I have heard that an aftermarket tranny will give you a pretty good boost in power and mileage, I was just wonderin from anyone that actually has one what increase you noticed, if any and what kinda money you sunk into the new tranny.

I only ask cause I'm lookin at pickin up a excursion and can't decide on the 7.3 or the 6.0, I know the 6.0's have some issues and would rather have a 7.3 but I have a 7.3 in a reg cab 4x4 right now with 35's and I get about 13.5 around town 15 on the highway. driving the excursion on trips I'd like to get as close to 20 on the highway as I can and I've heard rumors of those numbers out of a 7.3 with an aftermarket tranny and your standard mods ie. exhaust, intake, custom tune.

so anyone who actually put out the money for one of these got any opinions?

A trans can't give you power. It can only deliver the power in a better (more efficient way).

An aftermarket trans won't give you any more mpg provided your OEM trans is properly maintained.

The best thing you can do for mileage is no lift, tire pressure, slow down, air, exhaust, and get ride of excess weight. A mild tune will help but usually decreases MPG because of the stupid pedal factor.

Much more than that and you need to start looking at 2wd vs 4wd, skirting, etc. and basically make your truck into a car.

7.3 is better engine period.

I have a trans controller with built trans and saw no increase in mpg.

I do have a firmer shift, heavy duty parts, etc.

I also have an exhaust, intake, and zoodad mod and can get 20-23 in the flats unloaded but stopped caring long ago as it is a truck and you don't buy them for economy.

Big lifts and big tires suck fuel. Keep it low with narrow (stock) tires to keep mileage up. If you want to lift it an look cool, you have to pay the cost to be the boss.
Travis..

I wasn't asking for comments from the peanut gallery I want to here from people who have laid out the money and what results they got. The last time I checked it was pretty common knowledge that big tires and lift kits suck fuel that isn't what I'm interested in, also I know an aftermarket tranny will give you more power to the rear wheels look it up. Usually between 50-75 Hp, I understand that your motor isn't making more power that it's just being sent to the ground more efficiently which would leave me to believe that you would get better mileage also:shaking: So if anybody has any useful comments feel free to post up, if however you feel the need to school me on the best way to make my mileage increase by lowering my truck and putting on little shitty tires,and changing my trans fluid keep your comments to yourself. I know it's a truck that doesn't mean it shouldn't be able to give me decent mileage on the highway.

89breaker when you say built trans are you talking rebuilt stock or aftermarket trans?

I have 2700 dollars in my built allison. It has ~120,000 miles on it since I built it and its never been out of the truck since then. Built motor, twin turbos, big single turbos, big injectors, hundreds of 1/4 mile passes, towing, daily abuse, whatever... its been awesome. I have all stock hard parts in mine, thats why it seems relatively cheap (2700) for everything its held/how long its lasted. I wouldnt trust a ford or dodge trans to hold my hp level on stock hard parts though...

and no, it didnt increase my fuel economy. Anyone who says a built trans increases fuel economy is an artard.

ben

I wish ford would've used an allison trans they are so much nicer than that 4r100 POS,actually if chevy would get off there ass and build a duramax suburban I wouldn't have this problem either.
I talked to a guy on powerstroken.org who claimed that he was gettin 20-22 mpg out of his 7.3 excursion with an ATS trans and some other mods I was just curious if anybody else had this same experience.

I talked to a guy on powerstroken.org who claimed that he was gettin 20-22 mpg out of his 7.3 excursion with an ATS trans and some other mods I was just curious if anybody else had this same experience.

He's lying.

stage4 suncoast here, no mileage differences that i know of.
duramax

I wish ford would've used an allison trans they are so much nicer than that 4r100 POS,actually if chevy would get off there ass and build a duramax suburban I wouldn't have this problem either.


Good luck on getting a diesel suburban. The gov't now tells them what to build. I see the designing of the vehicles getting much worse as they are going to want to try to pay off their gov't and repair their image from receiving a bailout. It's really sad, because people loved the old diesel suburbans.

I wasn't asking for comments from the peanut gallery I want to here from people who have laid out the money and what results they got.

The reasons you are getting comments is because anybody who has owned a truck for more than 12 months has already tried all the MPG gains possible so stop being an ass to people trying to help you.

The last time I checked it was pretty common knowledge that big tires and lift kits suck fuel that isn't what I'm interested in,

So you realize your truck in its current form is about the most inefficient form beacause of the lift and you are worried about the efficiency of your transmission? Yea, that makes sense.

also I know an aftermarket tranny will give you more power to the rear wheels look it up. Usually between 50-75 Hp, I understand that your motor isn't making more power that it's just being sent to the ground more

Your logic sucks.

efficiently which would leave me to believe that you would get better mileage also:shaking: So if anybody has any useful comments feel free to post up, if however you feel the need to school me on the best way to make my mileage increase by lowering my truck and putting on little shitty tires,and changing my trans fluid keep your comments to yourself.

Your attitude sucks too.

I know it's a truck that doesn't mean it shouldn't be able to give me decent mileage on the highway.

Decent mileage? We have already told you that you need to make changes to get the mileage you seek and you get pissy so go look at a brick wall and then at your truck. See anything similar?

89breaker when you say built trans are you talking rebuilt stock or aftermarket trans?

A built trans is aftermarket. A remanufactured trans is rebuilt OEM.

I wish ford would've used an allison trans they are so much nicer than that 4r100 POS,actually if chevy would get off there ass and build a duramax suburban I wouldn't have this problem either.

Seriously? Have you been watching the news lately? You really think they are going to drop money on a diesel or SUV anything when the average American buys cars based on how comfy their ass is and the number of cupholders.

If you want it, build it.

I talked to a guy on powerstroken.org who claimed that he was gettin 20-22 mpg out of his 7.3 excursion with an ATS trans and some other mods I was just curious if anybody else had this same experience.

He might in the flats, at 57 MPH, off cruise control, unloaded. If he regears to a numerically lower gear he can probably get even better and it will tow for shit.


Bottom line: People are here to help you and if you listen more than you talk you might actually learn something.

Built 4r100 behind a moded 7.3.. No mileage increase..worth every nickle in use-ability.. Went from sufficient tow vehicle-- to monster

couple of things there MR.pissy pants

1. if you read it you would know I am buying an excursion not trying to get better mileage from my lifted big tired F250

2.built in my book isn't the same as aftermarket. do you own an ATS tranny or the like or did you pay someone to BUILD your stock tranny BIG difference

3.I'm not sure how the logic of a more efficient tranny putting more power to the ground sucks, that is the definition of efficient is it not to do something using the least amount of power possible so if your old tranny required 100hp to transfer power and the new one requires 60hp than you have an extra 40hp to put down....that is assuming you can do simple math(and you know what they say about assumptions).

4. I didn't ask for help I don't ride the short bus and I understand how wind,and rolling resistance will affect my mileage I asked for OPINIONS FROM PEOPLE WITH AFTERMARKET(not rebuilt ) TRANNSMISIONS.

now that I've spoken my peace thank you to the people who understood how to read a post and reply to what was asked not what they thought they should impart on the lesser folk among us.

I thought his claims of 20 mpg out of a 7.3 with an ATS were a little on the happy side of things and figured there would be people on here who would be running AFTERMARKET TRANNIE'S and have actual first hand accounts of mileage increases not just alot of time on there hands to share drivers ed type "how to get better mileage" tips....if I wanted tips I'd go to the titty bar:flipoff2:

and you didn't answer my question is your tranns a stock unit beefed up or an honest to god not made by the big three aftermarket tranny:beer:

calm down it will all be OK

couple of things there MR.pissy pants

You want to engage in name calling? This isn't the place so tighten your belt a little.

1. if you read it you would know I am buying an excursion not trying to get better mileage from my lifted big tired F250

Yes, I did read it and you used your truck as a comparison so I followed your example.

2.built in my book isn't the same as aftermarket. do you own an ATS tranny or the like or did you pay someone to BUILD your stock tranny BIG difference

Do I have an aftermarket case? No. Do I have a high TQ engine that requires a reinforced case to prevent case deflection? No and anybody who does isn't really worried about MPG.

The guts of my trans are built where they are weak and not just the typical valve body, TC, controller, pan, etc. ATS isn't the only company building transmissions and they actually have shitty customer service and questionable business practices if you want to get specific.

3.I'm not sure how the logic of a more efficient tranny putting more power to the ground sucks, that is the definition of efficient is it not to do something using the least amount of power possible so if your old tranny required 100hp to transfer power and the new one requires 60hp than you have an extra 40hp to put down....that is assuming you can do simple math(and you know what they say about assumptions).

It was your logic that was weak and considering there are all kinds of dumbasses who come on here with faulty knowledge, logic, and backgrounds I do believe it was proper. If somebody knows what they are talking about then they usually sound like it. You however sounded like a typical dumbass believing everything somebody tells you about MPG and basic engineering.

4. I didn't ask for help I don't ride the short bus and I understand how wind,and rolling resistance will affect my mileage I asked for OPINIONS FROM PEOPLE WITH AFTERMARKET(not rebuilt ) TRANNSMISIONS.

Don't get made because we don't know what the hell you are talking about because you are unable to properly communicate your desires.

now that I've spoken my peace thank you to the people who understood how to read a post and reply to what was asked not what they thought they should impart on the lesser folk among us.

I thought his claims of 20 mpg out of a 7.3 with an ATS were a little on the happy side of things and figured there would be people on here who would be running AFTERMARKET TRANNIE'S and have actual first hand accounts of mileage increases not just alot of time on there hands to share drivers ed type "how to get better mileage" tips....if I wanted tips I'd go to the titty bar:flipoff2:

and you didn't answer my question is your tranns a stock unit beefed up or an honest to god not made by the big three aftermarket tranny:beer:

Are you asking me if I paid a company a lot of $$$ to paint my trans. purple and do something any decent diesel shop can do? No. I had my local shop build it. If you want to drink the aftermarket kool-aid, I hear banks makes AWESOME parts and even a monkey can get increased overpriced performance.

calm down it will all be OK

I am calm, You are the one using all CAPS and getting butthurt because you suck at basic written communication.

were exactly in my post did I ask for advice on how to get better mileage by doing things that most anybody on this board knows will boost your mileage. I asked a specific question, and I still fail to see how my logic is weak, a more efficient part will invariably lead to a more efficient product no matter what it is.

I only used ATS because that's what the fellow said I understand that there are others who produce trannsmisions,and maybe in california you can go to the "local shop" and they happen to make all there own tranny internal's but I sir live in the middle of nowhere so not really an option here.I'm not about to drop a pile of cash on a "beefed up" rebuild with a 6month 10k mile waranty, at least not at any of the shops in my neck of the woods.

Look it was a simple question requiring a simple answer not a bunch of uneeded or asked for advice, end of story. I'm sick of people handing out common sense bullshit when it isn't needed, if I would have asked how can I get better mileage out of my power stroke I would have been told to search, like every other person should who asks a question like that on a board where that should be common knowledge,agreed

Haha, this is funny....

Stop saying you "gain" power, that's makes you sound stupid, continue saying that you want to better use the power that your motor has....

If all things in the truck are the same and the new transmissions gear ratios are the same there are only two ways that another transmission could possibly increase MPG from a properly maintained/functioning OEM unit.....those two areas would be friction reduction, which I doubt would produce a calculable result and is usually accomplished with better fluid, and the torque convertor (someone else can correct me if I'm wrong). A tighter convertor or one that locked up at a lower RPM (again correct if I'm wrong) would allow for less power loss to the fluid in the convertor.

With these theories being considered and factual one would then presume that a mere torque convertor and fluid change to the stock tranny would result in the same potential MPG increase that MIGHT be offered by the aftermarket trans. Unless like I said before the trans gear ratios were different.....

And last time I checked, an Excursion looks exactly like an F250, so the comparison was valid, duh :flipoff2:

Oh, and if you've been here long enough, then you should know not to believe anyone's fuel mileage claims unless you think they are realistic, you know everyone inflates their mileage, like I once got 20 on the flat with my V10 dodge, :eyeroll:

were exactly in my post did I ask for advice on how to get better mileage by doing things that most anybody on this board knows will boost your mileage.

Sorry I misunderstood your post. Next time you post a question I will only answer your question and completely disregard anything else you post even if you are dumber than shit and are doing something that will kill you.

Do you want help on your problem or don't you? Yes? Then quit complaining when guys expand their answer to include other areas you can improve that will improve your situation because you sound like a bitch (two can play the name game).

I asked a specific question, and I still fail to see how my logic is weak, a more efficient part will invariably lead to a more efficient product no matter what it is.

Sure, and you could pull your radio antenna, remove your external mirrors, ditch the spare tire and tools, stick a big ass nose and tail cone on, and bondo your seams to get better efficiency. You came on here asking about MPG & transmissions and were told there is no noticeable difference and now you want to freaking argue the details.

I only used ATS because that's what the fellow said I understand that there are others who produce trannsmisions,and maybe in california you can go to the "local shop" and they happen to make all there own tranny internal's but I sir live in the middle of nowhere so not really an option here.

Who said they live in California? Not me. A little bit of research and I am willing to bet you can find a decent shop within 200 miles of you.

I'm not about to drop a pile of cash on a "beefed up" rebuild with a 6month 10k mile waranty, at least not at any of the shops in my neck of the woods.

Just how much efficiency do you hope to gain from the transmission and how long is it going to take to get your 4 or 5 thousand dollar transmission paid for by these gains? I can tell you that unless you are a truck for hire you will never see the payback.

Look it was a simple question requiring a simple answer not a bunch of uneeded or asked for advice, end of story. I'm sick of people handing out common sense bullshit when it isn't needed, if I would have asked how can I get better mileage out of my power stroke I would have been told to search, like every other person should who asks a question like that on a board where that should be common knowledge,agreed

Now you not only continue your bad grammar and spelling you also continue your decline in bitchosity.

If you don't like being called stupid when you are being stupid, go hang out on dieselstop or powerstroke where they all give handjobs for new valve stem caps and recon cab lights.



Oh and by the way. The excursion is based on the F250 chassis and has the same drivetrain.





One more thing.......the excursion's roof pancakes on a rollover.

:laughing:

:bawling:thanks for the f250 based info wow how helpful I had no idea:shaking:

:bawling:thanks for the f250 based info wow how helpful I had no idea:shaking:


If you already knew that then WTF ask?

Do you think that just because they put a roof over the bed and added some carpet that you can just add a high dollar trans. and zip down the road at 30 mpg?


Come on man, fuck.

:laughing:

Fawk, I have been trying to add power by building the motor. I guess I can give up on that and just build a transmission and get tons of HP that way. Who knew?

Where can i buy a 700HP Crate transmission?

back to basics, If you want mileage, Get rid of the big tires. Cant have both, it just doesnt happen.

2.built in my book isn't the same as aftermarket. do you own an ATS tranny or the like or did you pay someone to BUILD your stock tranny BIG difference.

...............

4. I didn't ask for help I don't ride the short bus and I understand how wind,and rolling resistance will affect my mileage I asked for OPINIONS FROM PEOPLE WITH AFTERMARKET(not rebuilt ) TRANNSMISIONS.

LOL, what magic do you think the companies building high performance transmissions have? Do you really think that everything in them is aftermarket?

Its always fun to watch some retard who thinks he is real smart ask a stupid question which illustrates how clueless he is and then have a melt down when his ignorance is pointed out:laughing:

If you already knew that then WTF ask?

I didn't ask?

Do you think that just because they put a roof over the bed and added some carpet that you can just add a high dollar trans. and zip down the road at 30 mpg
quite a stretch from wanting an extra 3-4mpg to 13-14 don't you think I said 20 not 30



Come on man, fuck.

:laughing:

anything else

:stirthepot:

anything else

You are an idiot if you believe people when they say they are getting 20+ mpg out of super heavy excursions.

Keep back pedaling and before you know it, you won't have asked any questions at all in your original post. :D

well I did a little digging online and found 2 articles one from petersons,and one from four wheeler about aftermarket tranny installs with dyno runs before and after petersons claimed almost a 40hp increase and saw 4 mpg,and four wheeler (who also said there tranny was slipping a little) saw almost 60hp and 220 ftlb but didn't give a mileage figure. sooo maybe I'm an asshole or whatever but all I wanted to know from people who put up the cash was what they found. Now with that said I don't understand why everyone thinks 20mpg is so out of reach in an excursion, my old man had an extended cab 6spd with just intake and exhaust that we got 21mpg goin to the beach in,granted it was usually 18.5 or 19 but come on that's damn good in my opinion,are you sayin no one on pirate4x4 has ever seen close to 20 mpg with there excursion(or anything else for that matter) the way you guys go on it's like all trucks get 13mpg and you just have to live with it:rolleyes:

I'm not saying that magazines never embellish there articles, but I don't know to many guys who dyno run there shit every time they put a part on like they do for an article on upgrades.

You are an idiot if you believe people when they say they are getting 20+ mpg out of super heavy excursions.

Keep back pedaling and before you know it, you won't have asked any questions at all in your original post. :D

what did I back pedal on all I want is an answer to a simple question that's it. first hand knowledge from people who have been there done that, is that too much to ask?

Where are people like you when i am trying to sell shit? hell My 92 Z71 gets 35 MPG.:flipoff2:

:mad3:

I realize the 220 ftlb one is a little out there, it was a 800 and something ftlb motor so whatever,but if you can get 40 more hp to the wheels that's gotta give you some increase in mpg. I know my intake and exhaust gave me a solid 1.5 mpg and there's no way I got 40 horse to the rear wheels from it.

just saying:)

I have a friend who just put a built tranny in his stock 04? dodge ram 4x4 with 100k miles on it. he picked up 2-3 mpg....

just saying.

hes also on here....well see if he pipes up.

I have a friend who just put a built tranny in his stock 04? dodge ram 4x4 with 100k miles on it. he picked up 2-3 mpg....

just saying.

hes also on here....well see if he pipes up.

thanks I was pretty sure I wasn't retarded:flipoff2:

I have a friend who just put a built tranny in his stock 04? dodge ram 4x4 with 100k miles on it. he picked up 2-3 mpg....

just saying.

hes also on here....well see if he pipes up.

thanks I was pretty sure I wasn't retarded:flipoff2:

Wait a second, lets not be hasty. Are you willing to spend $5k to pick up 2-3 mpg?

not just for the mileage, but lookin at excursions the newest out there are 5 years old and one with a 7.3 is at least 7. On top of that they're real hard to find with decent mileage and the stock tranny doesn't last forever. I plan on at least 2 more kids so I'm gonna have this thing for quite some time and over 15 years or so 2-3 mpg adds up. I also figure if you buy a tranny that they're willing to waranty for 1000ftlb than it should hold up real nice under normal driving,and 650-700ftlb. I think BD gives you 3year 150k miles that's awful hard to get at hank's house of trannie's.:flipoff2:

I have a friend who just put a built tranny in his stock 04? dodge ram 4x4 with 100k miles on it. he picked up 2-3 mpg....

just saying.

hes also on here....well see if he pipes up.

What's the rest of the story here? Truck modified? Tranny slipping?

In a situation where the tranny has something wrong with it before the replacement then I can easily see where you would get an improvement in mileage and power delivered from a replacement unit, be it built for performance or a stock rebuild.

The simple fact of the matter is that there are going to be no mileage gains made by swapping from one perfectly good transmission to another.

What's the rest of the story here? Truck modified? Tranny slipping?

In a situation where the tranny has something wrong with it before the replacement then I can easily see where you would get an improvement in mileage and power delivered from a replacement unit, be it built for performance or a stock rebuild.

The simple fact of the matter is that there are going to be no mileage gains made by swapping from one perfectly good transmission to another.


Even a better built,more efficient one? I think we all agree the big three don't spend money on the best of everything. I've heard of HP gains from just a torque converter,and after lookin at a shit load of tranny web sites this weekend I could see why. There are a lot of inefficient parts in a stocker. Dodges don't destroy trannies cause they are cool running efficient pieces of technology that dodge throws in there. The allison is probably the best stock one out there and maybe you wouldn't see a big increase from an upgrade there but ford's and dodges just suck.

Even a better built,more efficient one? I think we all agree the big three don't spend money on the best of everything. I've heard of HP gains from just a torque converter,and after lookin at a shit load of tranny web sites this weekend I could see why. There are a lot of inefficient parts in a stocker. Dodges don't destroy trannies cause they are cool running efficient pieces of technology that dodge throws in there. The allison is probably the best stock one out there and maybe you wouldn't see a big increase from an upgrade there but ford's and dodges just suck.


You are confusing efficiency and strength.

A Mack truck is strong and a prius is efficient.

well I did a little digging online and found 2 articles one from petersons,

:lmao:

Even a better built,more efficient one? I think we all agree the big three don't spend money on the best of everything. I've heard of HP gains from just a torque converter,and after lookin at a shit load of tranny web sites this weekend I could see why. There are a lot of inefficient parts in a stocker. Dodges don't destroy trannies cause they are cool running efficient pieces of technology that dodge throws in there. The allison is probably the best stock one out there and maybe you wouldn't see a big increase from an upgrade there but ford's and dodges just suck.

What do you think is more "efficient" about a "better built" tranny?

Don't get me started on torque converters either. You do know where the cores come from that they start with for every aftermarket converter built don't you?

A "better built" tranny, as you put it, simply increases the torque capacity and the durability. It does nothing to actually transmit the power any better than a stocker does. Simply put, if the stock tranny is not slipping then there will be no mpg or torque gains by going with an aftermarket part. Will the truck be more enjoyable to drive? Yes, but that has nothing to do with MPG or power.

HP/torque gains from a converter likely come from a slipping TCC. Considering that the TCC is locked most of the time there will be no MPG or power gains there either, provided that the TCC is in good working order in the first place. For towing, a tighter, more efficient converter will keep trans temps down a bit while the converter is unlocked, but you lose torque multiplication when you go with the typical low stall stators being used. Again, this has little to do with MPG and power though.

I have seen zero gains on any of the trucks I've built or worked on trannys for, other than reliability/longevity at higher than stock torque levels.

:lmao:

I found that amusing too. Let's quote a magazine for the truth. They never are in bed with the parts suppliers are they.

I have never heard of performance transmissions offering more mileage, but I have a Dodge. Maybe the Fords are different?

Either way, I'm not really concerned with mileage. I'm not one of those people that calculates it constantly. I fill the truck, go where I need to go and when the light comes on I fill it again. Whatever it costs it costs.

I have a Goerend 47RE HD with billet input, billet converter and whatever cool stuff they put in it. I don't want to discuss what I spent on it :emb: but if you go to their website they break it all down. I will say that it was worth every penny.

I would say that I didn't see any increase in mileage when I had my tranny "built"... but since it wasn't an aftermarket tranny from a big company then it wouldn't be relevant :shaking:

I would say that I didn't see any increase in mileage when I had my tranny "built"... but since it wasn't an aftermarket tranny from a big company then it wouldn't be relevant :shaking:

The only reason I'm not interested in "built" trannies is because there is no baseline there,no two guys are gonna use exactly the same internals,and just because big bob at big bob's trannies says he used blah blah blah unless you stood and looked over his shoulder how do you know? I figure when you order a tranny from company "a" "b" or "c" there is a certain specification that tranny has to meet before it leaves the shop,when your talking about building thousands of trannies a year compared to a couple or a couple dozen I would think there is gonna be a difference.

How come "better can't also be more efficient? If you turn up a newer diesel motor even a little your easily over 700ftlb so if you install better clutches and a converter that can hold that power better,and less of said power gets turned into heat,and instead is sent to the rear wheels is that not more efficient? Peak power doesn't have to increase to see an increase say 600rpm lower were your driving 80% of the time anyway,so if your getting even 15% more power at a lower RPM your still using less fuel to do the same job. I'm not sayin I'm right and everybody else is wrong it just makes sense to me that's all.

I think you need to do some more research and understand how an automatic transmission works.

I'm done trying to help.

Clutches in the auto tranny work just like clutches in the manual tranny....if they aren't slipping they are locked, and when the torque convertor is locked as well, it is a straight shot, no power lost mechanism within that transmission. Therefore, when a stock automatic tranny is operating properly, it is performing the exact same function as an aftermarket tranny....locked in, no power lost to slippage, mechanical transfer of power.

Now, if you turn your motor up and the stock tranny then slips, you would see an increase in an aftermarket tranny that has clutches that can hold that power without slipping. Heat is irrelevant unless it is causing the tranny to SLIP which would then refer to the IMPROPER function of the stock tranny which would not allow you have a good baseline for comparison.

You didn't cite the articles for any of us to read either.....

See my previous post on the first page for further possible variables in this equation

Some times trucks do pick up millage from a built tranny some dont wether they are slipping or not.A converter that has better fluid cupling b4 lock up will help. Go with the 7.3 and also suncoast for your trans at lease get your converter and parts from them.

The only reason I'm not interested in "built" trannies is because there is no baseline there,no two guys are gonna use exactly the same internals,and just because big bob at big bob's trannies says he used blah blah blah unless you stood and looked over his shoulder how do you know? I figure when you order a tranny from company "a" "b" or "c" there is a certain specification that tranny has to meet before it leaves the shop,when your talking about building thousands of trannies a year compared to a couple or a couple dozen I would think there is gonna be a difference.

You are giving way too much credit to them. Any shop has procedures in place to check repair/build work before it leaves. If it doesn't then their reputation takes a hit and they lose business but this is an in house thing with no external regulation.

Ask any Ford 6.0 owner how many times some dealer said his truck was fixed only to be back in the shop within the year for the same problem.

If you think that a large shop is by default a better shop, then I encourage you to browse through the bad sellers list.

How come "better can't also be more efficient? If you turn up a newer diesel motor even a little your easily over 700ftlb so if you install better clutches and a converter that can hold that power better,and less of said power gets turned into heat,and instead is sent to the rear wheels is that not more efficient?

Heat is a byproduct of the process and gets siphoned off and routed to the cooler which is why anybody who tows with a diesel upgrades their trans cooler.

Efficiency: Doing something with the least amount of waste.

Once the transmission is in 100% lock up and gears are turning, it can't get much more efficient. Sure, you can argue for days about increasing lubrication and reducing parasitic drive train loss but you get dimishing results on your dollar.

How much are you willing to pay for a .25 MPG increase in drivetrain efficiency because that is what you are talking about here.

Peak power doesn't have to increase to see an increase say 600rpm lower were your driving 80% of the time anyway,so if your getting even 15% more power at a lower RPM your still using less fuel to do the same job. I'm not sayin I'm right and everybody else is wrong it just makes sense to me that's all.

That is the problem, you are trying to argue based on your knowledge and we are telling you about reality.

The majority of MPG is determined by the engine and sheer weight of the vehicle. Sure, you can change ring & pinion to put the ENGINE into a more efficient range of its power band but the engine is what is burning the fuel.

There is a ford truck owner who has regeard his truck, added skirting for aero dynamics, shed extra weight, and done all sorts of other shit to basically make his truck worthless and he still only claims 27 mpg and I am willing to bet his average is more like 25/26 on the highway at 55 on the flats completely empty. Again, his truck is worthless and sucks at towing or doing anything it was designed for.

In order to make something more efficient, you have to cut back on mass, and when you are pushing diesel engine power through it, the last thing you want is lighter weight components.

I am not trying to be a dick here and have studied large vehicles & MPG for a looooooong time as I tried to figure it out myself.

All I found for increasing my MPG without reducing the capabilities of the vehicle was regearing the axles to a numerically lower gear (which still impacts towing ability) or getting an aftermarket overdrive unit (which none exists with any sort of 100% reliability or cost reduction that is returned by the MPG savings). I also found a few tuners that promised this but none recommended to be used for towing anything over 8k which is my base load.

I did see a few MPG from a better intake and exhaust but I honestly couldn't tell you how much since I finally gave up on giving a fuck.

You know what I have seen work? I decided to take good care of my truck (service, fluid, filters) and not flog the shit out of it merely because I could.

If you want a diesel vehicle that DOES get kick ass MPG, go buy a VW TDI although I was this >< close to getting one until I compared their reliability and MPG against the Honda ACCORD, realized I was being foolish and bought the accord. :laughing:

Well said !^^^^^^^^^^^^^^

anyone who doesn't think a built trans with an upgraded torque converter will not help in the overall efficiency of your vehicle is a tard. even if the gain is not huge it is there. for example if your torque converter locks up at 40 mph from the factory and you change it to one that locks up at 30 mph you have just greatly improved the efficiency of most of your in town driving, since a greater percentage of the energy your motor makes is now going to the ground. also if you increase the firmness of your shifts your motor will be spending less time needlessly spinning. but it really makes no difference once you are in high gear and at freeway speed since either way the tranny will be locked into gear and the torque converter will be to. but you could reasonably expect better in city mileage. i have looked into this alot since the best i get out of my 2000 superduty is 18 highway and 12 city. but my tranny slips like crazy till i get into third gear (125,000 miles its wore out) but when i get it re-built i definitely expect my city mileage to go up to 14 or 15.

The "information" in this thread has my retardometer pegged.

anyone who doesn't think a built trans with an upgraded torque converter will not help in the overall efficiency of your vehicle is a tard. even if the gain is not huge it is there. for example if your torque converter locks up at 40 mph from the factory and you change it to one that locks up at 30 mph you have just greatly improved the efficiency of most of your in town driving, since a greater percentage of the energy your motor makes is now going to the ground. also if you increase the firmness of your shifts your motor will be spending less time needlessly spinning. but it really makes no difference once you are in high gear and at freeway speed since either way the tranny will be locked into gear and the torque converter will be to. but you could reasonably expect better in city mileage. i have looked into this alot since the best i get out of my 2000 superduty is 18 highway and 12 city. but my tranny slips like crazy till i get into third gear (125,000 miles its wore out) but when i get it re-built i definitely expect my city mileage to go up to 14 or 15.



Me thinks you are wrong and your trans is a POS. :homer:

I also don't think anybody is saying there is absolutely ZERO efficiency to be gained from a transmission.

The larger question is how much and at what cost.

Either way, you won't see it.


BTW: Your grammar, spelling, & syntax makes baby jesus cry.

The "information" in this thread has my retardometer pegged.

Whose information? Mine, somebody else, or the OP?

Whose information? Mine, somebody else, or the OP?

The OP and those piping to support him.

Hmmm... Maybe I'll start a thread talking about how much horsepower I got by swapping my NV4500 for a NV5600!!! Woohoo! It's way more efficient!

Some times trucks do pick up millage from a built tranny some dont wether they are slipping or not.A converter that has better fluid cupling b4 lock up will help.

The MPG return on a converter with good fluid coupling is going to be minimal. I don't know exactly what the shift algorithm is for the 4r100 transmissions is, but I know that I have seen the converter locked as soon as 2nd gear. That would mean that all your efficiency would have to be gained in a very small window, and this would only be an advantage when doing city driving or low speed towing.

That's not to say that a tighter converter with better fluid coupling wouldn't be a good choice for use in a truck that is a tow rig for other reasons though. I do have two general complaints with really tight converters though, one being that it is very easy to drive through the brakes when it is icy, and the other (and most important) is that the torque multiplication goes down. My opinion is that there has to be a compromise between efficiency and usability when the converter is unlocked.


The OP and those piping to support him.

Hmmm... Maybe I'll start a thread talking about how much horsepower I got by swapping my NV4500 for a NV5600!!! Woohoo! It's way more efficient!

LOL, you've got guys here to back you and your claims up! Go for it!

I bet he can get 40 MPG with a simple trans rebuild and dual exhaust. I read somewhere that duals are worth 20% power increase right?

hey its your money, If you wanna dump $3000 to get an extra half a mile to the gallon , go for it.

The OP and those piping to support him.

Hmmm... Maybe I'll start a thread talking about how much horsepower I got by swapping my NV4500 for a NV5600!!! Woohoo! It's way more efficient!

if I could get the wife to drive a stick I wouldn't have this problem I have access to a 6 speed setup out of an 01,however that's not gonna happen.

never would've thought this would raise so many hackles,oh and I don't think just because a shop is bigger it's better,but if all your doing is selling high performance parts and trannies I would hope you have your shit together,better than Ford does anyway,or GM,or Dodge....

I will have a VW diesel as soon as Ma is done with her 2000 beetle....but that motor is goin in my zuki. 5gallon fuel cell with a 200 mile range:D

....but that motor is goin in my zuki. 5gallon fuel cell with a 200 mile range:D

In a trail rig?
can this get any better?

You have Bosh winsheild wippers ........ right ?

In a trail rig?
can this get any better?

You have Bosh winsheild wippers ........ right ?

yes trail rig,gonna put lights on it but not sure how streetable it's gonna end up being

don't understand your wipers comment?:confused:

Can't wait for the "aftermarket" tranny mileage increase thread for that one.

Can't wait for the "aftermarket" tranny mileage increase thread for that one.

:flipoff2:

anyone who doesn't think a built trans with an upgraded torque converter will not help in the overall efficiency of your vehicle is a tard. even if the gain is not huge it is there. for example if your torque converter locks up at 40 mph from the factory and you change it to one that locks up at 30 mph you have just greatly improved the efficiency of most of your in town driving, since a greater percentage of the energy your motor makes is now going to the ground. also if you increase the firmness of your shifts your motor will be spending less time needlessly spinning. but it really makes no difference once you are in high gear and at freeway speed since either way the tranny will be locked into gear and the torque converter will be to. but you could reasonably expect better in city mileage. i have looked into this alot since the best i get out of my 2000 superduty is 18 highway and 12 city. but my tranny slips like crazy till i get into third gear (125,000 miles its wore out) but when i get it re-built i definitely expect my city mileage to go up to 14 or 15.



R

Pretty sure that's what I said in my first post in this thread, thank you for re-iterating it :flipoff2:

And a shift kit and new convertor in the stock tranny will accomplish these things that we've pointed out, no aftermarket tranny necessary.

Sounds like a good show for Mythbusters....To be or not...HMMM

:stirthepot:

http://www.pirate4x4.com/articles/productreviews/ats/tranny

was lookin at the product reviews and saw this article on a ats tranny upgrade,he says in the article that the ats torque converter gives better lockup at lower speed for increased efficiency and mileage. That's not petersons,or four wheeler, that's pirate4x4. Just sayin

The point is, you don't need an aftermarket tranny to accomplish the end goal. Select the parts for the end goal.

Alex.