+ 44's 
x 5.13s 
= 6mpg 
(but very fun to drive 
)
For those with 460's.....
Posting Guru
Joined: Jun 2004
Posts: 1,635
Likes: 0
From: Niceville, FL.
'83 F350 flatbed dump (10,000 lb. GVWR) w/C-6 gets 4-6 around town and short trips; 8-10 on longer trips. Doesn't seem to make a whole lot of difference empty or 1 ton load. Don't know what it would do loaded to the max.
Piffery1
Piffery1
Elder User
Joined: Apr 2003
Posts: 821
Likes: 0
From: Normal, IL
With a few carb problems, my 1986 F250 4x4, 460, C6, 3.55, in town I'm getting around 9-10, on the highway, around 65 and the tires way low(around 25 psi) I got just over 11, but I havent been on the highway since i filled the tires.
New User
Joined: Mar 2005
Posts: 9
Likes: 0
From: Anchorage
Buy American - Subaru is a death trap
If I wanted good gas mileage, I wouldn't own my 460-powered 1997 F350 crew cab. I live in snow country, I have a family of five...it is all about being safe on the road. Several years ago, we learned of a tragedy: Members of a family riding in the camper on a standard cab truck were lost when the camper rolled out of the bed on a twisty mountain highway. I will never allow passengers to travel unless they are buckled inside the cabin with me. I also invested in the best tie-down system I could find, adjustable turnbuckles linking chains to all four courners of the pickup bed. Never load a rig beyond its safe capacity. Plan your trip. Don't be stupid and pass when it isn't safe.
8 to 15 mpg is normal for this engine. I am getting 12-18mpg because I keep it tuned and use high octane fuel.
8 to 15 mpg is normal for this engine. I am getting 12-18mpg because I keep it tuned and use high octane fuel.
Last edited by Alaskan Dad; Mar 21, 2005 at 09:29 PM.
New User
Joined: Feb 2005
Posts: 4
Likes: 0
i see you did a 2ws to a 4wd conversion. i have a 76 f350 that i want to turn into a 4x4. can you give me any advise on that? my email is jerryk@annettholdings.com
Elder User
Joined: Feb 2004
Posts: 855
Likes: 0
From: Ocean Park WA
89 350 C-6 and US Gear under drive unit and 3.55 rear end. 10-13 running light @ 70, 13-15 @ 60, 10.5 from Ocean Park WA to Chicago with 27 foot Prowler and 1200 lbs of tools @ 60. Bone stock but kept tuned up.
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New User
Joined: Feb 2005
Posts: 4
Likes: 0
Originally Posted by QUEBEN
I have my newly built 84 F250 4X4 (used to be a 2x4), up and running now but I have a few questions. When I bought the truck in Az in was in pretty bad shape, it still ran, or should I say limped along but it needed some TLC. I have finally got most of it straight, but I am wondering... My fuel tanks have breather valves, ( like I see in the manuals for a vaccum canister) and a vaccum set-up. Problem is ever since I have had the truck it has only had about 4 vaccum lines, one to the auto tranny (its now gone since I have a manual) and and one from the heater motor, plus the Manifold vaccum and temperature on the front of the engine... Should there be more? Its an 84 and it says non-catalytic, so no CAT either. I'm just trying to figure this all out.
Freshman User
Joined: Apr 2005
Posts: 30
Likes: 0
From: Garden City, MI
Sorry that I am late, but I just joined.
I have a 35' Class "A" motorhome and it weighs in at just under the 18340# GVW when loaded for camping. I have a 460 EFI with a C6 and 5.12:1 gears and 8R 19.5 tires. I can tow a 10000# trailer with this unit.
I get 6.5 to 7.5 MPG with the coach alone and driving 55 -60 MPH. I have gotten over 8.0 at one time.
I get 5.5 to 6.0 MPG towing 7500# trailer with motorcycles in it.
"Doc"
I have a 35' Class "A" motorhome and it weighs in at just under the 18340# GVW when loaded for camping. I have a 460 EFI with a C6 and 5.12:1 gears and 8R 19.5 tires. I can tow a 10000# trailer with this unit.
I get 6.5 to 7.5 MPG with the coach alone and driving 55 -60 MPH. I have gotten over 8.0 at one time.
I get 5.5 to 6.0 MPG towing 7500# trailer with motorcycles in it.
"Doc"
Junior User
Joined: Mar 2005
Posts: 66
Likes: 0
I don't pass to many gas stations....
I don't pass to many gas stations with my 95 7.5L supercab 4x4 w/5-gear but on a recent trip from Calgary to Vancouver my tanks gave me 14-17.5 mpg depending on altitude (there were some damn long climbs but I managed to pass everyone else) and weather (I hit a blizzard, a white out, and one 45 min. road closure for avalanche control). I found that the harder (meaning faster) I pushed it, the better the return. On the last stretch of the trip I was right behind a newer S.D. diesel and I managed the 17.5 mpg doing 70-90 mph. This has happened before on previous trips as well. I'm not feeding you guys a line of B.S.- I ran the numbers 3 times (I'm one of those Carpenters who measures twice....).I've got 4.10 gears run a 285-16 all-season, and my only mods have been the K.N. filter and venturi tubes. I am planning on a better exhaust and chip (Tex likes his Superchip any feedback from guys running any of the other brands would be welcome.)- I'm not to bothered about losing a couple of mpg as I'll be pulling the 21' travel trailer we bought last year and I need some more power, I hate dropping a gear or two on inclines. That or frederic could send me his twin-turbo when it's ready-I'll even drive down to get it.
New User
Joined: Apr 2004
Posts: 11
Likes: 0
From: Lost River Valley
10 mpg average
1994 f350 4x4 dually with a 11x7 dump, 5spd, i average 10. regardless of how i drive.
i bought this truck out of a texas auction, and have replaced all sensors on the engine. chopped the exhaust and added a flowmaster. streamlined the airflow in and out!
Everyone may want to check out this link:
http://pesn.com/2005/03/17/6900069_Acetone/
possibly gain better mpg.
LowRange
GotToGoFord
i bought this truck out of a texas auction, and have replaced all sensors on the engine. chopped the exhaust and added a flowmaster. streamlined the airflow in and out!
Everyone may want to check out this link:
http://pesn.com/2005/03/17/6900069_Acetone/
possibly gain better mpg.
LowRange
GotToGoFord
Mountain Pass
Joined: Jan 2003
Posts: 226
Likes: 12
My '95 F250 4x4 w/460, E4OD and 265/75-16s (E load rated at 50psi) usually gets me 7.5 mpg in town, which is where I do most of my driving. I got 12 last time I got it out for a trip down the highway, but I've changed the exhuast from bone stock to Thorley tri y headers and a Flowmaster cat back (70 series) since then. I haven't taken it on any road trips lately since we usually take the Taurus when we go out of town.
