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06-30-2003, 07:40 PM
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CC Member
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Join Date: Mar 2001
Location: elizabeth, nj, usa,
Posts: 105
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Not Ranked
Street Driving Gear Ratio's
what ratio's do you guy's run for daily drivers, I tend to like 3:73 to 4:10s. I know the car won't run much pass 125mph with the 4:10s, but the acceleration is awsome. I like to be able to go through the gears in a short distance as opposed to 60mph in first. come around a corner and it's 10-100 and back to 10 mph, in less than a quarter mile. what do you guy's think ?
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06-30-2003, 07:53 PM
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CC Member
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Join Date: Oct 1999
Location: Georgetown, TX. USA. Little North of,
TX
Cobra Make, Engine: SMC Motorcars 289
Posts: 831
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Not Ranked
I'm running 4:10's in mine. Goes like a bat out of hell off the line and doesn't smoke up the tires like a taller gear. Downside ( and I don't know what tranny you are using?) is I'm running 4k rpm at 70mph with a Wide-ratio Toploader. I am going to put in 3.55 gears. That will drop the rpm's to about 3300 at 70mph. Of course the sound that the small block makes cranking 4k in rpm's is awesome! Sounds like a Nascar!!! Especially when going under bridges!!! 
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Co-founder of the Texas Cobra Club.
Dave "Ren Man"
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06-30-2003, 08:00 PM
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CC Member
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Join Date: Dec 1999
Location: Halifax,
VA
Cobra Make, Engine: FFR 1204 With Stack Injection
Posts: 123
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Not Ranked
I take a lot of extended trips on the Cobra, so I like the 3.08 gears. Not as quick as a lower gear, but the fuel economy is nice, and at 1700 rpm at 60 mph, it's quiet enough to carry on a normal conversation.
David
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http://members3.clubphoto.com/david251117/guest-1.phtml
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06-30-2003, 08:02 PM
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CC Member
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Join Date: Apr 2003
Posts: 85
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Not Ranked
It depends on where you do most of your driving. Freeway or around town. Sounds like you do more around town, so lower gears would be more fun w/o a concern for that annoying high rpm whine at freeway speeds. I myself run 3.70's. Seems like a good comprimise and I can still squirt out of a cannon like an incestial Jody chasing after his sister Buffy, before Mr. French catches them in the act!
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06-30-2003, 08:21 PM
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CC Member
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Join Date: Oct 1999
Location: Stoneville,NC,
NC
Cobra Make, Engine: Factory 5 mk4 445 FE
Posts: 1,623
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Not Ranked
3:55's for me... 2000rpm @60...
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06-30-2003, 08:47 PM
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CC Member
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Join Date: Mar 2001
Location: elizabeth, nj, usa,
Posts: 105
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Not Ranked
what size tires do you guy's use ? (hight) and how hard do the 3:08s pull above 120mph, does it start to flatten out ?
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06-30-2003, 09:28 PM
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Senior Club Cobra Member
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Join Date: Nov 1999
Location: Folsom,
CA
Cobra Make, Engine: ERA 623, 427 S/C Cobra. Ford FE 428 Cobra Jet, Ford Nascar TL 4speed - with a touch of raw; "less is more" theme
Posts: 3,882
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Not Ranked
In General...
Not all, but in general I've found that most people with small block Cobras prefer 3.55s or 3.73s with 5speeds, and several with Big Block Cobras and Toploader 4speeds run 3.31s or 3.08s because the extra torque pulls you right through the gears.
These cars are so light, to me it does not make sense to run 4.10 rear gears, and especially with the 5speeds that have such low 1st gears anyhow.
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Duane
Western States Cobra Group 1998-2016.
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06-30-2003, 10:18 PM
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CC Member
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Join Date: Aug 2002
Location: Uranus,
cal
Cobra Make, Engine: NAF replica, 351W, about 420 HP
Posts: 3,046
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Not Ranked
3.08 in an 8.8 rear, 1800 RPM @ 80, Tremec 5 speed, 351W. Not the quickest in the world, but 130+ is FUN FUN FUN!!!
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Edley, The Cobra Rogue!
"If you think that you can cut it, if you think you got the time, you'll only get just one chance, better get it right first time. 'Cause in this game you're playing, if you lose you got to pay, and if you make just one wrong move, you'll get BLOWN AWAY. Expect no mercy.
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