My Car Feels Slow...

[Robe81]

Keep in mind the install isn't cheap and you want a shop that can handle it. The MPG drop is minimum...gas mileage really!!??

Was thinking of finding an assembled axle to mitigate some of the install cost, but I'm still in the beginning stages so we'll see.

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[Robe81]

Former '21 Camaro LT1 here, your take is very similar to mine (https://www.mustang7g.com/forums/threads/10-speed-tune.175113/post-3506221).

The Camaro had immediate low-end power in nearly any gear, would push you back in the seat whenever you floored it. That feeling is addictive because of the immediate gratification feedback. The Mustang just isn't that way, unfortunately. I've accepted that my Mustang is a "boomer cruiser", at least in base GT form

I'm glad to hear its normal for us Camaro-to-Mustang converts and not just me! That 6.2 was a beast. Other than the motor and chassis though, the Mustang is a huge improvement in most ways.

 

[Robe81]

Its 3 things that are making you feel this -

1. The 3.55 gears.
2. The tall gearing of the getrag 6-speed.
3. The torque band of the Coyote is much higher than the GM pushrod.

I drove two GT manuals when I was shopping for my car and got the same impression. They were very underwhelming off the line with the 3.55 gears. IMO Anything manual under 3.73 is just too low. As soon as I drove the auto with 3.55 rear end and short gears it was NOTICEABLY faster off the line and it made up my mind against the standard manual.

I did not drive a PP with the 6 speed (3.73 gears) so I can't comment on the difference. I did however have a Mach with 3.73 gears and the Tremec and it felt much better that the S650 GT manual. Granted that transmission also had a shorter 1st gear.

Also keep in mind the Coyote makes its torque at higher RPM and it peaks around 5k. They like to rev and aren't know for low end torque like the GM V8s.

I agree. Having the Mustang has really forced me to change my driving style to achieve that go-fast feel. Not necessarily a bad thing, but just different. I never watched the RPM's so close with the Camaro or my Challenger before that.

 

[tastetickles]

Yes it is. The first few drives reminded me of my first car a Mazda RX-8…. Yes I know I know it’s slow in a straight line but it was exactly the feeling I wanted a high rev engine. My Focus RS slightly modded was a low rpm immediate push to the seat but it ran out of breath after 5.5K rpm, I didn’t wanna have the same feel from a car. Plus the Mustang being rwd I wouldn’t want it to be so torquey to be fishtailing all over the place, it just needed enough torque to not feel slow during cruising and the hp from the rpm range is available when I rev the piss out of it. Naturally the car would do better with better final gearing.

 

[EgoBoost]

Soler performance throttle controller. End of problem.

 

[AZ_Ryan]

Soler performance throttle controller. End of problem.

I didnt know those changed gears and added low end torque.

 

[EgoBoost]

I didnt know those changed gears and added low end torque.

did I quote you? Move on.

 

[AZ_Ryan]

did I quote you? Move on.

You didn't quote anyone. Sorry I hurt your feelings.

 

[NegativeMultiplier]

It's not...but it feels it. I think I know why and how to fix it, but I would like some smarter people than me to sanity check my logic. I'm not the most knowledgable with gearing so any help is appreciated.

For comparison sake, I am coming from a 2018 Camaro 1SS (non-1LE) 6-speed. I understand this car has 3.73 gears and hit peak torque at 4,400 rpm. (I bought it used so I cant speak to every spec on the car). This car delivered immediate throttle response and would slam you back in the seat with little effort. The car just "felt fast."

My Mustang GT is a non-PP 6-speed. I understand this means 3.55 gears (highway). I also understand that the peak torque is at 4,900 as well. This combo seems to overall make the car "feel" much slower. The car simply does not have the "slam you back in the seat" feel that the Camaro had.

I am thinking of swapping out the 3.55 gears for the Ford Performance 3.73 gears. Lots of threads on here about them being a good "all around" gear. Thats not my question. The question is, for those that can compare, will the 3.73 gears replicate the type of acceleration that I am looking for (aka 2018 Camaro SS) or are there other factors I need to consider.

For additional context, my Mustang is my "economical car" so I would be hesitant at this point to go shorter, such as 3.92 or 4.10 due to commute and gas prices.

There are a few things to note here, primarily that the Camaro has a Tremec and that it has a 3.73 diff. Having driven the 3.55 6 speed multiple times and having a 3.73 in my garage, I can say there is a noticeable difference in how the car responds. I can't say if it'll match the Camaro though, as I've never driven one of those.

That said, if fuel economy is relevant to you, be aware that the 3.73 will make the engine drink faster than the 3.55 does.

If you're given the opportunity, drive a manual with the 3.73 and see if it matches what you want before committing to a swap.

 

[ZXMustang]

I hear this sad tale day in and out. Then I tune them and they are out there running with stock hellcats, laughing at FBO camaros and M cars. Get a tune. Cased closed.

 

[needforspeedirl]

It's not...but it feels it. I think I know why and how to fix it, but I would like some smarter people than me to sanity check my logic. I'm not the most knowledgable with gearing so any help is appreciated.

For comparison sake, I am coming from a 2018 Camaro 1SS (non-1LE) 6-speed. I understand this car has 3.73 gears and hit peak torque at 4,400 rpm. (I bought it used so I cant speak to every spec on the car). This car delivered immediate throttle response and would slam you back in the seat with little effort. The car just "felt fast."

My Mustang GT is a non-PP 6-speed. I understand this means 3.55 gears (highway). I also understand that the peak torque is at 4,900 as well. This combo seems to overall make the car "feel" much slower. The car simply does not have the "slam you back in the seat" feel that the Camaro had.

I am thinking of swapping out the 3.55 gears for the Ford Performance 3.73 gears. Lots of threads on here about them being a good "all around" gear. Thats not my question. The question is, for those that can compare, will the 3.73 gears replicate the type of acceleration that I am looking for (aka 2018 Camaro SS) or are there other factors I need to consider.

For additional context, my Mustang is my "economical car" so I would be hesitant at this point to go shorter, such as 3.92 or 4.10 due to commute and gas prices.

Skip all the parts and tinkering and just put a blower on it and be done. 810 hp and custom tuning will cure all.

 

[DHGOOD]

I don’t drive Camaros. But my two S650s run quite a bit different from each other. Both manuals, DH with 3.73 vs GT’s 3.55s. The GT higher gear is even more so with the 20s having a tire more than 1” taller. The dark horse is more wicked up as expected because of the lower gear difference as well as trans gear differences and the shorter tires on the 19s. The GT will do about 118 at the top of third but I need to wind out fourth in my DH to see what speed that is. 1.42:1 3rd vs 1:24:1 4th the DH pulls great through 4th.
Short of it is, in my opinion the GT could use some 3.73s and that would be good and the car would be quicker but I drive it every day and 4.10s would be too low. So I’ll supercharger the GT and leave the 3.55s.

 

[EgoBoost]

…2018 Camaro 1SS This car delivered immediate throttle response and would slam you back in the seat with little effort. The car just "felt fast."

My Mustang GT…simply does not have the "slam you back in the seat" feel that the Camaro had.

…will the 3.73 gears replicate the type of acceleration that I am looking for (aka 2018 Camaro SS) or are there other factors I need to consider.

…so I would be hesitant at this point to go shorter, such as 3.92 or 4.10 due to commute and gas prices.

“This car delivered immediate throttle response.” “

That is what the Soler device will address with your Mustang that “doesn’t have the feel the Camaro had.”

You can also fine tune it on the fly which is cheaper than for a tune or risking gear install issues that may arise. For a couple hundred bucks it’s a no brainer.

My car had a blower (small pulley), fuel system, headers, full e85 tune and still felt sluggish due to the throttle response.

Those that don’t have experience with a MT-82D4 set up with a throttle controller are simply ignorant to it’s effectiveness.

 

[robvas]

Stupid throttle controllers don't do anything your foot wont.

 

[Robe81]

“This car delivered immediate throttle response.” “

That is what the Soler device will address with your Mustang that “doesn’t have the feel the Camaro had.”

You can also fine tune it on the fly which is cheaper than for a tune or risking gear install issues that may arise. For a couple hundred bucks it’s a no brainer.

My car had a blower (small pulley), fuel system, headers, full e85 tune and still felt sluggish due to the throttle response.

Those that don’t have experience with a MT-82D4 set up with a throttle controller are simply ignorant to it’s effectiveness.

Sorry I'm not familiar with the Soler device. I'm assuming your referring to the bluetooth throttle controller I saw when I googled it? I remember reading something about throttle controllers on my old 4-Runner being popular but I never ended up getting it. I cant believe Ford would make the same mistake with a Mustang GT...thats wild.

Edit: Just saw your earlier reply about the throttle controller.

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