3.55 limited slip, worth it compared to stock?
12-11-2006, 03:50 PM
#21
2nd Gear Member
Join Date: May 2006
Location:
Posts: 340
RE: 3.55 limited slip, worth it compared to stock?
Mine sucks on the highway, because I usually don't go under 90mph. By the way, gears only change your cruising mpg. If you don't accelerate quickly at every light you actually have better mpg around town.
12-11-2006, 06:22 PM
#22
RE: 3.55 limited slip, worth it compared to stock?
ORIGINAL: slow07
On a short highway trip (about 15 miles at 55 mph through rolling hills) I averaged 35.2 mpg with my 3.31s. Has anyone with 4.10s come close to this. BTW, mine is stock with an axle-back and 20s. Tire size is same diameter as stock.
I realize that some jealous person is going to probably call BS on this, but I know what I saw. I'm not going to argue about it.
ORIGINAL: KTownGT
nah, if you go from 3.31's to 4.10's, then you might have like 2 MPG difference. It is slight but it is noticeable.
If I were you I would go for the 3.5's and grab a tuneless GMS CAI, they add about a mpg and 25RHWP [sm=smiley20.gif]
ORIGINAL: Mike521
yea that's what I was thinking when I built it on the website -- 100 bucks when I'm spending 26k isn't much extra in exchange for some better pickup. like I said it'll be the only mod this car ever sees, in all likelihood
does anyone have accurate info as far as the gas mileage difference? seems like there are conflicting opinions.
if it's 1 mpg then I don't care, but if we're talking 5 or 10, well like I said this car is already going to blow away my current ride, so I don't really need every ounce of extra power
yea that's what I was thinking when I built it on the website -- 100 bucks when I'm spending 26k isn't much extra in exchange for some better pickup. like I said it'll be the only mod this car ever sees, in all likelihood
does anyone have accurate info as far as the gas mileage difference? seems like there are conflicting opinions.
if it's 1 mpg then I don't care, but if we're talking 5 or 10, well like I said this car is already going to blow away my current ride, so I don't really need every ounce of extra power
If I were you I would go for the 3.5's and grab a tuneless GMS CAI, they add about a mpg and 25RHWP [sm=smiley20.gif]
I realize that some jealous person is going to probably call BS on this, but I know what I saw. I'm not going to argue about it.
i doubt it, my buddy was getting 21 with 4.10s in his 99 but thats a shorter 5th gear so theses should be even better
4.10s will decrease your milage a whoping 2 mpg at most, 4.30s 2.5 sometimes 3, if you plan on going with something like a KB or just want to cruise, go for it, if not, just have 4.30s put in
Maybe if you were going down-hill the entire time or you accidently climbed into a Chevy Cobalt. fueleconomy.gov rates the 2005 mustang on the highway as follows:
12-12-2006, 02:45 AM
#23
1st Gear Member
Join Date: Nov 2006
Location:
Posts: 63
RE: 3.55 limited slip, worth it compared to stock?
I'm sure the numbers aren't perfect, but I think on average they are pretty close. I'm sure your friend does get 27 - 28MPG some of the time. I'm sure he gets less than that too. Had you said you got 27 - 28MPG I wouldn't have said anything, but there is no way someone can get 35.2MPG during regular driving conditions in one of these cars. Tell me I like to start arguments or whatever, I'll call BS everytime I see it.
-J
-J
ORIGINAL: slow07
Skinjob, everyone knows that epa ratings are somewhat bogus. Need proof??? The highway rating for a manual GT with 3.55s is the exact same as the one with 3.31.s. We all know that a slower spinning engine uses less gas with all other things being the same. I friend of mine says that he commonly gets 27-28mpg , on the highway, with his '05 GT manual. You have already proven, with some of your other post, that you like to start arguements. Don't start one with me.
BTW, mine is a manual.
Skinjob, everyone knows that epa ratings are somewhat bogus. Need proof??? The highway rating for a manual GT with 3.55s is the exact same as the one with 3.31.s. We all know that a slower spinning engine uses less gas with all other things being the same. I friend of mine says that he commonly gets 27-28mpg , on the highway, with his '05 GT manual. You have already proven, with some of your other post, that you like to start arguements. Don't start one with me.
BTW, mine is a manual.
12-12-2006, 12:05 PM
#24
2nd Gear Member
Join Date: Jul 2006
Location: Arkansas
Posts: 202
RE: 3.55 limited slip, worth it compared to stock?
Call it what you want. I saw the numbers. You didn't. You base your arguement off of typical numbers (of cars with lower gears). I am basing mine off of an actual number. In smiliar sircumstances, I got 29 mpg out of it a couple days after I bought it (less than 1000 miles). Due to breaking in (7300 miles) 30+ mpg is not unreasonable. I was somewhat shocked about it too, but numbers don't lie.
12-12-2006, 03:35 PM
#25
2nd Gear Member
Join Date: Nov 2006
Location:
Posts: 168
RE: 3.55 limited slip, worth it compared to stock?
I took a trip down the back roads this fall and stayed at 55 and the mileage was 30mpg. This is actual fuel used and not what the computer says. Although I have found that the computer is very close to actual. I have come to trust it.
12-13-2006, 05:16 AM
#26
1st Gear Member
Join Date: Nov 2006
Location:
Posts: 63
RE: 3.55 limited slip, worth it compared to stock?
ORIGINAL: MyGrabberOrangeGT
I took a trip down the back roads this fall and stayed at 55 and the mileage was 30mpg. This is actual fuel used and not what the computer says. Although I have found that the computer is very close to actual. I have come to trust it.
I took a trip down the back roads this fall and stayed at 55 and the mileage was 30mpg. This is actual fuel used and not what the computer says. Although I have found that the computer is very close to actual. I have come to trust it.
. 35 is still a long way off from 30 and unless you're driving downhill or maybe off the side of a cliff I just don't believe you'll ever get that in this car.-J
12-14-2006, 07:38 PM
#27
Join Date: Apr 2006
Posts: 18
RE: 3.55 limited slip, worth it compared to stock?
ORIGINAL: slow07
On a short highway trip (about 15 miles at 55 mph through rolling hills) I averaged 35.2 mpg with my 3.31s. Has anyone with 4.10s come close to this. BTW, mine is stock with an axle-back and 20s. Tire size is same diameter as stock.
I realize that some jealous person is going to probably call BS on this, but I know what I saw. I'm not going to argue about it.
On a short highway trip (about 15 miles at 55 mph through rolling hills) I averaged 35.2 mpg with my 3.31s. Has anyone with 4.10s come close to this. BTW, mine is stock with an axle-back and 20s. Tire size is same diameter as stock.
I realize that some jealous person is going to probably call BS on this, but I know what I saw. I'm not going to argue about it.
12-14-2006, 08:24 PM
#28
2nd Gear Member
Join Date: Dec 2006
Location: Louisiana
Posts: 270
RE: 3.55 limited slip, worth it compared to stock?
I said the same thing when I traded my 2004 dodge 2500 truck with a cummins. I have had my car 3 weeks and have modded the **** out of it. I plan to go nuts with this thing as the money comes available. NEVER SAY NEVER[sm=happy046.gif]
ORIGINAL: Mike521
thanks guys, I highly doubt I'm going to modify it. I'm not a racer, and my current car is a 97 altima, so I'm already getting something a million times more powerful than what I'm stuck with at the moment. plus I just don't have that kinda cash to throw around anyway
thanks guys, I highly doubt I'm going to modify it. I'm not a racer, and my current car is a 97 altima, so I'm already getting something a million times more powerful than what I'm stuck with at the moment. plus I just don't have that kinda cash to throw around anyway
12-14-2006, 09:45 PM
#29
2nd Gear Member
Join Date: Apr 2006
Location:
Posts: 213
RE: 3.55 limited slip, worth it compared to stock?
the thing is, I could see the the readout on the dash saying 35.2 mpg, but you did 55 for 15 miles....if that was right after filling up and resetting your mpg calculator, then it wasnt accurate. I've done that before, and for about 15 miles it said like 40 mpg, but thats cause i did like 55, after i had reset the mpg calculator. 15 miles isnt enough for the computer to be accurate on mpg
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