DaNd4Speed said:. Once you go past 4.10's you really will have a tough time fighting Civics past 120 mph!
DaNd4Speed said:Not really damage. I think it's the fact that with the increased power and such, you'll benefit more with a higher gear ratio. By running 4.10's or higher with a S/C you'll be spending more time shifting and you'll be bouncing off the redline more frequently. I've also heard of people "running out of gear" when running 4.10's or higher with a S/C. You would actually need to shift into 5th to cross the traps.
Remember, gears do NOTHING powerwise for a car. I've handed many stang's their ass with 4.10's with my 3.73 GT, and that's with no weight reduction! Just remember, whenever you go with a higher gear ratio you are ultimately sacrificing your top end to gain acceleration. Once you go past 4.10's you really will have a tough time fighting Civics past 120 mph!
sixstringthing said:is 2300 RPM at 70 in a late 01-up with 4.10's really true? I know 4.10's fit the powerband perfectly but it's not like you can't just downshift and put yourself in the powerband. I mean even with 3.27s right now I just cruise around in 4th on the highway and it feels like I have 4.10s.... then when I want I can just drop it into 5th and cruise along at both RPM's... best of both world kind of.
Sick96Stang said:Wrong!
Most stock mustangs have 3.27 gears from the factory. I have no idea why Ford put these gears in our cars because they’re awful. Despite what some “experts” might tell you, gears will not decrease your top speed in a mustang; in fact, they’ll probably increase it. If you were to top out your car with 3.27 gears, you’ll notice that the power just stops when you shift to 5th gear. This is because you are not in the car’s power band to pull the car up to higher speeds. Not only will steeper gears allow you to pull quicker, but they’ll also keep you in your power band which will, in turn, enable you to pull stronger in 5th gear; something you could NOT do before. Other experts claim that you will lose gas mileage due to the higher RPMs that your car will now be traveling at on the highway. In reality, you’ll lose maybe 1 MPG at best.
Thats from stangnet.com if you havent already read the article you should go read it here is the link http://www.stangnet.com/content/view/23//
Anybody debating 3.73's or 4.10's go read that article that is the real truth about 4.10's.
NoVenom said:sick96stang is 100% correct anybody that says differant is 100%wrong 4.10s are not to much for daily driving!!!!!! dont fear the gear!!!!!!!!!!!!
Instantiation said:First and foremost, a STOCK Mustang wont have the power to reach top speed in fifth, but most owners looking at gear swaps will have some more power on tap. Second, 4.10s are hella steep for a daily driver -- I'd definately stick with 3.73s as a max. I plan to do 3.55s in my car unless it's easier to get a 6 speed trown in than I am guessing up 'till now. A little steeper should help performance quite a bit, but I personally like getting 30mpg in a car that runs a high 13/low 14 quarter (though not with me driving because I'm a noob and have only gotten 3 times so far). And the steeper you go, the more wear the engine sees for every mile, as well as the transmission and anything else in front of the differential. For a daily driver, my $0.02 is definately no steeper than 3.73s.
-John
If I was going to stay n/a, I'd consider 4.10's., but going to put a KB on this winter, so it's 3.73's.NoVenom said:sick96stang is 100% correct anybody that says differant is 100%wrong 4.10s are not to much for daily driving!!!!!! dont fear the gear!!!!!!!!!!!!
Spreadman said:Oh, and another thing. Unless you HAVE 4.10s, or have HAD them.....you can quote theories until you're blue in the face. But fact is, nothing beats real world experience. And so far, the people praising 4.10's HAVE them.....and are offering reassuring words. The people AGAINST them, are people who don't have them, or have only HEARD things about them.
Take that into consideration.
boomshack said:Man this is getting heated up in here. Although there's a lot of back and forth on this the mechanics of it do make sense. I'll summarize what I gather from all this :
1. Gears do not give power. Only the engine can do that. Gears multiply the torque that helps spin the wheels. So the higher the gearing ratio the quicker the wheels get up and go.
2. Since higher gears get the car up faster, they sacrifice top end usabillity, hence why Ferraris and Porsches designed for speeds above 140mph keep their gearing in the low 3s so as to not run out of RPMs up high.
3. With a supercharger application the need to get up and go faster thanks to the 4.10s is no longer necessary since torque is increased at the flywheel.
So in a N/A car with approximately 255 lbs/ft torque (flywheel) x 4.10 = 1045.5
but increase that torque with boost and
355 lbs/ft torque (flywheel) x 3.27 = 1160.85
or even
355 lbs/ft torque (flywheel) x 3.73 = 1324.15
So more power wins every time even with a lower gear ratio. Does that make sense, or have I missed something? And guys, let's not get too pissed here at each other, it's all discussion about our passion, cars...so let's keep it fun.
2000BLKGT said:4:10s with a KB 6psi blower here.
More fun than I could ever imagine.
The car just freakin ripps.
Traction is not an issue...my right foot is the issue.
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