how much are 4:10s worth in the quarter?

eric n · Oct 11, 2005

So how much time should you pick up switching to 4:10s with a stick???? I was guessing 2/10ths of a second. For those of you who have made the change, what do you think.

Further with the following mods,

4:10's
Cat Back
CAI
And a Tune at GRC

What should I expect RWHP and 1/4 assuming I can drive (which may be a bs assumption)

I know that all cars and drivers are different

How much difference would nice sticky 275's make???

PS I'm still torn beteen a 06 stang and my buddies s351r. I can't make up my mind for poop.

How much I have to spend and how much I affect reliability to properly mod an 06 is a real factor. I'm giving myself one more month to pull some sort of trigger.

willys1 · Oct 11, 2005

I would stick with a 26' tall tire.410's should be good for 2-5 tenths depending on conditions.Dude you have 5 gears,go for the 430's

Fast05 · Oct 11, 2005

I just finished installing 4.10s in my car last night. I didn't take it to a shop, I had a buddy of mine who has done it before help. I have to say though, if I had known what 4.10s would feel like I may have gone with 4.30s. But no way I'm changing them now after 2 days of working on my car. I can't say how much they took off my 1/4, but I can certainly say there is a whole lot more of a put my pants in my seat feeling when I'm at wot

willys1 · Oct 11, 2005

In automatic fox bodies thats what people usaully say when they install 373's instead of 410's!! After you saying that I think 456's wouldnt be out of the question!!!

blackened · Oct 11, 2005

169stang has 4.56's (and a crap load of other bolt-on's) and is running mid 12's

willys1 · Oct 11, 2005

blackened said:
169stang has 4.56's (and a crap load of other bolt-on's) and is running mid 12's

at 60mph what rpm are you doing with 410's?

cleveland · Oct 11, 2005

410 gears are already pretty radical for our Auto 5 speeds, the manual guys should probably be looking at a 430 or a radical 456 rear.

My 410s will go in soon and Im sure they are good for a .2 - .5 in the 1320.

I'll be able to testify to what they can improve upon in another 10 days. I'll post here or make a new thread on my results.

-Dan

willys1 · Oct 11, 2005

No,,410's are "not" too radical.I went from 273's to 410's in my 5.0 4 speed auto..Going from 331's to 410's in a 5 speed auto,which motors breath's 10 times better then a 1993 5.0 is not radical at all..Im actually thinking 456's now!

cleveland · Oct 12, 2005

You just dont know do you....

The gear ratios in the new 5 speed are very different from past years. A 3.90 gear is ideal for the autos and a 4.10 for the manuals. Anything more than that is considered "radical".

I should also add that Im installing a 4.10 in my 5 speed auto. Radical isnt a bad thing.

-Dan

willys1 · Oct 12, 2005

cleveland said:
You just dont know do you....

The gear ratios in the new 5 speed are very different from past years. A 3.90 gear is ideal for the autos and a 4.10 for the manuals. Anything more than that is considered "radical".

I should also add that Im installing a 4.10 in my 5 speed auto. Radical isnt a bad thing.

-Dan

oh,,radical is a good thing,,sorry- The thing I "dont" understand is why the manual trannys have the 355's and the auto doesnt!!I guess its backwards now..In earlier stangs the auto had the bigger overdrive so it need a bigger gear then the manual!! IMHO 410's are nice,but 430's are "radical" Can someone please answer my question,what rpm r u at when doing 60mph with 410's??

drbobvs · Oct 12, 2005

If you're running about 1800rpm at 60 with the stock 3.55 (which you should be) you'll turn 2100 with the 4.10. 2100 at 70mph stock will give you 2425rpm.

willys1 · Oct 12, 2005

drbobvs said:
If you're running about 1800rpm at 60 with the stock 3.55 (which you should be) you'll turn 2100 with the 4.10. 2100 at 70mph stock will give you 2425rpm.

2100 with 410's??BEAUTIFUL!!Then 456's would add aproximitly 200 more rpm's!!Gotta love it!!!

JL_Tampa · Oct 12, 2005

4.56 is an 1/8th mile gear. It's a bit much for 1/4 mile.

willys1 · Oct 12, 2005

JL_Tampa said:
4.56 is an 1/8th mile gear. It's a bit much for 1/4 mile.

pfff,no way dude!513's are an 1/8 mile gear!Using 456's I dont see crossing the line much past 5500rpm!!Whats the red-line on the 05,06 GT's?

1fastz · Oct 12, 2005

4.56 if for a pure drag naturaly aspirated car .. it wont hook on the street and if you bother to put any kind of power adder on it you will be out of gear.

the gear ratios are the same for the standards the diference is the 05 up uses a 27 inch tall tire so they seem longer.

the 3.55 when you figure in the tire diameter is realy a barley taller final ratio then the old 3.08 was with the 26 inch tires that the old cars came on.

4.10s is farthest i would go if you plan on puting on a power adder hell if you plan on doing a serious power build up ie 450+ rwhp then the stock gear will sufice just fine or maybee a 3.73

willys1 · Oct 12, 2005

1fastz said:
4.56 if for a pure drag naturaly aspirated car .. it wont hook on the street and if you bother to put any kind of power adder on it you will be out of gear.

the gear ratios are the same for the standards the diference is the 05 up uses a 27 inch tall tire so they seem longer.

the 3.55 when you figure in the tire diameter is realy a barley taller final ratio then the old 3.08 was with the 26 inch tires that the old cars came on.

4.10s is farthest i would go if you plan on puting on a power adder hell if you plan on doing a serious power build up ie 450+ rwhp then the stock gear will sufice just fine or maybee a 3.73

I agree,power adders and gears dont mix!! But 456 would be great for n/a cars that like 0-60 performance,and 1/4 mile runs..Plus they keep you honest on the highways Personally,I dont like revving the motor,so I would have to keep it at 70-75mph to keep the revvs down! For me having stock gears makes going 80mph to easy,I dont need any tickets!Just me

RickETrash · Oct 26, 2005

i'm about to order gears for my 05 GT 5 speed.. i dont do a lot of highway driving, so should i go with 4.30s?? the only other mods i really plan on doing are exhaust, cai, and a diablo tuner for now..

gpp · Oct 26, 2005

for what its worth my o6 automatic turns about 2400 rpm at 60 mph and 3.73 dropped it to 2100.

cleveland · Oct 26, 2005

gpp, thats with the 4.10 gears, correct?

I drive at 65 now and its @ about 2400 according to my Diablo Tuner.

-Dan

how much are 4:10s worth in the quarter?

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