What MPG does your 6 cylinder achieve ??

For the sake of standardization, PLEASE list the following items....

1) Make/Model car
2) Engine Size
3) Tranny type
4) Rear End Gear Ratio
5) Fuel type (octane rating)
6) Mods (if any)
7) MPG City/Highway

1962 fairlane
200 (c5 head d8 block, stock cam,.030" over, 7.5:1 compression)
T5 '89 mustang 2.3L
3.50 w 245/45/17" tires
duraspark and 5200
not sure on city as I live in a small town but highway best to date is 27

No longer have it, but:

1970 Maverick
stock 170
3 speed on column
3.00 open rear
all stock
got 26-27 mpg pretty regularly on the highway.


I don't know what the '84 is getting, I have only been running it 1/4 mile at a time!

A 64.5 Mustang
170 bone stock
3 speed on the floor
2.77 rear
only mods are a pertronix set up on the distributor, and a 40,000 volt Mallory coil.
In the city its 23-25 mpg and 26-28 on the highway.

1) '62 Ranchero
2) 170 (tired, high-mileage, tons of blow-by)
3) 2.07 3-speed column shifter
4) 3.50
6) none
7) 20 city, haven't taken it on the highway in quite awhile.

64 Falcon
170
2.77
2.79 8"
Pertronix Ignitor, Accel Coil, NGK V-sparks plugs
20-21 mostly highway with mixed city.

What size tires are you 24+ guys using? Mine are 205/65/14.

68 mustang
200ci
stock c4 tranny
stock rear end 2.77?
mods WERE pacemaker headers, duraspark ignition, direct mounted holley 2300 500cfm carb, fancy plug wires... ummm and my best mpg to date was 16 mpg highway.. I got around 12 intown... most of this was doe to my driving habits... I installed my cam 2 days ago and a dual roller timing chain, and som ebetter springs and teflon seals.. and well see how she does...

Rebuilt 200, no smog, header with stock muffler, 1100 and Pertronix II: 22-24 highway, 12-16 in town.

1) '66 Mustang
2) 200 (d5 block & d7 head or vice versa)
3) C4
4) not sure
6) (skipped 5?) crane xr700 electronic ignition
7) 17mpg city/21-23 highway and only 1-2mpg less with a/c on


1) '67 mustang convertible
2) 200 (c5 block & head)
3) C4
4) stock
6) pertronix ignitor 1
7) 14mpg city/17 highway

I just did a tuneup with this car so hopefully I'll get better mileage.

What kind of terrain do you guys drive on? I'm pretty sure I used to get +5 mpg when I lived in Vegas where it was pretty flat but now I have a lot of big hills to drive up.

Make:
1962 Falcon Squire

Engine:
1965 spec 200
135,000+ miles

Transmission:
S10 T5 (nwc)
3.76 1st gear
0.72 5th gear

Rear end:
Formerly,
3.50/1, 7.25" rear
Now,
4 lug Mav 8"
3.40/1

"Economy" mods:
DSII
1980-ish holley 1946 carb
Idle set to 650rpm
205/70/14 tires @38psi
Removed lead from right foot,
happy to be last across the intersection,
cruise at 65mph.

MPG - city: 25 - 26
MPG - highway: 32 - 34
subtract 2-3 with A/C running
Rick

1) Ford Mustang Sprint 200
2) Stock 200
3) 2.77 3-spd
4) 7,25" , 3,20
6) Pertronix, new holley 1940,
7) average 25 MPG, mainly highway at 60-65mph

I'm going to have 5-speed transmission quite soon with
0.8 overdrive. Engine will be rebuilt also when the driving season
is over..

rickwrench":14ocolnk said:

Make:
1962 Falcon Squire
Engine:
1965 spec 200
135,000+ miles
Transmission:
S10 T5 (nwc)
3.76 1st gear
0.72 5th gear
Rear end:
Formerly,
3.50/1, 7.25" rear
Now,
4 lug Mav 8"
3.40/1
"Economy" mods:
DSII
1980-ish holley 1946 carb
Idle set to 650rpm
205/70/14 tires @38psi
Removed lead from right foot,
happy to be last across the intersection,
cruise at 65mph.
MPG - city: 25 - 26
MPG - highway: 32 - 34

Click to expand...

WOW !!!

rickwrench":2hx0sune said:

MPG - city: 25 - 26
MPG - highway: 32 - 34
subtract 2-3 with A/C running
Rick

Click to expand...

Pretty amazing.....People talk smack about emissions era carbs,
they are just as plain as other carbs if you simplify them a little!!

1. 64.5 mustang
2. 200ci block with 250ci head
3. 3.03 tranny
4. 3.00
5. low grade around town, 93 on highway... she seems to like it
6. aftermarket cam, clifford dual outlet header with 2.5" exhaust. YF carb. ram air setup.
7. city: unknown/highway: 27-28

1. 66 Mustang
2. 200 Block w/ Aussie Head and Holly 350
3. 3.00 Rear End
4. C-4 Tranny
5. FSPP Cam/Dual Outlet Pacemakers/ Duraspark II

20 City....and 23 Hwy

dang those 200's are putting down some good numbers. Anybody want to report what their 250 is getting.

1968
4.7L 600cfm
3.00
C4
Duraspark II GM HEI module
cheapest gas at the pump
city ?? highway 15mpg

I would guess my city mileage suffers due to a misalignment of the rearend unless there is some other reason the pass rear tire gets bald before the others..

My buddy has a
66 mustang
200
2.77
(unknown factory rear ratio)
DII, newer Carter carb from Colorado66 (i forgot to pay attention)
claimed around 25-27mpg on his last highway trip from Colo to Wash

-ron

1) Make/Model car 66 Mustang coupe
2) Engine Size 206 ci
3) Tranny type C-4
4) Rear End Gear Ratio 3:50
5) Fuel type (octane rating) 90-92
6) Mods (if any) Everything possible
7) MPG City/Highway 10 city-15 highway

1. 78 Zephyr
2. 200ci
3 C3
4. 2.73 (7.5)
5. 87 octane
6. High-flow air filter, Supertrapp
7. Approx 15 city 20 highway

fordman77":1ju7up0a said:

1. 78 Zephyr
2. 200ci
3 C3
4. 2.73 (7.5)
5. 87 octane
6. High-flow air filter, Supertrapp
7. Approx 15 city 20 highway

Click to expand...

Me too, sure would like to get those numbers up a bit.
I think I have a C4 though :

I would like to see them a little higher myself since gas went up to 1.19/l tonight.

I think the trans. is whats holding the mileage back, I need a T5