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Old 05-24-2005, 12:28 AM   #1
playtime_04
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4.30's or 4.10

I'm tring to decide between the 4.30 gears and the 4.10 gears..could anyone help me out on this and tell my why you think one is better!
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Old 05-24-2005, 01:01 AM   #2
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Re: 4.30's or 4.10

The choice doesn't work that way... Let us know how you want to use the car and we can then give our recomendations...
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Old 05-24-2005, 01:05 AM   #3
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Re: 4.30's or 4.10

If you do a search, there are quite a few threads on 4:10 vs 4:30 gear selection/use.
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Old 05-24-2005, 01:42 AM   #4
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Re: 4.30's or 4.10

are you a stick or an auto mach1?
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Old 05-24-2005, 02:45 AM   #5
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Re: 4.30's or 4.10

most of the stick guys i've heard that went w/ 4.10s wished they went w/ 4.30s
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Old 05-24-2005, 02:50 AM   #6
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Re: 4.30's or 4.10

Quote:
Originally Posted by Fosters
most of the stick guys i've heard that went w/ 4.10s wished they went w/ 4.30s
I'm one of those but, I have since made that wish come true.

If you are going to keep the car NA(or a little spray) then go with the 4.30s. If boosting is in the future then 4.10s.
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Old 05-24-2005, 02:26 PM   #7
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Re: 4.30's or 4.10

Mach1 4R70W ratios as follows
2.84
1.55
1.00
0.70 (OD)


Manual
.62 ratio, 80mph, at X.XX:1 rear gear ratio

3.55 = 2304 rpm
3.73 = 2421 rpm
4.10 = 2661 rpm
4.30 = 2791 rpm
4.56 = 2960 rpm

top speed w/ 3.55s, 5th gear @ 6798 rpm = 236 mph
top speed w/ 3.73s, 5th gear @ 6780 rpm = 224 mph
top speed w/ 4.10s, 5th gear @ 6787 rpm = 204 mph
top speed w/ 4.30s, 5th gear @ 6769 rpm = 194 mph
top speed w/ 4.56s, 5th gear @ 6771 rpm = 183 mph

Auto
.70 ratio, 80mph, at X.XX:1 rear gear ratio

3.55 = 2602 rpm
3.73 = 2733 rpm
4.10 = 3005 rpm
4.30 = 3151 rpm
4.56 = 3342 rpm

top speed w/ 3.55, @ 5789 rpm = 178 mph
top speed w/ 3.73, @ 5775 rpm = 169 mph
top speed w/ 4.10, @ 5784 rpm = 154 mph
top speed w/ 4.30, @ 5791 rpm = 147 mph
top speed w/ 4.56, @ 5765 rpm = 138 mph
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Old 05-24-2005, 02:29 PM   #8
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Re: 4.30's or 4.10

Thanks for the transmission ratio's Orange Whip! I've been looking all over the Registry for a thread containing that info.

EDIT: Just noticed you didn't list all the ratios for a 3650. Could you post those ratios for 1-4th gear in a 3650 if you have it? Thanks!
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Old 05-24-2005, 02:36 PM   #9
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Re: 4.30's or 4.10

Here you go

Gear Type 5 Speed Manual 3650 trans
Final Drive 3.55:1
1st Gear Ratio 3.38:1
2nd Gear Ratio 2.00:1
3rd Gear Ratio 1.32:1
4th Gear Ratio 1.00:1
5th Gear Ratio 0.62:1
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Old 05-24-2005, 02:42 PM   #10
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Re: 4.30's or 4.10

great info man this ones getting stickied.

Good job
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Old 05-24-2005, 06:17 PM   #11
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Re: 4.30's or 4.10

all im gonna do to the mach is --- loudmouth 1, K&N intake, and a power programer! Now give me what gears you think i should go with!!?!?
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Old 05-24-2005, 07:37 PM   #12
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Re: 4.30's or 4.10

Quote:
Originally Posted by playtime_04
all im gonna do to the mach is --- loudmouth 1, K&N intake, and a power programer! Now give me what gears you think i should go with!!?!?
It really depends on what you want to do with your mach. If your just going to run around town and drag ocasionaly i would say 4.10. But perhaps you are more into drag racing and want to express the full potential of a 1/4 mile than your 4.30's are ideal. That doesnt mean that you cant drive 4.30's around town. They do just fine in city driving as well as highway speeds. Enough that they stay below 3000 rpm at 80 mph. 4.30's work the best with the 4 valve and stock transmission gearing. Our engines breath at the higher rpm scale and pulls harder during that range. That is what makes the 4 valve so special. You might loose a little top end because of the taller gear, but it more than makes up for it out of the hole.
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Old 05-25-2005, 10:13 AM   #13
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Re: 4.30's or 4.10

If I were going to seriously drag race my Mach, and still wanted 4.10's for street use....I would get 4.30's and some street wheels and tires about 5% more diameter than stock effectively giving me 4.10's for street use (4.30's 5% lower than 4.10's), and then correct speedo for 4.10's. Then use stock diameter race tires giving me 4.30's at the strip.

But with our .62 5th, if you like to drag race, 4.30's are not a problem for street use like in the past when OD gears were more in the .67 (T 45) and .68 (3550 and T 5).
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Old 05-31-2005, 11:31 PM   #14
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Smile Re: 4.30's or 4.10

I have to give 2 thumbs up to the 4.10 gears. I just had them installed last week and what a difference. To me, my Mach feels lighter and undoubtedly quicker. My biggest concern was the gas mileage, but this is not a problem @ all. I drive 100 miles a day and can usually get 285 miles out of a tank. Iíve been getting 275 since this install, but I've also been much heavier on the pedal. IMHO the 4.10 are the best balance for a street car.

Tom
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Old 05-31-2005, 11:41 PM   #15
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Re: 4.30's or 4.10

Quote:
Originally Posted by playtime_04
all im gonna do to the mach is --- loudmouth 1, K&N intake, and a power programer! Now give me what gears you think i should go with!!?!?
If this is your DD, then I would go with 4.10's. I have 4.10's, but probably would have went with 4.30's if I was gonna stay N/A. As a second car, 4.30's would be good.
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Old 06-19-2005, 05:09 PM   #16
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Re: 4.30's or 4.10

This question has big a really big hurdle I haven't quite jumped yet. My buddy around town has 4.30's and loves them at the track, but come to highway draggin I always hear him talkin about.....

"waiting for someone to slow down so he could get into 3rd gear"

I don't wanna have to wait for someone to slow down so I can get in a good gear to rape someone. I wanna be able to punch it and go.

You think 4.10's then??
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Old 06-20-2005, 12:02 PM   #17
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Re: 4.30's or 4.10

I had both in my mach, and 4.30s are my preference. There is 100rpm difference in cruise RPM, big deal. As for the highway deal, its more of the same.... there would only be a couple hundred rpm max difference in third gear, so I dont see the argument.
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Old 06-20-2005, 12:25 PM   #18
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Re: 4.30's or 4.10

4.30's all the way...

... maybe even 4.56's if you're serious about drag-racing.
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Old 08-11-2005, 02:22 PM   #19
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Re: 4.30's or 4.10

My car only picked up a few hundredths with 4.10's. I'd go 4.30's or 4.56's if I were doing it again.

Lee
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Old 08-31-2005, 12:22 AM   #20
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Re: 4.30's or 4.10

so what are the rpms like for city driving (35-50) with the 4.10's? 4.30's?
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Old 08-31-2005, 07:50 AM   #21
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Re: 4.30's or 4.10

You can use 4th and 5th around town without lugging the motor when you have 4.30s, so cruise rpm is still very low.

Also, you're unlikely to see any change at all in your in-town gas mileage with the gear swap. I didn't.
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Old 09-12-2005, 04:55 AM   #22
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Re: 4.30's or 4.10

Where the cheapest place to but 4.30's. Buying it soon need the info
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Old 09-12-2005, 08:34 AM   #23
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Re: 4.30's or 4.10

The cheapest I've seen lately. Mustang Tuning
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Old 09-12-2005, 12:26 PM   #24
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Re: 4.30's or 4.10

4.10s and 4.30s suck for roll racing(unless its 1st gear 10mph stuff), if that's all you're interested in then keep the 3.55s.
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Old 09-12-2005, 08:59 PM   #25
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Re: 4.30's or 4.10

Where to buy the cheapest FR 4.30's? thanks
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