The 2011+ Mustang Thread

[motorhead]

Originally Posted by ULTRAZLS1

A swap to 3.73 from 3.42= Big difference

This has historically been known as a waste of time in camaro and firbeird land. Opinions differ I guess.

That small of a difference could be had just by changing tire size.

[0-60n4.6]

the Mustang red lines at 7k so yeah its a big diff when you factor in the gearing in the mustang and the 7K red line it will make all the diff in the world...

[GTAHVIT]

Originally Posted by ULTRAZLS1

A swap to 3.73 from 3.42= Big difference

I would have to say yes. all things being equal (tire size, etc) that is nearly a 10% difference in wheel revolutions per drive line revolution..


That does change a lot. You guys may know this already but say you want to be at the top of 4th gear at the end of the 1/4 mile. The easiest way to do this is to pick a gear ratio that would get you there. Or you can take the reverse approach and try to get you 60' times better by changing the gear ratio.

Obviously there is much more to it than that but this is a simple example.

[ULTRAZLS1]

Like I said. Opinions vary. I would not waste my time for that much difference.

But I guess that would depend on what you are trying to do with the car.

From my experience most did not change out the 3.42 in the 4th gens for 3.73's because some had done it and not felt much difference.

Either way the mustang is crossing the traps at the perfect time with the 3.73's....so it is a good choice for the car. Same for the camaro. All though a gear may help the camaro get that weight going better off of the line and be worth an extra shift at the end.

[GTAHVIT]

Originally Posted by ULTRAZLS1

Like I said. Opinions vary. I would not waste my time for that much difference.

On a production car, I agree completely. Not worth it.

But when building a purpose built race car... it all figures in..

But I agree I wouldn't change it.

[ULTRAZLS1]

Originally Posted by GTAHVIT

On a production car, I agree completely. Not worth it.

But when building a purpose built race car... it all figures in..

But I agree I wouldn't change it.

Sounds good

[0-60n4.6]

If i could go back and not do my gear swap i would but like i said when talking a 7K red line then it makes it that more significant

[Whiskey Tango Foxtrot]

Originally Posted by ULTRAZLS1

Like I said. Opinions vary. I would not waste my time for that much difference.

But I guess that would depend on what you are trying to do with the car.

From my experience most did not change out the 3.42 in the 4th gens for 3.73's because some had done it and not felt much difference.

Either way the mustang is crossing the traps at the perfect time with the 3.73's....so it is a good choice for the car. Same for the camaro. All though a gear may help the camaro get that weight going better off of the line and be worth an extra shift at the end.

Umm there were plenty of gear choices for 4th gens. Maybe that's why there were not a lot of 3.73 gears. Most went to 3.93 for autos and 4.10 for manuals.

[ULTRAZLS1]

Originally Posted by Whiskey Tango Foxtrot

Umm there were plenty of gear choices for 4th gens. Maybe that's why there were not a lot of 3.73 gears. Most went to 3.93 for autos and 4.10 for manuals.

I never said they didnt have choices.

But yes 4.10 gears were what was popular. The stock gears were also popular. I kept the 3.42 in my car and loved them. I drove 4.10's before and I felt that the loss of traction and the extra shifting wouldnt really help much unless you were running slicks. First gear felt almost worthless with the 4.10 in a 4th gen 6 speed. I didnt think that on a 4th gen street car 4.10's helped very much. More fun yes.... but faster on the street, I would say no in my opinion.

[LSwon]

Originally Posted by nhra stocker

Claim?

Yes, a claim. It's just the same when Evan Smith runs a crazy time in a Mustang. I could take the spare tire/jack out, drop a K&N air filter and put a better street tire, scan my timeslip then post it on a forum claiming it's "bone stock".

No one would really know now would they?

Originally Posted by 0-60n4.6

the trap speeds dont have anything to do with it...i dont know why you gm guys always look at trap speed...with the 3:73 gears in the mustang and its still trapping 110 is crazy this tells me its going to be a very good low end car and a monster top end car aswell....i dont thing that ford has ever had a mustang gt that can run with a camaro on the top end 100+....we should all be excited about how much more fun the streets and strip are going to be because of what ford is doing which is joing the party and soak this in

Trap speeds have a lot to do with it, I don't understand where you're going with this. If a car is truly only able to trap 110mph it's only capable of so much especially on a stock tire in 3600lb car. HOWEVER, it's way too early to say at this point like I've said many times. Lets wait until the car is released. It could end up trapping 112-113mph+ for all we know, it certainly has the power to weight ratio to do so.

Originally Posted by ULTRAZLS1

Actually it is 3 tests. Car and Driver. Edmunds, And Motor Trend.

# 1 Edmunds 13.0 @ 110

# 2 Motor Trend 12.8 @ 110 (the one that counts)

# 3 Car and Driver 13.2 @ 109

Originally Posted by ULTRAZLS1

A swap to 3.73 from 3.42= Big difference

This has historically been known as a waste of time in camaro and firbeird land. Opinions differ I guess.

Yes it is a big difference, especially in a high revving modular motor than doesn't make as much power down low.

[25thanniversary]

don't know if it is a repost but here is a video i found of the new mustang vs the camaro

[Soundwave]

I have a feeling they did an ATX vs. MTX race there seeing that THIS Camaro is only .1 seconds behind this "$50,000" GT500 in a 1/4 mile.

[youngkim]

the camaro driver obviously can't drive worth shit. look how slow he takes off

[nick at night]

very biased. They were put on by FORD to show how much better the mustang is.