Mileage thread
Lead Driver
Joined: Nov 2003
Posts: 6,900
Likes: 3
From: Campbell River, B.C.
1986 f250 ExCab 2wd, 3.08 gears E4OD transmission in overdrive about half the time, while towing 20F flatbed trailer, ocasional AC use, cruising at 65- 70mph (1600 rpm),
16 MPG (lots of hills ranging from 2%-6%).
I think I can squeeze a little more out of 'er.
16 MPG (lots of hills ranging from 2%-6%).
I think I can squeeze a little more out of 'er.
Senior User
Joined: Apr 2006
Posts: 122
Likes: 0
1. Right around 16 MPG's, hauling a gooseneck with tractor 10-11mpg's
2.Aurora 2000 turbo, wastegated
3. Mod intake, and exhaust
4.f-250 w/dana 80 front(yes eighty), and sterling 10.25" rear with 4.10 ZF5 speed trans 4x4.
2.Aurora 2000 turbo, wastegated
3. Mod intake, and exhaust
4.f-250 w/dana 80 front(yes eighty), and sterling 10.25" rear with 4.10 ZF5 speed trans 4x4.
Senior User
Joined: Mar 2007
Posts: 124
Likes: 0
1. Used to get 17 mpg with the 31" tires, switched to 33" now says 15 mpg, but I have not corrected the speedometer/odometer fot the taller tires so maybe still in the 16 mpg range.
2. Naturally aspirated 7.3 IDI
3. Bone stock, no nothing, not sure if the IP was turned up but I highly doubt it since the only time black smoke comes out is under hard acceleration around 2900 rpm, and then its not thick.
4. 250 4x4 ZF 5 spd with 4.10 gears, though this thread is making me think 3.55s, or even 3.31s (is that right do they make those?), or 3.08s might be better.
All my driving is mixed highway/city never towing (dont have a trailer of any kind I just love diesel technology) at highway speeds I cruise around 60, rpms are about 2150.
2. Naturally aspirated 7.3 IDI
3. Bone stock, no nothing, not sure if the IP was turned up but I highly doubt it since the only time black smoke comes out is under hard acceleration around 2900 rpm, and then its not thick.
4. 250 4x4 ZF 5 spd with 4.10 gears, though this thread is making me think 3.55s, or even 3.31s (is that right do they make those?), or 3.08s might be better.
All my driving is mixed highway/city never towing (dont have a trailer of any kind I just love diesel technology) at highway speeds I cruise around 60, rpms are about 2150.
New User
Joined: Jun 2007
Posts: 15
Likes: 0
88 250 7.3 c6 auto 3 spd
60 mph 2500rpm
averaging 13.5mpg
all stock
34000 original miles(no lie)
looking for anything to bring rpms down
not sure of rear end, any suggestions to help me keep her running as long as you guys??
60 mph 2500rpm
averaging 13.5mpg
all stock
34000 original miles(no lie)
looking for anything to bring rpms down
not sure of rear end, any suggestions to help me keep her running as long as you guys??
Posting Guru
Joined: Dec 2002
Posts: 1,346
Likes: 4
From: missouri
Originally Posted by F250FarmBoy
Thats why a tach is in order for the '85. I'm curious what the RPM's are at highway speeds. I might need a change of shorts after I find out. It screams pretty loud, and I've been told I have a lead foot.
this is what mine looks like at crusing speeds
Elder User
Joined: Mar 2006
Posts: 901
Likes: 0
From: North-Eastern, Ohio
What gear ratio do you have 460429? I dont plan on going 80mph, I cant even go 80mph. The fastest the animal goes when I drop the hammer is 65-70 uphill or down.
Wish I had a 5-speed
Wish I had a 5-speed
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Posting Guru
Joined: Dec 2002
Posts: 1,346
Likes: 4
From: missouri
Originally Posted by F250FarmBoy
What gear ratio do you have 460429? I dont plan on going 80mph, I cant even go 80mph. The fastest the animal goes when I drop the hammer is 65-70 uphill or down.
Wish I had a 5-speed
Wish I had a 5-speed
Last edited by 460429_freak; Jul 31, 2007 at 06:01 PM.
Junior User
Joined: Apr 2004
Posts: 51
Likes: 0
From: Washington
1. 14-16 mpg running empty at 70-75mph, 2300-2500rpm. Just took a trip from SE WA to Great Falls MT and back. The elevation changes were 400ft to over 5600ft and the power noticably changed the higher we went.
2. 7.3 N/A
3. bone stock (still has soup bowl) with 240,000 miles
4. '89, F350, E4OD, 4.10, 4x4, CC, SRW
2. 7.3 N/A
3. bone stock (still has soup bowl) with 240,000 miles
4. '89, F350, E4OD, 4.10, 4x4, CC, SRW
Post Fiend
Joined: Jan 2000
Posts: 5,330
Likes: 17
From: Dryden, ON, Canada
1) 17 in town, 20 highway, ~15-16 towing my other truck, about 8-9K between truck and trailer, but, I was definitely not driving for mileage, pedal was to the rug on every hill maintaining 75 mph
2) 6.9 with Banks non gated turbo
3) turned up 3/4 turn, slightly modded 7.3 pump, straight piped, custom BHAF
4) 86 F250, 4x4, 305/70R16's, T19, 3.55's, reg cab SRW
Fuel mileage is down a bit from N/A, but, with the turbo came a lead foot.... LOL
I find I actually get better mileage doing 65 and spinning 2300-2400 than if I slow it down to 50 and turn 2000, was the same N/A too, more power on tap, less throttle needed to pull hills etc.
With the non gated turbo, it's even more emphasized, 23-2500 is where you want to be towing, that's where you have boost right now and aren't losing an inch on hills...
GPS'd top speed on the old girl is 95 mph, run out of RPM, with o/d, it'd break 100 easy
2) 6.9 with Banks non gated turbo
3) turned up 3/4 turn, slightly modded 7.3 pump, straight piped, custom BHAF
4) 86 F250, 4x4, 305/70R16's, T19, 3.55's, reg cab SRW
Fuel mileage is down a bit from N/A, but, with the turbo came a lead foot.... LOL
I find I actually get better mileage doing 65 and spinning 2300-2400 than if I slow it down to 50 and turn 2000, was the same N/A too, more power on tap, less throttle needed to pull hills etc.
With the non gated turbo, it's even more emphasized, 23-2500 is where you want to be towing, that's where you have boost right now and aren't losing an inch on hills...
GPS'd top speed on the old girl is 95 mph, run out of RPM, with o/d, it'd break 100 easy
Elder User
Joined: Dec 2006
Posts: 559
Likes: 4
From: On a farm.
Originally Posted by anothersteveg
Purely an academic discussion, but I thought it'd be useful.
1. What MPG do you get? City/Hiway, Towing or no?
2. Turbo or no?
3. Stock or no?
4. 250 or 350 single or dually, auto or Man.? Gears? 2or 4wd?
1. What MPG do you get? City/Hiway, Towing or no?
2. Turbo or no?
3. Stock or no?
4. 250 or 350 single or dually, auto or Man.? Gears? 2or 4wd?
2) Ist Generation Banks Turbo Kit
3) See #2. Turbo calibration on pump. 3-inch exhaust
4) F250HD Reg cab 4x4, C6, 4.10:1, 285/75R-16
Last edited by Jim Allen; Aug 1, 2007 at 03:57 PM. Reason: Left out one fact
Tuned
Joined: Oct 2004
Posts: 300
Likes: 0
1. What MPG do you get? 17-18 @65-75mph empty, 15-16 same speed towing my 20' box trailer
2. Turbo or no? factory turbo
3. Stock or no? bone stock
4. 250 or 350 single or dually, auto or Man.? Gears? 2or 4wd? F250 extended cab long bed with high-boy cap, 3.55 gears, 4x4.
Truck and trailer in question, ok looks like the forum thinks my photohosting site is err, not entirely legit and has censored it.
2. Turbo or no? factory turbo
3. Stock or no? bone stock
4. 250 or 350 single or dually, auto or Man.? Gears? 2or 4wd? F250 extended cab long bed with high-boy cap, 3.55 gears, 4x4.
Truck and trailer in question, ok looks like the forum thinks my photohosting site is err, not entirely legit and has censored it.
