4.10s
#1
4.10s
So as most of you know I've got the 2004 Mach 1. I was about to order some 4.10s for the rear a couple days ago but a guy I work with said that I should get a new trans with an overdrive gear so that I don't burn up my gears. It's got a t3650 trans now with the stock 3.55s in the rear. Is this true? Or could I put 4.10s back there and be fine? Also, what are some opinions in the 3.73s vs 4.10s? I just want more "umph" when I go to the track...
#10
Why is this in the power adder section? Moving to general tech....
Back to the questions. Whoever told you that doesn't know about modern cars I take it as you already have overdrive just like every other car since what the mid to late 80's. Your tranny will be fine, the rear end will be fine, the motor will be fine. If anything like others are saying I would of gone with more gear if your staying N/A.
Changing to a higher numerical gear ratio will lower top speed. However you will still never be able to go as fast as the top of 5th gear so it does not matter. Your city mpg will normally go up once you stop hitting the throttle alot in the city. Highway mpg will drop slightly normally 1-2 mpg.
Back to the questions. Whoever told you that doesn't know about modern cars I take it as you already have overdrive just like every other car since what the mid to late 80's. Your tranny will be fine, the rear end will be fine, the motor will be fine. If anything like others are saying I would of gone with more gear if your staying N/A.
Changing to a higher numerical gear ratio will lower top speed. However you will still never be able to go as fast as the top of 5th gear so it does not matter. Your city mpg will normally go up once you stop hitting the throttle alot in the city. Highway mpg will drop slightly normally 1-2 mpg.
#12
So right now I'm leaning towards the 4.30s, but regardless wouldn't I need a tuner to set my speedometer for the new gears? Or would the local Ford Service Shop have what they need to reset that?
#16
Bump.
#20
For my purposes, I think I'll just end up going with the gears and a speedcal. I may eventually end up getting a tuner, but for the amount of money I want to spend, this is more logical.
My car has got really good "get up and go", but I can alway appreciate more. I'm also looking to do some appearance mods before the end of the year or early next year as well. So I want to use my money wisely, considering the future mods I want.
My car has got really good "get up and go", but I can alway appreciate more. I'm also looking to do some appearance mods before the end of the year or early next year as well. So I want to use my money wisely, considering the future mods I want.
#21
no, that dude is full of it. The one mod I didn't do to my mach when I had it was 4:10 gears and it was a mistake. You have an extra 1,000rpms than 2v-3v cars so 4:10's are perfect. Besides, like everyone else has said, the 4v engine likes and needs to be revved.
Not sure what mods you have now, but add a mid-pipe, cat back, CAI, and custom tune you'll be right at 300rwhp and with 4:10's your be scooting pretty damn good
Not sure what mods you have now, but add a mid-pipe, cat back, CAI, and custom tune you'll be right at 300rwhp and with 4:10's your be scooting pretty damn good
#24
You are probably on the edge of running lean. The rule with mach's is after 3 mods that bring in more air you need a custom tune. My air/fuel ratio was so dangerously lean when I had a cat back, mid pipe, and CAI. I know it will cost more, but get a custom tune done at a tuning/dyno shop. It will make a difference.
#25
You are probably on the edge of running lean. The rule with mach's is after 3 mods that bring in more air you need a custom tune. My air/fuel ratio was so dangerously lean when I had a cat back, mid pipe, and CAI. I know it will cost more, but get a custom tune done at a tuning/dyno shop. It will make a difference.
#26
4.30's and hang on. I dont think you will regret done at all. Be safe and save some money for a dyno tune, money well spent. The 3650 already has a overdrive (5th gear) I think its .82 to 1. I dont know where his logic was coming from????
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