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Foxbody Miles per tank?

  • Thread starter Thread starter randyp83
  • Start date Start date Nov 30, 2008
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Mindseye007

10 years still blowing strong
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#41
  • Sep 9, 2025
  • #41
$uperstang said:
220 with 4.10 gear, proper speedo and runs 11s
Click to expand...
What color speedo gear do you use? And what transmission T5 Z-Spec?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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#42
  • Sep 9, 2025
  • #42
I get like 1/4 tank per drive.

Usually i'm out enjoying the car, which doesn't translate to the best fuel economy.
 
Reactions: General karthief, AeroCoupe and Mindseye007

Noobz347

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#43
  • Sep 10, 2025
  • #43
I really like the sound of blower whine.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,249
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Sep 10, 2025
#44
  • Sep 10, 2025
  • #44
Noobz347 said:
I really like the sound of blower whine.
Click to expand...

Ha. On my Explorer ST i have an aftermarket boost gauge. WHen i'm in vac, it gets 24-28MPG. When i want to hear the turbos, it's like 10 MPG. So hard to stay out of boost
 
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FastDriver

I was uncomfortably high & wearing a helmet
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#45
  • Sep 10, 2025
  • #45
GT40 Tubular/GT40X/E-cam with 3.73s, T56, & 275/40/17 Michelin Cross Climates
20-22 mpg to and from work (mix if city/hwy)
Hwy: Typically 24-25mpg. 28 mpg best so far. Think it'll go over 30 if I try.

This translates to 250-300 miles/tank when refilling at the 1/8 tank white line.
I have cracked 400 mi on the highway.
 
Reactions: Mindseye007

nickyb

I gotta say i never painted my nuts, Never Ever
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nevada
Sep 10, 2025
#46
  • Sep 10, 2025
  • #46
Does any of us buy a v8 stang for gas mileage?
I measure smiles per gallon,and I'm banking big numbers.
 
Reactions: Noobz347

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
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#47
  • Sep 10, 2025
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I just did my 3rd fillup in a year of owning my car. If i recall, my trip odometer reading was like 172 miles but it wasn't completely empty. Since i rarely drive my car, when i do, i get 'on it' more often than not.
 

Noobz347

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#48
  • Sep 10, 2025
  • #48
giantpune said:
You can't really drive around all the time in vac, though.
Click to expand...

I think most here are familiar...

 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
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43,049
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#49
  • Sep 10, 2025
  • #49
nickyb said:
Does any of us buy a v8 stang for gas mileage?
I measure smiles per gallon,and I'm banking big numbers.
Click to expand...

And seriously... You don't get that premium exhaust note from good MPGs.


View: https://www.youtube.com/shorts/TzgvFN6vCmE
 

Mindseye007

10 years still blowing strong
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Sep 10, 2025
#50
  • Sep 10, 2025
  • #50
FastDriver said:
GT40 Tubular/GT40X/E-cam with 3.73s, T56, & 275/40/17 Michelin Cross Climates
20-22 mpg to and from work (mix if city/hwy)
Hwy: Typically 24-25mpg. 28 mpg best so far. Think it'll go over 30 if I try.

This translates to 250-300 miles/tank when refilling at the 1/8 tank white line.
I have cracked 400 mi on the highway.
Click to expand...
Dam that's sweet you can put it in 6th gear...for better fuel economy.
 
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Mindseye007

10 years still blowing strong
5 Year Member
Oct 21, 2020
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#51
  • Sep 10, 2025
  • #51
Noobz347 said:
And seriously... You don't get that premium exhaust note from good MPGs.


View: https://www.youtube.com/shorts/TzgvFN6vCmE
Click to expand...
That sounds like a farm tractor with open headers...lol
 

Noobz347

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#52
  • Sep 10, 2025
  • #52
Mindseye007 said:
That sounds like a farm tractor with open headers...lol
Click to expand...

I think it sounds like this:

View: https://www.youtube.com/watch?v=Acl_6owV3-c
 
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Mindseye007

10 years still blowing strong
5 Year Member
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#53
  • Sep 10, 2025
  • #53
Noobz347 said:
I think it sounds like this:

View: https://www.youtube.com/watch?v=Acl_6owV3-c
Click to expand...
Should be using double bass ...
 

Mindseye007

10 years still blowing strong
5 Year Member
Oct 21, 2020
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#54
  • Sep 10, 2025
  • #54
giantpune said:
Depending on the version of T56, the 6th gear really isn't that much more than 5th on a 5 speed. The T56 for "aftermarket 5.0" applications has a 0.62 6th gear. The T5 has somewhere around 0.78-0.63 5th gear, depending on the version. I was eyeballing the z-spec one (1352-0251) earlier that has the 0.63 OD.
Click to expand...
This is what I use a z-spec with 4.10 gears .
 

FastDriver

I was uncomfortably high & wearing a helmet
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#55
  • Sep 10, 2025
  • #55
giantpune said:
Depending on the version of T56, the 6th gear really isn't that much more than 5th on a 5 speed. The T56 for "aftermarket 5.0" applications has a 0.62 6th gear. The T5 has somewhere around 0.78-0.63 5th gear, depending on the version. I was eyeballing the z-spec one (1352-0251) earlier that has the 0.63 OD.
Click to expand...
0.5:1 6th. 0.74 5th in mine.
 

FastDriver

I was uncomfortably high & wearing a helmet
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#56
  • Sep 10, 2025
  • #56
nickyb said:
Does any of us buy a v8 stang for gas mileage?
I measure smiles per gallon,and I'm banking big numbers.
Click to expand...
Maybe not, but I get no fewer smiles out of the 87 octane tune.
 

Mindseye007

10 years still blowing strong
5 Year Member
Oct 21, 2020
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Sep 10, 2025
#57
  • Sep 10, 2025
  • #57
FastDriver said:
Maybe not, but I get no fewer smiles out of the 87 octane tune.
Click to expand...
87 octane tune , do you have a tune for 93 octane?
 

FastDriver

I was uncomfortably high & wearing a helmet
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#58
  • Sep 11, 2025
  • #58
Yeah... Just bumps up timing about 6* on the WOT table, and more gradually throughout the rest of the timing tables. I worried that it would affect my fuel mileage, but I didn't detect anything.
 

Mindseye007

10 years still blowing strong
5 Year Member
Oct 21, 2020
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ontario
Sep 11, 2025
#59
  • Sep 11, 2025
  • #59
FastDriver said:
Yeah... Just bumps up timing about 6* on the WOT table, and more gradually throughout the rest of the timing tables. I worried that it would affect my fuel mileage, but I didn't detect anything.
Click to expand...
How much hp lost with 87 octane over running 93 octane?
 

Noobz347

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#60
  • Sep 11, 2025
  • #60
Mindseye007 said:
How much hp lost with 87 octane over running 93 octane?
Click to expand...

None, if the engine only requires 87 octane.

There is no BTU difference in the two fuels. The 93 contains an additive package that helps prevent compression detonation. Sometimes, a portion of that package includes 10% ethanol. The ethanol will have much larger effect on fuel mileage than the octane rating.


Two pump fuels, one 91 octane no ethanol and one 93 octane no ethanol will be virtually identical in an engine that runs well on the 87.
 
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