4:10's or 4:56? - Differential and axle

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Arrington Engines » Drivetrain and Chassis: » Differential and axle » 4:10's or 4:56?

4:10's or 4:56?

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drdred

Posted: Tuesday, February 12, 2008 8:25:33 PM

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I have the stock 3.92's in the truck and looking to upgrade. Now this is my daily driver and want better performace what else? I occassionaly tow 9000# trailer. The gears will definiately help but I'm afraid the 4.56's will kill my highway mileage? Also would I really notice the differance if I went to 4.10's

Motohead

Posted: Tuesday, February 12, 2008 9:58:03 PM

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What's the primary goal of the upgrade? Still have the stock tire diameter?

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daytonhemi25

Posted: Tuesday, February 12, 2008 10:27:49 PM

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stick with the 3.92s they are the best all around gear setup

drdred

Posted: Wednesday, February 13, 2008 2:10:13 PM

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Motohead wrote:

What's the primary goal of the upgrade? Still have the stock tire diameter?

Better performance on the street but also a bit of ooph for towing!

In the summer I have 33" 20" rim tires on

TheBossHEMI

Posted: Friday, February 15, 2008 6:13:29 PM

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If you're gonna put some serious power into it, you'll end up going back to the 3.92's. If you want some more umph without pushing more power through, yet retain highway ability, go with 4.10.

Take my opinion with a grain of salt, cause I have neither 4.10 or 4.56... but with 3.92's on stock 20's as well, this has been my dilema, and that's my conclusion. :)

drdred

Posted: Sunday, February 17, 2008 8:07:45 PM

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I lost power when I switched to the 20" wheels from my 17's! Lost .4 in the 1/4. Thinking the 4:10's will help.

Any one have those RPM calulators?

3rd Strike Performance

Posted: Monday, February 18, 2008 12:08:06 AM

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20's - 4:56 gears, 17's - 4:10s....Not much of a difference between the 392 and the 410, but the 456 will lite your truck up! I love em....

Duane Garrett
Owner, 3rd Strike Performance

drdred

Posted: Monday, February 18, 2008 1:34:55 PM

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What would be my RPM at cruise speed with 33" tires over my 3.92's? Its a daily driver and we travel with it!!

Motohead

Posted: Tuesday, February 19, 2008 1:03:55 AM

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Best I can find on the net 5th has a drive ratio of .67. With the 33s you'd be going 70 mph at 1880 RPM; with the 4.56s you'd be almost at 2200 RPM to hit 70, er, I mean 112.65 km/h.:)

2003 Ram
Arrington 426 stroker
TCI 727
FAST XFI
2006 Magnum R/T
Diablo
Flowmaster catback
Arrington heads/cam coming soon...
ARRINGTON POWER: When you're ready to get serious

drdred

Posted: Tuesday, February 19, 2008 9:36:10 AM

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Location: Ontario Canada

Thanks Jared. Little too high for trips.

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