What's Next Is.....

[M1Speed]

I have decided to put 4:10's in the mach. Along with this i have decided to change transmissions, and put in a 6 speed with a different ratio to acommodate the 4:10's.:banana: This way put it in 6th gear and curise.

[rtusnake]

Don't be scared go with 4:30's or 4:56. What 6 speed are you going with? I noticed at the track sunday everytime you shifted gears your brake lights came on. Was you grazing the brake pedal?

[EZ SPEED]

:nice:

Funny that you mention this....I am installing the 4.10's in our Mach 1 right now. I started tearing it down last night. They should work really welll with the automatic in ours.

[TheJeanyus]

The high gear in the T56 in my Cobra is barely any higher than your 5th gear. The main difference is that the gears are closer ratio from gear to gear. I don't think the T56 swap will be worth what it costs. The 4.10s will be great. :yup:

[M1Speed]

Don't be scared go with 4:30's or 4:56. What 6 speed are you going with? I noticed at the track sunday everytime you shifted gears your brake lights came on. Was you grazing the brake pedal?

it might have im not sure.

so joesph what other one would you suggest, because i was planning on the t56 but the one that comes with .5 as 6th gear.

[Shorty]

alot of money considering you have a perfectly good tranny. wait till you kill it then consider a swap. you could almost get a blower for the price of a T56. :yup:

[M1Speed]

im going a different way with the car. Cornering. im trying to stay away from a power adder. But with the 4.10's in my five speed would to much gas for a daily driver. Thats why i was wanting a 6 speed for the extra gear for cruising.

[QWKSNKE]

6 -speed may be a good tranny for cornering.

I wonder though, if a 6-speed with 4.10's would be much (if any) better than your current 3.55's and 5-speed.

Let me look up some gearing stuff

[TheJeanyus]

Nathan and Scott both get over 25 mpg with 5 speed transmissions and 4.10s, IIRC. I don't think it'll be THAT much worse on gas. Seriously, how much gas money would you have to save to pay for that transmission? For what the tranny costs, you could finish your suspension and get a chip burned. :yup:

[QWKSNKE]

:hmm:

Your current setup's final drive ratio per gear (each tranny gear ratio x 3.55)

1st...... 11.99
2nd..... 7.1
3rd..... 4.68
4th..... 3.55
5th.... 2.41

Your current tranny with 4.10's
1st.... 13.85
2nd.... 8.2
3rd.... 5.41
4th.... 4.10
5th.... 2.78

t-56 with 4.10's

1st.....12.17
2nd.... 8.48
3rd.....5.86
4th.....4.10
5th.....3.28
6th.....2.54

[QWKSNKE]

biggest difference between the 2 trannys with 4.10's in the rear is that 2nd, 3rd, and 5th, will pull slightly harder in the 6 speed.

But on a road course, I wonder if the 6 speed would put you in the sweet spot on the tach or would it be to low and put you in the next higher gear :hmm:

[Sendero]

I gained gas mileage by going to a 4.10 gear. (18 city / 25 tip-toeing Hwy)
If you get 6th gear in the city, ticket costs will far outweigh any mileage savings
T-56's weigh 30 pounds more than a T-45 (because you sure don't need to swap to a Tremec 3650)
Our cars have the aerodynamic signature of a brick, you won't use 6th gear for long on any sort of a "load" situation
Automatic Mach1's have a cast crank which limits RPM potential


The only reason I was going to swap to a T-56 was for the .83 5th gear so I can pull straightaways a little better, otherwise the T-45 or T-5 is just fine. At 85mph I'm right about 3200rpm and I can pull 4th gear to well over 100mph and have reached 135mph in 5th. Can Mustangs go faster than 140mph, yes but they get unstable quick and it has nothing to do with suspension. With the stock wing on you probably won't get much past 145mph anyway.

If you really, really, really want a manual I suggest throwing in a five-speed.

[banditmwp]

I gained gas mileage by going to a 4.10 gear. (18 city / 25 tip-toeing Hwy)
If you get 6th gear in the city, ticket costs will far outweigh any mileage savings
T-56's weigh 30 pounds more than a T-45 (because you sure don't need to swap to a Tremec 3650)
Our cars have the aerodynamic signature of a brick, you won't use 6th gear for long on any sort of a "load" situation
Automatic Mach1's have a cast crank which limits RPM potential


The only reason I was going to swap to a T-56 was for the .83 5th gear so I can pull straightaways a little better, otherwise the T-45 or T-5 is just fine. At 85mph I'm right about 3200rpm and I can pull 4th gear to well over 100mph and have reached 135mph in 5th. Can Mustangs go faster than 140mph, yes but they get unstable quick and it has nothing to do with suspension. With the stock wing on you probably won't get much past 145mph anyway.

If you really, really, really want a manual I suggest throwing in a five-speed.

Whoa there, Mr. Overly Technical Guy! :poke:

He already has a five speed. :yup:

[QWKSNKE]

[ T-56's weigh 30 pounds more than a T-45 (because you sure don't need to swap to a Tremec 3650)


He is a manual which means he already has a 3650

[AngelEyes]

Nathan and Scott both get over 25 mpg :yup:
:eek2: Well we need to fix my car then. . . I get about half of that.

[Sendero]

He already has a five speed. :yup:

:doh:

For some reason I thought I saw a auto shifter in his car on the Dragon.


He is a manual which means he already has a 3650


Is that some new racial term? :jester:

[M1Speed]

Lee those ratios confirm what i want out of my car. The final drive in 6th will be about the same as my 3.55's now. But on the track i can get out of the hole a little quicker, as long as i can get the power to the ground. Thanks for all the input guys. :nice:

[TheJeanyus]

:eek2: Well we need to fix my car then. . . I get about half of that.
The generous pressure applied to the right-most pedal could have something to do with that. :poke:

[Scothew]

I can happily say Joseph is right, i get 25mpg with 4.10's :)

I wouldnt swap to a t-56. I dont think the benefits outweight the cost since you are already running a 3650, as others have pointed out already :)

[M1Speed]

The high gear in the T56 in my Cobra is barely any higher than your 5th gear. The main difference is that the gears are closer ratio from gear to gear. I don't think the T56 swap will be worth what it costs. The 4.10s will be great. :yup:

Im not going with the 03 cobra or 2000 cobra r t-56, im going with the t-56 viper spec its a little different ratios.

[uvbnhad]

I got ~30mpg with the chip and the 3.73s on the trip to Gatlinburg. I hit 390 miles on the tank and still had around 1/8th left.

[99LS1]

If the main purpose is for cornering, spend the money elsewhere. Even before that I'd go out and run events before dropping that kind of dough without first seeing how your current setup will work.

[TheJeanyus]

If the main purpose is for cornering, spend the money elsewhere. Even before that I'd go out and run events before dropping that kind of dough without first seeing how your current setup will work.
:stupid:

[93Cobra#2771]

If the main purpose is for cornering, spend the money elsewhere. Even before that I'd go out and run events before dropping that kind of dough without first seeing how your current setup will work.
x2