First heavy haul
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Elder User
Joined: Sep 2004
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First heavy haul
Finally made my maiden heavy haul voyage today. 3 hour trip with a 50 foot wedge trailer with a guestimated 18k load (trailer and vehicles).
My truck is a 96ish f350 crew cab 7.3 auto 2wd. I believe it has 4.10 gears. I have the 6637 filter, trans cooler, 3" dp, straight exhaust, ts chip (pullled in 75 hp setting), and a 51 gallon aux tank. Also have 24" wheels
The truck did fine. Most was interstate, i55 north in mississippi. Lots of hills. Truck did anywhere from 55-80 with damn near full throttle most of the way. Trans temp ran 200-210, boost stayed steady around 10 with a max of 21, and exhaust stayed 1000-1200 and maxed one time just shy of 1300.
Fuel mileage was around 4mpg (roughly calculated) 👎
What can i do to help this thing do a little better both power and mpg? Im considering gears, injectors, turbo and intercooler but am tight on money so i wanna make sure i do it in the correct order of whatll be most beneficial for hauling. Bring on the input.
Here is some truck **** (although it may not be some of yalls cup of tea)
My truck is a 96ish f350 crew cab 7.3 auto 2wd. I believe it has 4.10 gears. I have the 6637 filter, trans cooler, 3" dp, straight exhaust, ts chip (pullled in 75 hp setting), and a 51 gallon aux tank. Also have 24" wheels
The truck did fine. Most was interstate, i55 north in mississippi. Lots of hills. Truck did anywhere from 55-80 with damn near full throttle most of the way. Trans temp ran 200-210, boost stayed steady around 10 with a max of 21, and exhaust stayed 1000-1200 and maxed one time just shy of 1300.
Fuel mileage was around 4mpg (roughly calculated) 👎
What can i do to help this thing do a little better both power and mpg? Im considering gears, injectors, turbo and intercooler but am tight on money so i wanna make sure i do it in the correct order of whatll be most beneficial for hauling. Bring on the input.
Here is some truck **** (although it may not be some of yalls cup of tea)
Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
I like the wheels. I think they look good, but for what you are doing, I would go back to stock wheels and 235/85-16" 10 ply tires. I'm sure turning those huge wheels and tires is killing your fuel mileage. With stock wheels and tires, and 4.10 gears it should pull good.
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
Going to 4.56 gears would put you at about 2456 RPM in overdrive with 31" tall tires at 70mph. Too many RPMs for some and it wouldn't help mileage at all, but it would pull harder.
Aside from that, putting more power in it is going to help you a lot as long as the turbo choice and tuning is decent
Aside from that, putting more power in it is going to help you a lot as long as the turbo choice and tuning is decent
Hotshot
Joined: Dec 2005
Posts: 10,250
Likes: 7,676
From: Chino Valley, Arizona
If I don't have crazy wind I get about 6 to 8 towing my hay every year, only mods are 6637 intake 4" strait pipe exhaust and 60 hp edge program. truck has 4.10 gears and 295 tires. truck, trailer and hay is 32,000 lbs (see pic in signature) that is towing from Grand junction Colorado to central Arizona. all mountains I think it is uphill both ways.
if all goes well this year I will have stage 1 injectors, T500 hpop and a 2000 CAC.
if all goes well this year I will have stage 1 injectors, T500 hpop and a 2000 CAC.
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Elder User
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If I don't have crazy wind I get about 6 to 8 towing my hay every year, only mods are 6637 intake 4" strait pipe exhaust and 60 hp edge program. truck has 4.10 gears and 295 tires. truck, trailer and hay is 32,000 lbs (see pic in signature) that is towing from Grand junction Colorado to central Arizona. all mountains I think it is uphill both ways. if all goes well this year I will have stage 1 injectors, T500 hpop and a 2000 CAC.
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Junior User
Joined: Mar 2013
Posts: 60
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I have 97 F350 totally stock except for DPtuner. Auto, 2wd, 4:10 gears. I currently pull a 11,900 lb 5th wheel RV. On interstate I get around 10 to11 mpg while hooked to my rv. Truck pulls it with absolutely no problem I am in process of buying a 14,000 lb 5th wheel. I am adding a Tru-Cool Max trans cooler, trans temp gauge,and a pyrometer.
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Senior User
Joined: Apr 2006
Posts: 311
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From: Santa Barbara and Ottawa
I too have the 4:10 and pretty much have the same numbers at smithm31, towing about 12k lbs and pretty stable at 10mpg not going over 70ish in the summer. Stock except the 6337. One of these days I'll replace the damn downpipe.
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