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3.21 vs 3.92: The Last Word

bucolic

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It's so simple to understand the gearing with something probably everyone has right in the garage or basement...a 10-speed bicycle.

Grab that bike and put it in 1st gear then get on an incline and pedal away. You'll get going easy and scoot up the hill but once you hit 3 miles an hour you're all done. The motor, which is you, can't create RPMs fast enough with that gearing to go any faster. That's the 3.92s and demonstrates why off the line they do better and also why they get poorer gas mileage.

Now go back, put in tenth gear, and take off. You'll be huffing and puffing and it will take a lot more effort to get going but soon you'll be up to speed and can accelerate up to 20 mph before the engine runs out of steam. That's the 3.21s. and demonstrates the extra effort off the line and the lower RPMs at speed and why they get slightly better gas mileage.

Now line up two bikes side by side, one in 1st and one in 10th, and have a race. The 1st gear (3.92s) will jump right ahead and leave the 10th gear (3.21s) in the dust. Given enough distance though the 10th gear will catch up and fly right past the 1st gear.

One step further, take one bike and remove the 10th gear, take the other bike and remove the first gear. Now you have an accurate representation of the 3.21s vs the 3.92s. The only difference is in the top end and bottom end with middle gearing the same.

Now that's the final word!!! (highly unlikely 🤣)
 

theblet

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It's so simple to understand the gearing with something probably everyone has right in the garage or basement...a 10-speed bicycle.

Grab that bike and put it in 1st gear then get on an incline and pedal away. You'll get going easy and scoot up the hill but once you hit 3 miles an hour you're all done. The motor, which is you, can't create RPMs fast enough with that gearing to go any faster. That's the 3.92s and demonstrates why off the line they do better and also why they get poorer gas mileage.

Now go back, put in tenth gear, and take off. You'll be huffing and puffing and it will take a lot more effort to get going but soon you'll be up to speed and can accelerate up to 20 mph before the engine runs out of steam. That's the 3.21s. and demonstrates the extra effort off the line and the lower RPMs at speed and why they get slightly better gas mileage.

Now line up two bikes side by side, one in 1st and one in 10th, and have a race. The 1st gear (3.92s) will jump right ahead and leave the 10th gear (3.21s) in the dust. Given enough distance though the 10th gear will catch up and fly right past the 1st gear.

One step further, take one bike and remove the 10th gear, take the other bike and remove the first gear. Now you have an accurate representation of the 3.21s vs the 3.92s. The only difference is in the top end and bottom end with middle gearing the same.

Now that's the final word!!! (highly unlikely 🤣)
Nice analogy. Finally word?

Unfortunately not lol
 

Scram1500

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It's so simple to understand the gearing with something probably everyone has right in the garage or basement...a 10-speed bicycle.

Grab that bike and put it in 1st gear then get on an incline and pedal away. You'll get going easy and scoot up the hill but once you hit 3 miles an hour you're all done. The motor, which is you, can't create RPMs fast enough with that gearing to go any faster. That's the 3.92s and demonstrates why off the line they do better and also why they get poorer gas mileage.

Now go back, put in tenth gear, and take off. You'll be huffing and puffing and it will take a lot more effort to get going but soon you'll be up to speed and can accelerate up to 20 mph before the engine runs out of steam. That's the 3.21s. and demonstrates the extra effort off the line and the lower RPMs at speed and why they get slightly better gas mileage.

Now line up two bikes side by side, one in 1st and one in 10th, and have a race. The 1st gear (3.92s) will jump right ahead and leave the 10th gear (3.21s) in the dust. Given enough distance though the 10th gear will catch up and fly right past the 1st gear.

One step further, take one bike and remove the 10th gear, take the other bike and remove the first gear. Now you have an accurate representation of the 3.21s vs the 3.92s. The only difference is in the top end and bottom end with middle gearing the same.

Now that's the final word!!! (highly unlikely 🤣)
Fortunately the Hemi revs to 6,000 rpm, my poor old chicken legs with bum knees are probably good for about 15
 

bigdodge

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I'm telling people to make more informed decisions. Not just listen to gospel from people who have a 3.92 Hemi 4x4 w/35" tires.

Decisions have consequences, but please stop telling people, "Oh you tow? Yea, that 3.92 is a requirement."
no one said it was a "requirement"
 

AngelPhoenix

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What's wrong with someone saying it's a "requirement"? Someone else will come along (like you) and tell them, "Don't listen to that guy, nothing required about it!"

And the person trying to make a decision will have to combine these differing opinions with their own research and *gasp* make up their own mind.

I know. The horror.
 

djevox

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Who said it was a requirement to tow? It just does it better, even above 25 mph.
Are 3.92’s a requirement to tow that heavy load from my pic earlier, or should I look at some custom 4.11’s?
 

fartsonunicorns

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It's so simple to understand the gearing with something probably everyone has right in the garage or basement...a 10-speed bicycle.

Grab that bike and put it in 1st gear then get on an incline and pedal away. You'll get going easy and scoot up the hill but once you hit 3 miles an hour you're all done. The motor, which is you, can't create RPMs fast enough with that gearing to go any faster. That's the 3.92s and demonstrates why off the line they do better and also why they get poorer gas mileage.

Now go back, put in tenth gear, and take off. You'll be huffing and puffing and it will take a lot more effort to get going but soon you'll be up to speed and can accelerate up to 20 mph before the engine runs out of steam. That's the 3.21s. and demonstrates the extra effort off the line and the lower RPMs at speed and why they get slightly better gas mileage.

Now line up two bikes side by side, one in 1st and one in 10th, and have a race. The 1st gear (3.92s) will jump right ahead and leave the 10th gear (3.21s) in the dust. Given enough distance though the 10th gear will catch up and fly right past the 1st gear.

One step further, take one bike and remove the 10th gear, take the other bike and remove the first gear. Now you have an accurate representation of the 3.21s vs the 3.92s. The only difference is in the top end and bottom end with middle gearing the same.

Now that's the final word!!! (highly unlikely )

Yeah how the **** is this such a big topic for discussion. literally the only difference is 3.92 has one more low gear and one less high gear. All the other gears are effectively the same. So the 3.92 will give you SLIGHTLY more power off the line, 3.21 will give you SLIGHTLY more better mpg at the top end. Otherwise there’s literally no difference.

Sitting in 6th with 3.21 is exactly the same as sitting in 7th with the 3.92 etc. only difference is the number on your dashboard.
 

theblet

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Yeah how the **** is this such a big topic for discussion. literally the only difference is 3.92 has one more low gear and one less high gear. All the other gears are effectively the same. So the 3.92 will give you SLIGHTLY more power off the line, 3.21 will give you SLIGHTLY more better mpg at the top end. Otherwise there’s literally no difference.

Sitting in 6th with 3.21 is exactly the same as sitting in 7th with the 3.92 etc. only difference is the number on your dashboard.
Well, we have to talk about something.
 

SnowBlaZR2

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What's wrong with someone saying it's a "requirement"? Someone else will come along (like you) and tell them, "Don't listen to that guy, nothing required about it!"

And the person trying to make a decision will have to combine these differing opinions with their own research and *gasp* make up their own mind.

I know. The horror.
You didn't hear? Decisions have consequences or something.
 

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