ididieseler
Registered User
what kinda mileage can i expect from a 4wd 7.3 with banks sidewinder and zf5 trans 4.10 gears and 35 12.5 15 tires. how bout 3.73 gears? or 3.54? 
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mileage question
- Thread starter ididieseler
- Start date
what kinda mileage can i expect from a 4wd 7.3 with banks sidewinder and zf5 trans 4.10 gears and 35 12.5 15 tires. how bout 3.73 gears? or 3.54?
I'm getting 17/20 with 4.10's automatic and 265/75 tires so I would think you could do at least 19 with 4.10's and 35's. Fuel additive does help a lot. Something to note, I was getting 14.5 mpg until I put in a 3" exhaust with a Flo-Pro straight through muffler. Gotta let that thing breath.
I get about 17-19 F350 4x ZF non turbo and 255/85/16's
The taller wider tyre may hurt a bit....
JM2CW
Al
The taller wider tyre may hurt a bit....
JM2CW
Al
rjglenn
Full Access Member
How are you all getting these great numbers? My running average is 12.1.
we can't touch those 2wd srw pickups with our 4wd duallies.but we can haul and tow without effort brother.
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'94IDITurbo7.3
HAMMER DOWN!
how you fitting 15's on your truck?
justinray
Contributor
I'm consistently getting 19-20. And ~14 pulling my camper (32' single slide out tongue pull @7600lbs)
Mine's 4-wheel drive... Maybe it's how I drive? That said I get 14 mpg towing 10,000 lbs so it all depends on how you use the truck.
Pushing those big tires, ptobably around 11 MPG if your lucky, and that's at 55 MPH. If your lifted even worse.
ididieseler
Registered User
it a 1978 f150, im puting a 7.3 in it
I've got almost the same setup, but do not have a turbo. I have a 4 inch lift, 4.10 gears, 35x12.50x16.5 BFG All-terrains, stock 1989 7.3 non-turbo, 143,000 miles, nothing ever done to the engine. With the c6 I was getting 12mpg, then I swapped in the zf 5 speed, and I now get 15mpg.
I will call some of the other guys out that are getting 19mpg; What type of fuel are you running? I am running pure watered down diesel from Krogers grocery store that I get a discount on when my wife buy's enough groceries. If you are running anything else, then of course you are going to get better mileage.
Taking out the lift and running regular tires, and then adding a turbo may help my numbers some, but I wouldn't think it would help that much.
I will call some of the other guys out that are getting 19mpg; What type of fuel are you running? I am running pure watered down diesel from Krogers grocery store that I get a discount on when my wife buy's enough groceries. If you are running anything else, then of course you are going to get better mileage.
Taking out the lift and running regular tires, and then adding a turbo may help my numbers some, but I wouldn't think it would help that much.
#2 diesel from the 76 station + Ford additive in my truck (Check my signature) I'm getting 17.1 on almost every tank. 65 down the freeway is 20 pretty easy. Off brand fuel usually does horrible things to fuel economy. If you're running 35's then there's a lot more weight to turn but you're effectively changing the gearing in the rear end so I'd tend to think that there is something wrong if you're anywhere near 10 or 11 mpg empty.
Your odometer could be throwing your mpg numbers if it isn't corrected for the larger tires.
redneckaggie
rebel w/o a cause
any answers you get wll be null and void because you are putting the engine in something with completely different weight, aerodynamics, and everything else that determines mileage.
just throwing that out there
just throwing that out there
ididieseler
Registered User
better than nothing
