[mikedoogen]

could someone give me all the details you know about switching the gearing on a 07 GT? or better yet give me a thread where all the possible info on this has been covered? Gas mileage? Is it hard to do? Which is most streetable? Price?

[Modern_Muscle]

I havent checked, but my little computer tells me
28.5-29.5mpg @ 70.
31-32mpg @ 65
33-33.5mpg @ 60

I can get over 400 miles per tank with highway and city driving, going easy in the city. I ususally average 23-27mpg avg by calculations.

I have 4.10s..but most will say that its better to have 3.73s if you do a whole lot of highway driving, but if you live in the city like me, you accelerate a lot, and the 4.10s are more fun to do that with

Total price youre looking at installed is usually around $500, unless you know someone that can give you a great deal. Make sure the person knows what they are doing, or you could be stuck with gear whine-which is annoying as hell-and I would suggest getting them installed by a shop with experience, rather than trying it yourself...It may be more expensive, but sometimes you can check with the dealer, and they will honor them into your warranty if they install them....
Hope this helped ya some

[TheUNZippee!]

In town fuel mileage can actually be improved during normal driving with 4:10's, as you are multiplying the torque the engine produces, which makes it easier to get the car rolling.

[Modern_Muscle]

Agreed...Ive talked to people that have hell/stall taking off from 2nd, I have no problem, and do it quite frequently to save gas and effort...

[Racinjason81]

are you serious you want 4.10s and worry about mileage.

[TheUNZippee!]

Not everyone uses their car for the same thing. If you can afford to use your car as an all out street warrior, that is cool. Some of us need to actually use our car to get to work & junk.
One of the cool things about todays technology compared to old, carburated push rod power, is the ability to actually get decent mileage out of your hot rod.

[wormster00]

+1... My gears are on the way. I'm curious about those high gas mileage figures, MM. I still have 3.55s and just went on a trip. I averaged around 26 mph at an average speed of 70 mph. Maybe if I had driven at 55 to 60, I could have gotten closer to 28. Might just be individual differences b/w cars (I have an 05 also)...

[Modern_Muscle]

Like I said, I can pull 400+ miles per tank, and I fill usually at a 1/4 or more, but i let it go to almost empty once on a trip (couldnt find a gas station) and was hitting 440 I think....
Average on 400 miles on 16 gallons is 25mpg. I average ~24 mpg city and highway combined, usually. Now that I live in the city, and play a lot, im averaging 18-20, btu thats with some play time included each day...