Rear end ratio upgrade
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yup you wont be disapointed in the 4:10 at all
i had a 2004 ram 1500 single cab with 3:73's upgraded to 4:56's liked it
now in my megacab it was speacial ordered with 4:10's reallllly love them allot more than the 4:56's . now thats 2 different trucks and weights but having ssaid that for $hits and grins i drove a megacab with 3:73's and it was a dogg compaired to my mega with the 4:10's
i had a 2004 ram 1500 single cab with 3:73's upgraded to 4:56's liked it
now in my megacab it was speacial ordered with 4:10's reallllly love them allot more than the 4:56's . now thats 2 different trucks and weights but having ssaid that for $hits and grins i drove a megacab with 3:73's and it was a dogg compaired to my mega with the 4:10's
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Gears don't add any power, they simply give you a mathematical advantage and take a LOT of work off the transmission and put it on the engine, which is much better designed to handle it.
If ordering from the factory on a new truck, I'd opt for the 4.10s in a heartbeat. If purchasing aftermarket, I'd step right on up to 4.56s on a vehicle that was going to see larger tires and/or towing use.
200 more RPMs at speed will make such a small mpg difference you probably would barely be able to measure it, but that little bit of extra rpm will significantly help you get a load moving without as much pressure on the throttle.
IMO, if you're going to go to the expense of a gear swap, go straight to the 4.56s...
I have read in a Dodge truck towing guide, published in about 2005 that going from 3.92 gears in a 1500 to 4.56 effectively increases towing capacity by 1000 lbs. Also I read a link on another forum that pointed to some camper association page that basically stated the same thing. I'll try to find the site, but it was a few years ago that I read it.
Last edited by HammerZ71; 09-30-2009 at 11:42 AM.