6.0L Power Stroke Engine and DrivetrainDiscussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.
I have 35's and put in 4.56's brought my rpm's up by 300 while crusing at 75mph. I live near the mountains and wanted better towing ability. It definitely brings the motor to its proper torque range. I strongly recommend it.
MTBLUEFORD What are you running for RPMS at 75 with the 4.56's out of curiosity? My EGTs just keep climbing if I'm pulling anything or going up inclines unless I kick it down and cruise in 4th, then I'm staying at around 900 degrees. I'm hoping that the new gears will help with all that and allow we to cruise in 5th comfortably.
Dan K - I don't have the mechanical ability to swap them out myself. If I could I would in a second vs. pay some tech down the street 800 bucks to do it. Anyone in the Quantico VA area have any recommendations for installers? What type of gears should I look into???
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07 F250 Lariat, 6.0L, 8" Fabtech lift, 38" Toyo M/T's, fender flares, Edge Platium, Magnaflow exhaust, K&N Aircharger, Pioneer Nav/DVD, JL Amp w/ stealth box console, rhino lined, Recon light bar, Recon aux lights, Aries SS bull bar, Viper SST alarm/remote start, Amp Research step bars, K40 Radar
KRAZYKABOOM i am running 2200 rpm. If you look at the torque curve for the 6.0 you will see thats where its power is. Also with rpm's your egt's will stay in check. The torqshift is a good tranny but its 5th gear i believe is a 1 to 1 ratio which it totally drops the truck out of its power curve.Although a chip will help there is no substitute for the rpm's you need,believe me i pull in the mountains all the time.I was having the same problem as your talking about.I PAID 1700.00 with gears here in montana i used yukon gears been in for 2 years now no problems.
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2004 F350, 6.0L TorqShift, SRW, CC, LB, Lariat, 4X4, Built Feb 2004
8" Lift, Fox Shox, 37x13.5x17 Toyo Open Country MT on Weld Evo Velociti XT, 4.88 Gears, MagnaFlow Exhaust, AMP Research PowerStep, Auto Meter Cobalt Gauges (EGT Boost Trans), ScanGaugeII, Firestone Air Bags/Compressor/Tank, BulletProofDiesel EGR Cooler, Valvoline lubricants, Final Charge Global ELC, DieselSite Coolant Filter
2200 RPM at 75!! That's sound a heck of a lot better than 2000 at 60-65. It sounds like a set of 4.56 is the way to go. I have been quoted similar prices for the install in the Virginia area as well. What is everyone view on 4.88 gears. Is that a bit tall for my application? I don't want to slap on the 4.56 and then be dissappointed when I buy a boat (don't tell my wife) next year and it doesn't pull like it should. I suppose if you are running the 4.56 in Montana terrain, I should be satisfied.....thoughts?
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07 F250 Lariat, 6.0L, 8" Fabtech lift, 38" Toyo M/T's, fender flares, Edge Platium, Magnaflow exhaust, K&N Aircharger, Pioneer Nav/DVD, JL Amp w/ stealth box console, rhino lined, Recon light bar, Recon aux lights, Aries SS bull bar, Viper SST alarm/remote start, Amp Research step bars, K40 Radar
KRAZYKABOOM i am running 2200 rpm. If you look at the torque curve for the 6.0 you will see thats where its power is. Also with rpm's your egt's will stay in check. The torqshift is a good tranny but its 5th gear i believe is a 1 to 1 ratio which it totally drops the truck out of its power curve.Although a chip will help there is no substitute for the rpm's you need,believe me i pull in the mountains all the time.I was having the same problem as your talking about.I PAID 1700.00 with gears here in montana i used yukon gears been in for 2 years now no problems.
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Originally Posted by JW350
5th gear in the TorqShift is 0.71 to 1.
How do you like your 4.88 gearing? Are you towing alot? What are you running on the interstate for RPMs?
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07 F250 Lariat, 6.0L, 8" Fabtech lift, 38" Toyo M/T's, fender flares, Edge Platium, Magnaflow exhaust, K&N Aircharger, Pioneer Nav/DVD, JL Amp w/ stealth box console, rhino lined, Recon light bar, Recon aux lights, Aries SS bull bar, Viper SST alarm/remote start, Amp Research step bars, K40 Radar
How do you like your 4.88 gearing? Are you towing alot? What are you running on the interstate for RPMs?
I like 4.88 gears with 37" tires for how I use my truck. My toy hauler is approx 13,000 lbs and my destinations take me up steep grades and over mountain passes. Truck feels dialed...
I have a local commute (no freeway). When I am unloaded on the freeway, I hold 80 MPH at 2,600 RPM the entire trip. The 6.0 likes RPM.
You stated earlier that you do not tow much, if ever. But, you may get a boat? I recommend 4.56 gears with your 38" tire setup.
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2004 F350, 6.0L TorqShift, SRW, CC, LB, Lariat, 4X4, Built Feb 2004
8" Lift, Fox Shox, 37x13.5x17 Toyo Open Country MT on Weld Evo Velociti XT, 4.88 Gears, MagnaFlow Exhaust, AMP Research PowerStep, Auto Meter Cobalt Gauges (EGT Boost Trans), ScanGaugeII, Firestone Air Bags/Compressor/Tank, BulletProofDiesel EGR Cooler, Valvoline lubricants, Final Charge Global ELC, DieselSite Coolant Filter
I like 4.88 gears with 37" tires for how I use my truck. My toy hauler is approx 13,000 lbs and my destinations take me up steep grades and over mountain passes. Truck feels dialed...
I have a local commute (no freeway). When I am unloaded on the freeway, I hold 80 MPH at 2,600 RPM the entire trip. The 6.0 likes RPM.
You stated earlier that you do not tow much, if ever. But, you may get a boat? I recommend 4.56 gears with your 38" tire setup.
Thus far 4.56 has been the recommended gear set for my setup. I am by no means towing the weight you are, so IMO the 4.88 would be too tall and not allow me to cruise comfortably on the interstate. Thanks for the all your help...now it's on to pricing.
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07 F250 Lariat, 6.0L, 8" Fabtech lift, 38" Toyo M/T's, fender flares, Edge Platium, Magnaflow exhaust, K&N Aircharger, Pioneer Nav/DVD, JL Amp w/ stealth box console, rhino lined, Recon light bar, Recon aux lights, Aries SS bull bar, Viper SST alarm/remote start, Amp Research step bars, K40 Radar
i have a question. i have a 2004 F 250 4wd PSD. i am looking to add some gear for towing reasons. i have stock tires and no lift or anything. what would be a good gear for me and do you have to change the front and rear or just the rear? the truck is used for towing 90% of the time.
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