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11-04-2011, 09:23 AM
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CC Member
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Join Date: Dec 2006
Location: Murrieta, Ca,
CA
Cobra Make, Engine: F5 stock 302 EFI
Posts: 67
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Not Ranked
Fuel mileage?
Well, I finally checked my fuel mileage after 2900 mi and I'm getting 21.7 mpg. Combination of freeway, mountain and backroads. Stock 89 5.0 EFI w/3.55 rearend. Is this about average for my setup? Thanks,Jim.
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11-04-2011, 03:43 PM
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CC Member
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Join Date: Sep 2009
Location: Camarillo,
CA
Cobra Make, Engine: SPF #2608, Roush 427SR T-W
Posts: 911
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Not Ranked
Wow, that sounds great. You can't be racing around much to get that kind of mileage. Have you checked your odometer with the mile markers on the freeway? Not all freeways have them so maybe not so easy in CA.
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11-04-2011, 04:02 PM
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CC Member
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Join Date: Nov 2007
Location: Clayton,
IN
Cobra Make, Engine: ERA 838
Posts: 1,137
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Not Ranked
I believe your number. With easy driving and a combination of city and highway I get low 15s on a regular basis. 447 FE, TKO and 3.54 rear.
John
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11-04-2011, 06:06 PM
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Senior Club Cobra Member
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Join Date: Jan 2001
Location: Santa Barbara, Ca.,
ca
Cobra Make, Engine: R.U.C.C. with a 427FE, toploader
Posts: 1,435
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Not Ranked
Quote:
Originally Posted by Grubby
I believe your number. With easy driving and a combination of city and highway I get low 15s on a regular basis. 447 FE, TKO and 3.54 rear.
John
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Nice! I got 11mpg once. 
__________________
Mike Z
Nothing sucks more than that moment during an argument when you realize you’re wrong. 
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11-04-2011, 06:15 PM
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CC Member
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Join Date: Aug 2009
Location: Adelaide,
SA
Cobra Make, Engine: AP 289FIA 'English' spec.
Posts: 13,152
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Not Ranked
You have a 0.62 overdrive fifth, don't you Jim? That would help on the freeway cruising.
Cheers,
Glen
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11-05-2011, 08:09 AM
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CC Member
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Join Date: Apr 2009
Location: Edgewood,
ky
Cobra Make, Engine: Backdraft Racing
Posts: 57
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Not Ranked
I have a Backdraft with a Ford crate 302, 340 HP + 5 speed. Onthe highway I get 25 mpg, all around, with not too much foot into it about 21 mpg.
The Cobra is my economy car!
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11-05-2011, 10:10 AM
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CC Member
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Join Date: Apr 2008
Location: Scottsdale,
Az
Cobra Make, Engine: Black CSX 4910, Roush 511 8 stack
Posts: 1,206
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Not Ranked
Who buys this car for Fuel mileage?  Seriously I was exited when I got 12 on the freeway in 5th at 70 mph. Around town about 5 or 6 but the smile factor is worth much more than the mileage |
11-05-2011, 01:35 PM
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CC Member
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Join Date: Dec 2006
Location: Murrieta, Ca,
CA
Cobra Make, Engine: F5 stock 302 EFI
Posts: 67
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Not Ranked
Yes, my 5th is .62 overdrive, so since any longer distance driving in So. Calif involves lots of freeway travel, I guess 21.7 mpg is about right.
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11-07-2011, 09:57 AM
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CC Member
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Join Date: Jun 2011
Cobra Make, Engine:
Posts: 20
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Not Ranked
I feel really fortunate when I get 8 to 10 mpg.
Usually hovers around 6.
429 with an automatic. Mostly around town or short stretch's on the freeway.
Seems like I can watch the gas guage move to the left very quickly.
Guess I enjoy the car to much to be worried about the mileage.
Always a fun ride.
Mike
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11-07-2011, 12:49 PM
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CC Member
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Join Date: Sep 2010
Location: Northfield,
MN
Cobra Make, Engine: B&B, FR302
Posts: 218
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Not Ranked
I get fuel when I need. Fuel mileage..........I could care less. It's just way fun! 
__________________
There are two kinds of people - those smart enough to know they don’t know, and those dumb enough to insist they do
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11-07-2011, 07:51 PM
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CC Member
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Join Date: Jul 2011
Cobra Make, Engine:
Posts: 65
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Not Ranked
The stock gas mileage for 1969 Mach1 428CJ was about 11 -13 mpg. Loose 1200 lbs (cobra) in stock tune it should get it maybe 5% better ?
I don't know larger Fe's have a hard time passing the gas pump.
Just thinking out loud....
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11-08-2011, 12:28 AM
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CC Member
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Join Date: Aug 2007
Location: Melbourne,
vic
Cobra Make, Engine: Kenmer with Ford Quad Cam Boss 260
Posts: 983
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Not Ranked
5.4 litre Ford quad cam (efi)
around town 10L per 100Km or 28 mpg
country cruise 7.9L per 100Km or 35.7 mpg
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11-08-2011, 08:54 AM
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Senior Club Cobra Member
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Join Date: Sep 2002
Location: Montgomery,
TX
Cobra Make, Engine: CR 427 S/C, 351W, 5 Sp & KMP142 - 427 SO, 4 Spd
Posts: 2,212
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Not Ranked
I seem to get about 10 mpg on my 427 SO. It has 2 710's and the 4 spd top
loader with the 3.54 so I am not complaining. Glad I have the 42 gallon tank
because there is no gas gage so I keep rough track with the odometer, so far that has worked just fine.
__________________
Flip
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11-08-2011, 04:15 PM
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Senior Club Cobra Member
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Join Date: Jun 2007
Location: Covington,
wa
Cobra Make, Engine: Superformance # 532, 466 BB, 560HP
Posts: 3,029
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Not Ranked
Mine averaged 8.5 MPG when we took it on vacation. That's the only time I have ever checked it. And the only reason I did then was because I recorded the mileage when I left home and returned. And I had all the gas slips so I could add up how much it used.
As the saying goes, your mileage may vary.
__________________
John Hall
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11-08-2011, 10:44 PM
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CC Member
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Join Date: Jun 2011
Location: Tucson,
Az
Cobra Make, Engine: Advanced Classic's
Posts: 43
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Not Ranked
Greetings from Arizona
Mike P, What are you running for rear gears and what transmission?
I'm running 429, C6, with 3:05's, 295/50r15's, Have not driven on freeway yet, but around town at about 45/50 mph is about 2500 rpm's Its seems like it wants $20.00 everytime it comes out of the driveway. And R Foot doesn't seem to know where to stop. I'll should be taking it to Phoenix next week for Goodguys to put in car corral, so we'll see how it likes higher speeds. Jay
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11-09-2011, 11:17 AM
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Club Cobra Member
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Join Date: Jan 2000
Location: Smartsville,
ca
Cobra Make, Engine: Former Everett-Morrison,428SCJ
Posts: 356
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Not Ranked
428, 2x4 500cfm carbs, 3.31 gears, toploader, 3200 rpm on the freeway.
8 3/4 MPG City/Highway/Uphill/Downhill
-Jon
Saving up for an overdrive.......better MPG, less noise, happier wife.
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11-09-2011, 07:14 PM
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CC Member
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Join Date: Jun 2011
Location: Tucson,
Az
Cobra Make, Engine: Advanced Classic's
Posts: 43
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Not Ranked
We use to say if you were lucky, that a Ford pickup with 460 got 10 mpg in town, 10 mpg hiway, and 10 mpg parked! j
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11-09-2011, 07:40 PM
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CC Member
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Join Date: Jan 2008
Cobra Make, Engine:
Posts: 773
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Not Ranked
LS6, 6 speed Tremec, 3:42 C5 Vette diff, C5 Vette suspension, over 30mpg and still fast. Went for a nice, loooong drive today in the Adirondacks. 64 degrees today!
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11-10-2011, 08:40 AM
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CC Member
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Join Date: Jun 2011
Location: Tucson,
Az
Cobra Make, Engine: Advanced Classic's
Posts: 43
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Not Ranked
I bet that was a nice cruise......Pictures? and 30 mpg Jay
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11-10-2011, 08:46 AM
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CC Member
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Join Date: May 2007
Location: Goshen,
ny
Cobra Make, Engine: Gary Edwards Racing 460
Posts: 444
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Not Ranked
10 MPG highway. Speed costs money... How fast do you want to go?
The guy at the local Sunoco loves me.
__________________
Its not the will to win that matters....Everyone has that. Its the will to prepare to win that matters.
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