year old one in the 6.0 diesel section. This will help get you better exposure to your question and more pertinent experience to your truck's setup. If you are looking for generic answers that are not specific to your gas engine equipped truck, try posting in the Super Duty Forum section. Here's a link for you. Super Duty & Heavy Duty - Ford Truck Enthusiasts Forums Good luck!
 
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