Tuning dilemma

[nwsewell]

Matt also has the gear sets and the install kit. You can talk to him about changing gears and see what his opinion is. I would recommend 3.92's. I think you will find a significant difference in the performance of your truck after the engine and trans tune. I think with the tune, long tube headers, and the gears you will find a big difference in your 6 sec 0-60 times.
Jay

3.92s are a factory gear, correct?
I'm wondering how 4.10s or something in the 3.7x's would fare in the 8spd.
This is something ive never messed with before.

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[Pull Ya]

3.92's are a factory ratio. IMHO I'd probably stick with the 3.92's if it were mine. I think you'll be happier track wise and also street wise. 3.73's are not an option for the 1500 I don't believe. 3.21's. 3.55's and 3.92's are the common factory gears. Also if you don't have a limited slip, when and if you change gears, that would be a good time to install a limited slip.
Jay

 

[nwsewell]

3.92's are a factory ratio. IMHO I'd probably stick with the 3.92's if it were mine. I think you'll be happier track wise and also street wise. 3.73's are not an option for the 1500 I don't believe. 3.21's. 3.55's and 3.92's are the common factory gears. Also if you don't have a limited slip, when and if you change gears, that would be a good time to install a limited slip.
Jay

I already have the limited slip, i made damn sure that i got that option from the factory haha
I drove a truck with 3.92s and I liked it pretty well, but I do have to consider my endgame for the truck. I'm not much of one for drag racing, most of what i do is redlight to redlight, and the "side show" meets burning off my tires. Ideally, in the end when I'm completely done modifying my truck, i want to have it properly set up for drifting. With that in mind, it seems to me that 4.10s would be the better selection to be able to roast the tires more easily

Again, I have never done this kind of modification to a vehicle. I am completely inexperienced when it comes to axles, gear ratios, etc. So i appreciate your input

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[crackerjack1957]

Red light to red light ......not racing? ....drifting.....good luck with that lol

 

[Wild one]

I already have the limited slip, i made damn sure that i got that option from the factory haha
I drove a truck with 3.92s and I liked it pretty well, but I do have to consider my endgame for the truck. I'm not much of one for drag racing, most of what i do is redlight to redlight, and the "side show" meets burning off my tires. Ideally, in the end when I'm completely done modifying my truck, i want to have it properly set up for drifting. With that in mind, it seems to me that 4.10s would be the better selection to be able to roast the tires more easily

Again, I have never done this kind of modification to a vehicle. I am completely inexperienced when it comes to axles, gear ratios, etc. So i appreciate your input

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Haven't read the whole thread,but if your truck is a 4X4,you're pretty well limited to 3.92's,unless you hunt up the earlier AAM 8.25 front diff.The ring gear is welded to the carrier in the later ZF front diffs and is non-serviceable,meaning you have to buy a complete front diff with the gears you want. ZF front diff ratio's are the same as listed above 3.21/3.55/and 3.92.

 

[nwsewell]

Red light to red light ......not racing lol.....drifting.....good luck with that lol

Red light to red light is not the same as drag racing.
Are they very similar? Yes.
Are they the exact same? No.
If i was running 1/4 miles on a regular basis, i would keep my 3.21 gearing. But, due to the road conditions where i do most of my driving, i feel that the acceleration offered by the shorter gears will benefit me more than the top end I get having the tall gears. Plus, i imagine that having the 8speed will make up for any of the top end I would lose.

Drifting is already what i do the most of, when i do stupid **** in my truck. The truck already handles it just fine, although I often wish that I could break the tires free a little easier on dry ground, which is the major reason why I am now considering the 3.92 or 4.10 swap. I also plan on beefing up the suspension with hellwigs and end links, and im sure i will eventually lower the truck as well.

I'm not competing at a professional level, I am doing things that I enjoy, for no reason other than the fact that i enjoy doing them. The same as any and every other car enthusiast out there.

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[nwsewell]

Haven't read the whole thread,but if your truck is a 4X4,you're pretty well limited to 3.92's,unless you hunt up the earlier AAM 8.25 front diff.The ring gear is welded to the carrier in the later ZF front diffs and is non-serviceable,meaning you have to buy a complete front diff with the gears you want. ZF front diff ratio's are the same as listed above 3.21/3.55/and 3.92.

Fortunately, my truck is 2WD.
Having a 4x4 would have gotten me into a bunch of trouble i have no business being in lol

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[Pull Ya]

With the additional information, I'm thinking that 4.10's would work pretty well but maybe 4.56's would work even better. Just something else to consider.
LOL------nothing is ever easy----
Jay

 

[crackerjack1957]

Red light to red light is not the same as drag racing.
Are they very similar? Yes.
Are they the exact same? No.
If i was running 1/4 miles on a regular basis, i would keep my 3.21 gearing. But, due to the road conditions where i do most of my driving, i feel that the acceleration offered by the shorter gears will benefit me more than the top end I get having the tall gears. Plus, i imagine that having the 8speed will make up for any of the top end I would lose.

Drifting is already what i do the most of, when i do stupid **** in my truck. The truck already handles it just fine, although I often wish that I could break the tires free a little easier on dry ground, which is the major reason why I am now considering the 3.92 or 4.10 swap. I also plan on beefing up the suspension with hellwigs and end links, and im sure i will eventually lower the truck as well.

I'm not competing at a professional level, I am doing things that I enjoy, for no reason other than the fact that i enjoy doing them. The same as any and every other car enthusiast out there.

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Guess ya going to take on Ken Block........LoL

 

[nwsewell]

With the additional information, I'm thinking that 4.10's would work pretty well but maybe 4.56's would work even better. Just something else to consider.
LOL------nothing is ever easy----
Jay

At that point, i would be concerned with how badly the 4.56's would affect my highway mileage and top speed. Most of my driving is in town, but every weekend I take a 130 mile trip (roundtrip) to visit my girlfriend. Im averaging about 18-19mpg doing between 75-85.
Mileage is not my biggest concern, if it was i would still be driving my Kia, but I dont want to lose a ridiculous amount.

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[Wild one]

Red light to red light is not the same as drag racing.
Are they very similar? Yes.
Are they the exact same? No.
If i was running 1/4 miles on a regular basis, i would keep my 3.21 gearing. But, due to the road conditions where i do most of my driving, i feel that the acceleration offered by the shorter gears will benefit me more than the top end I get having the tall gears. Plus, i imagine that having the 8speed will make up for any of the top end I would lose.

Drifting is already what i do the most of, when i do stupid **** in my truck. The truck already handles it just fine, although I often wish that I could break the tires free a little easier on dry ground, which is the major reason why I am now considering the 3.92 or 4.10 swap. I also plan on beefing up the suspension with hellwigs and end links, and im sure i will eventually lower the truck as well.

I'm not competing at a professional level, I am doing things that I enjoy, for no reason other than the fact that i enjoy doing them. The same as any and every other car enthusiast out there.

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There is another option as far as a rear swaybar besides the Hellwigs 7/8" bar.A few guys have used the rear swaybar off a 2500 Ram.It's apparently even beefier then the Hellwig at 1".All you need is a couple pieces of flatbar to adapt it to the 1500's rear swaybar mounts.Just throwing it out there as another option,especially if you can scrounge up a used 2500's rear bar from a wrecker for less then the hellwig bar.

 

[Pull Ya]

You might be surprised about the 4.56's. While they might have an affect on your mileage, I don't think it will be as bad as you would think. It might be fun with that 8 speed. There are a few guys running 4.56's, maybe they will chime in on the affect those gears had on their everyday driving.
Jay

 

[crackerjack1957]

At that point, i would be concerned with how badly the 4.56's would affect my highway mileage and top speed. Most of my driving is in town, but every weekend I take a 130 mile trip (roundtrip) to visit my girlfriend. Im averaging about 18-19mpg doing between 75-85.
Mileage is not my biggest concern, if it was i would still be driving my Kia, but I dont want to lose a ridiculous amount.

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Leave the 3.21 in then, the 8-speed is geared low enough for off line performance.

 

[nwsewell]

Guess ya going to take on Ken Block........LoL

I would love to do what he does haha
I'm nowhere near that skilled, but that sure does look fun.

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[nwsewell]

You might be surprised about the 4.56's. While they might have an affect on your mileage, I don't think it will be as bad as you would think. It might be fun with that 8 speed. There are a few guys running 4.56's, maybe they will chime in on the affect those gears had on their everyday driving.
Jay

I'll definitely look into that. It might be worthwhile.

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[nwsewell]

There is another option as far as a rear swaybar besides the Hellwigs 7/8" bar.A few guys have used the rear swaybar off a 2500 Ram.It's apparently even beefier then the Hellwig at 1".All you need is a couple pieces of flatbar to adapt it to the 1500's rear swaybar mounts.Just throwing it out there as another option,especially if you can scrounge up a used 2500's rear bar from a wrecker for less then the hellwig bar.

Thats an interesting idea! Ill do some research on that, ive only ever heard of people swapping to the hellwig but it sounds like that might be a cheaper and stronger option

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[Wild one]

I'll definitely look into that. It might be worthwhile.

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4.56's with the 8 speed will basically make 1st gear useless with a 33" or shorter rear tire.It'll blow through 1st and 2nd in an instant.I wouldn't go any deeper then 3.92's if you want 1st to be a usable gear,lol.3.55's are a nice combo with the 8 speed,but FCA only ever offered them in the late 2013's with a Hemi and an 8 speed.Don't forget the 8speed has a 4.71:1 first gear,so keep that in mind if you're calculating final drive ratio's and torque multiplication in the various gears.

 

[nwsewell]

4.56's with the 8 speed will basically make 1st gear useless with a 33" or shorter rear tire.It'll blow through 1st and 2nd in an instant.I wouldn't go any deeper then 3.92's if you want 1st to be a usable gear,lol.3.55's are a nice combo with the 8 speed,but FCA only ever offered them in the late 2013's with a Hemi and an 8 speed.Don't forget the 8speed has a 4.71:1 first gear,so keep that in mind if you're calculating final drive ratio's and torque multiplication in the various gears.

How significant do you think the difference between 3.92 and 4.10 is?
As far as final drive ratios and torque multiplication go, you may as well be speaking a different language lol. I dont know what any of that means, or how to calculate it.
I dont mind 1st gear being ridiculously quick, but i dont want it to be completely and totally useless.

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[nwsewell]

Also, would it be smarter to do a gear swap before or after the tune?

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[Wild one]

Also, would it be smarter to do a gear swap before or after the tune?

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Try the tune first,you'll want the truck tuned regardless,then decide if you think you need to swap gears.After running on the freeway with guys who have 3.92's in their trucks and 33" tires,i like my 3.55's,lol.I went from 3.21's to 3.55's ,and if I didn't have a ****load of money ******* in this diff with 3.55's/Detriot True Trac and welded on Illicit relocation brackets,i'd be throwing the original 3.21 geared diff back in. I find the guys with 3.92's whining about oil temps and gas milege at 85+mph,which is basically freeway speeds here ,lol. Do the tune first,then go from there.Around town 3.92's or 4.10's are livable,but if you do any high speed freeway driving,they leave a lot to be desired with a 33" or shorter tire.