Next Mod, 4.10 gears or Nitrous Oxide kit? - Ford Mustang Forum
 
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post #1 of 14 (permalink) Old 05-09-2012 Thread Starter
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Next Mod, 4.10 gears or Nitrous Oxide kit?

I got some extra cash coming in and I'm wanting some better acceleration. Right now my 4.0 automatic has a CIA, 93 Tune + Aggressive shifting, X-pipe GT dual exhaust. I talked to Gear Heads in Arlington and they quoted me $600 for Ford Racing 4.10 + T-loc + New bearing and install. about the same price for a N2O kit. I'm on the fence because I would like to feel the power of N2O but at $4.75 a pound I could only spray on rare occasions. Is the 4.10 set up going to give me a significant gain? that do you guys get first?
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post #2 of 14 (permalink) Old 05-09-2012
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I would personally go for the gears. Your not getting power out of them but they will Gove you some crazy pull down the track. And once there in that's it you always have them unlike the nitrous. Plus the gears won't harm your motor like nitrous can in the long run

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post #3 of 14 (permalink) Old 05-09-2012
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I say get the gears, they'll make a big difference
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post #4 of 14 (permalink) Old 05-09-2012
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I would also say the gears. Plus if you do the work yourself the parts would cost less then 600 bucks.
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post #5 of 14 (permalink) Old 05-09-2012
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cI'm with Zac and 895.OLX.
With nitrous You'll go fast but you'll go left or right or in a circle. If you like driving on the highway I would go with a 3.55. Wiith your car you might want to go with a 3.73 instead of 4.10 unless you are going to race! You might want to Install a T-Lok 8.8. Start thinking about a driveshaft. Sorry got carried away.

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Last edited by neeby1; 05-09-2012 at 09:02 PM. Reason: correction
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post #6 of 14 (permalink) Old 05-09-2012
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I also would go 373's. The 4:10's are Nice if all you want to do is Drag Race but there's more times where your not going to want the 4:10's The 373's will give you the best of both worlds.

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post #7 of 14 (permalink) Old 05-09-2012 Thread Starter
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OK, The gears sound like a better choice. whats the advantage of 3.55, 3.73 over 4.10? I drive mostly city, but some highway. what kind of top speed difference are we talking about? do any of ya'll know the RPM difference with the different gear set ups at 75mph?
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post #8 of 14 (permalink) Old 05-09-2012
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I got the 4.10s. At 70mph I'm at 2600 rpms. With a custom tune I'm at stock gas mileage. I need to replace my driveshaft because I have a vibration after 90 mph. The nitrous would be fun and all, but really, are you gonna be spraying it all the time? With the gears you'll feel that acceleration all the time, without having to worry about really screwing your car up. If you're planning on going forced induction, i'd try and find a used 8.8 out of a GT. and $600 sounds right on the money for T-Lok, Gears, Bearing kit, and install. Don't forget you'll need 2 quarts of Royal Purple 75-140 gear lube for the install, and another 2 quarts for when you change the fluid after the break in.

Performance wise, according to my Trinity, My best 1/4 was 14.99@94.4 and my best 0-60 was 6.09

I'm averaging 15.1 1/4 miles and around 6.3 0-60's
This is with the 93 Race tune from BAMA. And I'm pretty sure that there is some +/- to be had by going off of the tuner for my times. The two times I've had a chance to go to the track I got rained out. Hope this info helps.

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post #9 of 14 (permalink) Old 05-09-2012
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Basically the higher the number the faster the take off and the lower your top speed, you always make a compromise with a duel purpose car. The numbers actually mean the ratio between the number of times the driveshaft turns in relation to the number of times the axle rotates.The higher the number the higher the rpms and the greater amount of torque at the rear wheels Pros run a 4.56 if you ran that rear you would rip your car a part if you are lucky you'll just smoke your tires until they blewup. Usually someone gets a 4.10 when they race at the track, the higher the number the bigger the investment in other things, tires,t lok, driveshft, suspention and horsepower or your just waisting your money.A 3.55 is great if you just want to go fast quickly and a 3.73 is probably what most V6 modder's have.
thit is my opinon.
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Last edited by neeby1; 05-09-2012 at 11:30 PM. Reason: correction
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In my mustang it is all city driving and i put 4.10s in and i actually get better gas mileage. If i ever put it on the high way i would just waist gas (fuel prices). But i love it when i floor it on the street and watch the speedo trying to keep up :smilie lol. If you do more of daily driving and mix of highway and city i would suggest the 3.73's or even maybe 3.90's if you can find them. It is all based on what you use your car for and what you want it to do really.
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ya if you were actually considering nitrous then i would suggest you do a lot more research until you are completely familiar with the ins and outs of the components necessary for a safe and successful nitrous setup. Then I would research how nitrous actually works (most people don't know its NOT flammable, it works as an oxygen compression system and thats how you get a bigger boom).
With that said I would suggest the gears are a better choice. Now what type of gear depends on a few things.
1. city or freeway? If you ever plan on doing an hour or more on the freeway stay away from 4.10s IMO
2. Automatic/Manual some people with manuals wont touch 4.10s because 1st gear becomes useless (mostly gts though)
3. do you ever plan on going forced induction? Any power adder whether its nitrous a turbo or s/c with once again make 1st gear useless if you get 4.10s. If you want to maximize power out of your forced induction then you will most likely want 3.73s or 3.90s at the most
hope this helps!

Another thing to consider could be getting longtube headers or even ported throttle body.

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post #12 of 14 (permalink) Old 05-15-2012 Thread Starter
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Quote:
Originally Posted by msupardonme View Post
ya if you were actually considering nitrous then i would suggest you do a lot more research until you are completely familiar with the ins and outs of the components necessary for a safe and successful nitrous setup. Then I would research how nitrous actually works (most people don't know its NOT flammable, it works as an oxygen compression system and thats how you get a bigger boom).
With that said I would suggest the gears are a better choice. Now what type of gear depends on a few things.
1. city or freeway? If you ever plan on doing an hour or more on the freeway stay away from 4.10s IMO
2. Automatic/Manual some people with manuals wont touch 4.10s because 1st gear becomes useless (mostly gts though)
3. do you ever plan on going forced induction? Any power adder whether its nitrous a turbo or s/c with once again make 1st gear useless if you get 4.10s. If you want to maximize power out of your forced induction then you will most likely want 3.73s or 3.90s at the most
hope this helps!

Another thing to consider could be getting longtube headers or even ported throttle body.
I've already done lots of research, I understand the differences between dry, wet and direct port systems. A nitrous system allows more oxygen to be available to combust with extra added fuel, a cheap alternative to forced induction but more complicated on FI motors than the old carb ones. My only problem is the cost of the dinitrogen monoxide its self, I wish I could find it for around $2-3 a lb. I don't plan on ever adding a turbo or supercharger unless I can find an inexpensive take off somewhere. My 2008 already has 60k on it, don't want to put too much into it if I'm going to get a newer Mustang in a few years anyways. I liked the idea of a nitrous kit cause I could take it off and put it on my next pony.
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Quote:
Originally Posted by hugo2x View Post
I liked the idea of a nitrous kit cause I could take it off and put it on my next pony.
You could always bring your supercharger with you as well. If you could find one cheap enough that is.

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post #14 of 14 (permalink) Old 06-29-2012 Thread Starter
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Got my gears installed today. I couldn't find any Ford racing 7.5 trac-lock in stock anywhere online. it seems ford no longer makes this part. The only other alternative I found cost more than twice as much, so I decided to just keep the open differential.

Now I just have to wait for break in, I'm at 15 miles right now. I used the Ford Racing 4.10 gears, and I didn't hear any wine from speeds 0-70. total price was ~$250 for gears and install bearing kit from American Muscle. Plus $250 (labor +oil) from Gear Heads Mustang performance garage. (the youtube video link below shows the shop)



I can't wait till I can finally test my new 0-60
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