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CC Advertisers
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10-10-2011, 09:33 PM
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Senior Club Cobra Member
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Join Date: Oct 2006
Location: Santa Cruz,
CA
Cobra Make, Engine: SPF 2613 Titanium w/Black, Roush 402SR
Posts: 4,098
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Not Ranked
Quote:
Originally Posted by Cobrajames
I am averaging 13 mpg in my SB 427 with TKO600(.82 5th) and 3.46(?) BTR rear end. About half and half street/highway. Not much to brag about.
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Pretty much the same set-up. 13 mpg on the freeway is about the best I've gotten from my Roush 402 SR/TW. My BMW diesel does a bit better. I got nearly 37 mpg recently driving from Santa Cruz to Santa Barbara. 
__________________
Doug
No stop signs, speed limit - Nobody's gonna slow me down - Like a wheel, gonna spin it
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10-10-2011, 10:03 PM
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CC Member
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Join Date: Jul 2003
Cobra Make, Engine: Unique Motorcars 289 USRRC, 1964 289 stroked to 331, toploader
Posts: 1,127
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Not Ranked
Quote:
Originally Posted by terry mason
Took a trip out old 66 and up the Pacific Coast highway a couple of years ago and averaged 21mph. slab side with a 302 roller motor and t-5 3:5 9" 7500 miles in 31 days.
Great Trip!
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Dude, you need a real Cobra engine to get that speed up a lil' bit  !
7500 miles in 31 days... that's like 11.5hrs a day behind the wheel at that speed... you must have had a sore  !
__________________
Paul
Unique Motorcars 289 USRRC
1964 289 5-bolt block
Toploader and 3.31 rear
Last edited by PDUB; 10-10-2011 at 10:06 PM..
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10-11-2011, 06:41 AM
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CC Member
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Join Date: May 2010
Location: Indy,
IN
Cobra Make, Engine: Shelby American CSX6046 S/C 427 (482) Shelby CSX1006
Posts: 59
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Not Ranked
I have a CSX6000 with a Shelby 427/482 alum and 3.73 rear with W/R 4 speed top loader. I constantly get 5.5 driving 55, or around town. At first I though I had a leak! I have put around 700 miles on the car and it has never gotten any better.
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10-11-2011, 07:43 AM
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CC Member
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Join Date: Jul 2005
Location: Bartlett,
Ill
Cobra Make, Engine: Everett-Morrison LS1
Posts: 2,448
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Not Ranked
Wide , wrap around smiles cost fuel milage!!!!!
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10-11-2011, 09:08 AM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,617
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Not Ranked
Quote:
Originally Posted by Jimeg
Gentlemen, nothing wrong with getting good fuel economy, I envy you guys. I have clocked 2,200 mi on my Roush 427SR/TW 515hp. and the best I get on all all highway trips is 12.6 mpg. Around town I'm getting around 8 mpg.
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Same as mine. Everyone else (other than the 302's) are lying.
__________________
Jim
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10-11-2011, 09:13 AM
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CC Member
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Join Date: Dec 2010
Location: Allen,
TX
Cobra Make, Engine: Werk77 289FIA
Posts: 1,295
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Not Ranked
Quote:
Originally Posted by RichardCSX6000
I constantly get 5.5 driving 55, or around town.
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I think there is something wrong - I can understand large old style engines naturally aspirated and large carburetors around 10mpg
...but 5.5 --- nah, take a closer look at your jets. The spark plug will show you the story.
__________________
Scratch build 289 FIA see the Scratch builder forum on CC - sold
DRB GT40 MK1 red #49- sold
FF5 Mk4 #7733 302/T5/IRS - dark blue - sold
FF5 MK4 #7812 427/TKO/IRS - Guardsman Blue - sold
FF5 MK4 #8414 501/TKO600/48IDA Ollie the Dragon #91 - sold
FF5 Daytona Coupe 347/TKO/IRS Homage CSX2299 Viking Blue - sold
SPF 2063
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10-12-2011, 05:32 PM
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CC Member
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Join Date: Nov 1999
Location: Gilbert, Arizona,
Posts: 121
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Not Ranked
Laps per load
About 30 laps. Maybe 33 with an occasional yellow flag....
More important would be tires per season, then you know the fun factor is up there.
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10-12-2011, 08:59 PM
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CC Member
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Join Date: Jan 2011
Location: Bellingham,
WA
Cobra Make, Engine: SPO2089, Ford Crate 393 475 Hp
Posts: 187
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Not Ranked
I'm getting 12 mpg around town. Last check was ~15 on I-5. Harleys get 43-45 mpg and C-4 corvette 18 mpg around town and 25+ on long trips...
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10-16-2011, 05:01 AM
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CC Member
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Join Date: Nov 2007
Cobra Make, Engine: Contemporary-427 stroker
Posts: 349
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Not Ranked
ok. I have a 454 sideoiler with a Quickfuel 850, 3:54 gears, new Avons, and a new TKO 600 with a .065 overdrive. I just did 200 miles, 4-5 full throttle blasts and lots of 80 mpg cruising...... and I got 12.6 mpg. I was getting 9-10 mpg with the old toploader
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10-16-2011, 06:38 AM
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CC Member
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Join Date: Nov 2001
Location: Windham,,
Me
Cobra Make, Engine:
Posts: 1,590
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Not Ranked
I don't remember ever checking milage.Maybe I just don't want to know.Course it would not matter what it is, the fun factor is over the top.Know for certain the motor is running at peak efficiency thats all that matters to me.
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10-16-2011, 12:25 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
Quote:
Originally Posted by mdross1
I don't remember ever checking milage.Maybe I just don't want to know.Course it would not matter what it is, the fun factor is over the top.Know for certain the motor is running at peak efficiency thats all that matters to me.
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I'm with you. The only reason I knew mine from the trip was because I had my credit card records, and I wrote down the mileage at the beginning and end of the trip.
__________________
John Hall
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