whats an overdrive unit?
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From: Connecticut
whats an overdrive unit?
Does anyone know what an overdrive unit is and who sells them?i was talking to someone today and told me it hooks up after the transfer case and you have a push button in the cab so you can lets say drive on the high way with off road gearing?anyone know who makes these and where to buy them?
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From: Houston, Texas
Overdrive is just a higher gear in your tranny.
Usually, off road gearing refers to an underdrive (with lower gearing), like a Klune-V ( www.klunev.com ).
I have not heard of an aftermarket OD unit, but you might check out this stie:
http://transmissioncenter.net/gear_v..._overdrive.htm
Usually, off road gearing refers to an underdrive (with lower gearing), like a Klune-V ( www.klunev.com ).
I have not heard of an aftermarket OD unit, but you might check out this stie:
http://transmissioncenter.net/gear_v..._overdrive.htm
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From: Connecticut
I know but its not part of the tranny is a separate unit that hooks up before or after your transfer case to change the gearing.lets say you have 5:13 gears or whatever and want to change them for highway driving.this thing hooks up like i said and in your truck you have a push button to make it like your stock gears.im not really sure what it is but i was told about it if its true then there must be one i dont think the guy had any reason to lie about one.ill find out sooner or later what it is.
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From: Houston, Texas
Why would you want to change gears for highway driving? Most vehicles with larger than stock tires are regear for decent highway driving, not for wheeling (gearing for wheeling is usually done by regearing your transfercase).
I am not really understanding why you would want to reduce the final ratio to your tires. Is it to lower the rpm and save gas? If so, I can tell you from experience, that with an undergeared vehicle, you will waste more gas since you have to keep it in a lower tranny gear to keep up with traffic.
I am not really understanding why you would want to reduce the final ratio to your tires. Is it to lower the rpm and save gas? If so, I can tell you from experience, that with an undergeared vehicle, you will waste more gas since you have to keep it in a lower tranny gear to keep up with traffic.
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From: Connecticut
yup its to lower the rpms.up here where i am alot of us plow snow with lifted trucks.we take the 38 inch tires or 44s or whatever tires we have on and put the stock tires on for hte winter to plow snow.most guys here dont regear like i did.so if i want to plow snow with my lifted truck and over unit would lower the rpms cause im running 5:13 gears and if i put the stocks back on and overdive unit will solve the problem.i know it sounds kinda strange and all.but its cheaper then buying another truck that i dont have the money for anyway.
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thanks for the tip gunsmoke may i ask why you want one?just wondering .how much do these thing cost and who sells them?theres gotta be a web site that has them for my 250.
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From: Purdue
Originally Posted by JeremyH
Why would you want to change gears for highway driving? Most vehicles with larger than stock tires are regear for decent highway driving, not for wheeling (gearing for wheeling is usually done by regearing your transfercase).
I am not really understanding why you would want to reduce the final ratio to your tires. Is it to lower the rpm and save gas? If so, I can tell you from experience, that with an undergeared vehicle, you will waste more gas since you have to keep it in a lower tranny gear to keep up with traffic.
I am not really understanding why you would want to reduce the final ratio to your tires. Is it to lower the rpm and save gas? If so, I can tell you from experience, that with an undergeared vehicle, you will waste more gas since you have to keep it in a lower tranny gear to keep up with traffic.
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From: Connecticut
yeah thats the mean reason just for the winter.I would be easy if i just bought another truck i guess for the winter but lack of money keeps me from getting a good used truck unless i wanna buy someones headache lol.I went to the website you post gunsmoke i dont see the units there for some reason.later
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From: Houston, Texas
Originally Posted by Purdue Offroader
I've never seen anyone regear their t-case for offroad use (other than swapping in a Klune-V) everyone i know just puts lower axle gears in (i'm puttin 4:88s in my jeep this weekend). Its a lot cheaper to do the axles than to put in an atlas or Klune-V. While its true the gearing does make up for the larger tires most of the people i wheel with do it so that they have a lower crawl ratio for the rocks. We don't do a lot of muddin so the fast tire speed isn't desirable but the incredible torque is. I definitely understand wanting an overdrive if your geared that low (especially if your putting stock tires on).
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From: Purdue
I dunno why no one runs one in my club then? We have a lot of comp drivers and they never use the 4:1 even though I have been thinkin about gettin a Tera Low. The only reason I'm gearing down right now is because I got a great deal on a couple axles. Front and rear geared to 4:88, arbs, and alloy shafts for 500 bucks.
Now back to overdrive I don't think that they'll really bring the gearing up all that much do they? Most of em I've read about are called gear splitters, they basically just give you in between gears so you can do like 1st, 1.5, 2nd, 2.5,.........you would get some higher gearing when you shifted it after your last gear but it didn't seem to me like it would be all that much improvement. I also don't know that I've ever seen one you can use on a 4x4. http://www.enjoythedrive.com/content/?id=27714
Now back to overdrive I don't think that they'll really bring the gearing up all that much do they? Most of em I've read about are called gear splitters, they basically just give you in between gears so you can do like 1st, 1.5, 2nd, 2.5,.........you would get some higher gearing when you shifted it after your last gear but it didn't seem to me like it would be all that much improvement. I also don't know that I've ever seen one you can use on a 4x4. http://www.enjoythedrive.com/content/?id=27714
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From: Houston, Texas
Woah, there are folks in your club that wheel in competitions and have stock gearing in a t-case?!?! Odd...I was just at the WE-Rock National Champoinship and everyone of those buggies had an Atlas in it.
That is a damn good deal you found!
Dont get me wrong, the gears in the axles help, but you can get a much lower crawl ratio by regearing your t-case.
That is a damn good deal you found!
Dont get me wrong, the gears in the axles help, but you can get a much lower crawl ratio by regearing your t-case.
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From: Cab of a truck
Those gear vendors over/under drive units cost a couple grand and you'll need to have your rear driveline shortened, and if the unit bolts AFTER your transfer case than you wouldnt be able to use the over or under drive mode in four wheel drive as you'd have different wheel speeds.
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