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1997COBRA
01-03-2006, 04:20 AM
i'm a daily driver but want to spice of my acceleration but not lose too much on gas, any suggestion on the types of gears or gas mileage specs? are 4.10s too much?

thanks guys:thumbsup:

SuperG
01-03-2006, 07:35 AM
I have 3.73's and I get anywhere from 24-27 mpg on the highway...as long as I stay off the throttle!

bluethunder
01-03-2006, 09:55 AM
If you want milage. go to 3:55's for S/C applications or 3:73's for a little more help. 4:10's will kill your milage.

Twice Bitten
01-03-2006, 10:06 AM
If you want milage. go to 3:55's for S/C applications or 3:73's for a little more help. 4:10's will kill your milage.


Yeah, but 4.10's sure feels good when you hammer it :thumbsup:

bluethunder
01-03-2006, 10:09 AM
Yeah, but 4.10's sure feels good when you hammer it :thumbsup:


Yea they do!!!! On my way right now to pick up some 4:30's for phoenix!

If ya Got the pocket book for the fuel, then go with 4:10's, If your a Broke bum like Most, go with 3:55's.

AirForce1
01-03-2006, 10:32 AM
I have 3.73's and I get anywhere from 24-27 mpg on the highway...as long as I stay off the throttle!when I am in the boost I think I only get 8 mpg... :eek:



And when I am just cursing I think it is around 10. Because I idle at 40-psi fuel press and when you get on it shoots up to 80. :eek:



Its that damn boost-a-pump. :D



I would agree with Joe (bluethunder) that if you have the money 4:10 are the way to go, and if you donít then 3:55 arenít bad either. Good luck.



03-04 Cobras come with 3:55 gears.

ORANGE CRUSH
01-03-2006, 10:58 AM
when i am in the boost i get only 8 mpg...:eek:

And when i am just crusen:cool: i get 10.:eek: Because i idal at 40 psi fule press and when you get on it it shoots up to 80.:eek:

Its that damn boost-a-pump.:D

I would agree with Joe (bluethunder) that if you have the money 4:10 are the way to go, and if you dont then 3:55 arent bad eather. good juck.:thumbsup:

03-04 Cobras come with 3:55 gears.


You give me gas.:fart:

sbc.cobra
01-03-2006, 11:15 AM
when i am in the boost i get only 8 mpg...:eek:

And when i am just crusen:cool: i get 10.:eek: Because i idal at 40 psi fule press and when you get on it it shoots up to 80.:eek:

Its that damn boost-a-pump.:D

I would agree with Joe (bluethunder) that if you have the money 4:10 are the way to go, and if you dont then 3:55 arent bad eather. good juck.:thumbsup:

03-04 Cobras come with 3:55 gears.

oh my God...i feel dumber for trying to read that...thanks aaron.

how do you know what your mpg is when you are in boost? and you only get 10 mpg on a regular basis? your car has major issues. i got 24mpg driving to San Antonio w/ the a/c on and the cruise set at around 80-85mph.

97CasperCobra
01-03-2006, 11:34 AM
Gears.....I'm getting some 4.10s put in when I redo my rear end in the Cobra. :thumbsup:

Firme
01-03-2006, 12:00 PM
cmon guys, lets keep it on topic.

cobrapace94
01-03-2006, 12:30 PM
I have 3.73 in my 5.0 (rev limitor a lot lower then the 4.6 mod motor) & I think they are perfect. My mileage did not change at all, except when playing around a lot. Since the supercharge I have picked up a set of 3.55's. If I had a mod motor I would go with 4.10's. That is unless you do a lot of highway driving, then 3.73's.

AirForce1
01-03-2006, 01:15 PM
oh my God...i feel dumber for trying to read that...thanks aaron.

how do you know what your mpg is when you are in boost? and you only get 10 mpg on a regular basis? your car has major issues. i got 24mpg driving to San Antonio w/ the a/c on and the cruise set at around 80-85mph.They are averages,



When I get in the boost a lot I only get 150 miles on a tank.



And when I donít I get 200 miles on a tank.



Those are the numbers that I get most of the time

I changed my first post if i makes you happy.

sbc.cobra
01-03-2006, 01:41 PM
They are averages,



When I get in the boost a lot I only get 170 miles on a tank.



And when I donít I get 230 miles on a tank.



Those are the numbers that I get most of the time

I changed my first post if i makes you happy.

ok, 170 miles/tank is about 13-14 mpg. 230 miles/tank is about 18 mpg (roughly).

i would go w/ 3.73 gears...those are a good gear for street use IMO. i like the stock 3.55 gears that i have though

AirForce1
01-03-2006, 01:54 PM
ok, 170 miles/tank is about 13-14 mpg. 230 miles/tank is about 18 mpg (roughly).

i would go w/ 3.73 gears...those are a good gear for street use IMO. i like the stock 3.55 gears that i have thoughSorry, it sould be 150 in boost and 200 not in boost i was not paying attention.

I got 230 when i was braking in the motor with the rpms at 2000-2500 all the time.

cobrapace94
01-03-2006, 02:02 PM
Remember he has a non boosted 97 Cobra, not a 03\04.

sbc.cobra
01-03-2006, 02:34 PM
Remember he has a non boosted 97 Cobra, not a 03\04.

good point...i wouldn't go over 3.73s for a daily driver.

AirForce1
01-03-2006, 03:37 PM
good point...i wouldn't go over 3.73s for a daily driver.
i agree. :stupid:

99CobraCrazy
01-03-2006, 09:42 PM
i'm a daily driver but want to spice of my acceleration but not lose too much on gas, any suggestion on the types of gears or gas mileage specs? are 4.10s too much?

thanks guys:thumbsup:
I have 4.10's in my non-charged '99. I love them and believe it was the best mod I did to my car. However, its not an everyday driver. I get 17mpg in city and 22 on hwy. She buzzes at 2650rpm at 70mph. I would probably go 3.73's for an everyday driver.

1997COBRA
01-03-2006, 11:20 PM
i'm pretty confident that i'm going to go with the 3.73's get some extra boost and not lose too much on gas mileage, thanks!

SuperG
01-04-2006, 07:48 AM
i'm pretty confident that i'm going to go with the 3.73's get some extra boost and not lose too much on gas mileage, thanks!
BTW, I should clarify that my highway mileage is pretty good because I have a Vortech S/C, which really doesn't add a whole lot of boost at low rpm's. Other S/C's may differ somewhat.

Anyway, good luck and enjoy the new mods!