I have owned a 2500 4x4, 3:73 with this trans, towed heavy with it and had no problems, traded it at 251k miles running and towing great. Same thing with a 3500 dually 4x4, 4:10 towed heavy and traded it last year with 207k miles, ran and towed like a dream. I purchased both of those trucks new, they were 100% stock. People told me I was overkill on servicing because I changed fuel filter at every oil change. Changed trans filter, flushed trans, changed rear diff, front diff and transfer case lubes every 20k miles (mainly because I towed a lot). But with those miles on each truck, never had any engine, trans or driveline problems. May have been overkill on servicing but may have prevented many problems. My new truck is a 2018 Ram limited with HO 6.7 and Aisin trans, it will remain stock. Personally, I have never found the need to change any of these trucks from stock. They have plenty of HP and torque to tow anything that can legally be towed with them, and they are extremely reliable stock.
Chris M I remember a time when people only towed with their diesel trucks and didn’t care about racing or big hp numbers. Nowadays we have all these coal roller boys wanting to race a truck that weighs over 8,000lbs 🤦🏻♂️
@@bfe671 - I get it but they turn them up expecting the stock trans to hold the HP. I know a guy that had a power stroke with the 6-pack tuner a few years ago. Kept it turned up because it was cool. But then when the engine came apart, all he could take about was that junk Ford. I have a 1970 Chevelle SS 454 dyno 815 hp, I know what will happen if I put a stock turbo 400 behind it
chris...i'm shopping for a new truck, i tow a 13,000 lb 5th and want to do some hotshot work in the future...question: HO/Aisin or standard/ 68RFE setup?? i live at 7,800' elevation and will be traveling coast to coast, north to south. thx for input. (open to input from whomever)
This guy sounds more like a professor than a transmission mechanic. He explains it so well even my slow brain can comprehend it. Thanks so much for the info brother.
Its the 68rfe rap, just needs to rhyme. Seroiusly though, this is the best vid for 4th gen, screw the 68, built 48 is way to go untill aftermarket oversized housings with much bigger clutches come out cheap for 68.
Absolutely the best transmission video I’ve seen. This guy is real, I’ve heard so many younger guys talk trash about the 68RFE and it always comes down to an ass load of hp and big tires topped by no common sense. We have 68RFE’s with close to 200k always towed heavy loads and never been touched (just oil changes according to the OM). When I was in my early 20’s a good older friend told me when I was going to add large tires “ skip the 20’s (age) and just go to your 30’s make mature decisions”. With that said didn’t get the large tires and it has always stuck with me. Like he said awesome transmission for towing. Don’t get me wrong though these high hp rigs are sweet I’m just saying they are designed for the hp given and do work well for that after that don’t bash them because you’ve made alterations past what it was designed for. We run 7 units 6 of them are 3500’s with the 68RFE and 1 4500 with the Aisin, the Aisin went out at 60,000? Not bashing it just saying anything can fail
I have to agree these guys think that any transmission is gona hold up to 150 hp tunes..burnouts or towing 10k on 150 hp tune lol I just shake my head and walk away nothing stock is gona hold all that ..you buy a new truck drive it like it was designed to do..most of the time it will perform as it was designed to not crazy tunes on stock parts
You are the absolute BEST! So glad that you broke it down for the guys that hate the 68RFE. They will literally do 37s or 40s, 6" lift, delete, and tune the truck to within an inch of its life and when the trans pops, they say it is no good. It simply is not designed for that type of torque load from the factory, as you say. And many guys do not re-gear the rear end at all, running 3.42s with 37s.😤 This video should be required viewership for any Ram 6.7/68 buyer that wants to mod.
Had a 2006 Cummins. Absolutely loved the thing. Sold it, like an idiot, and bought a 2012 6.7 Powerstroke, which is a great truck and I practically stole the thing, but it ain’t no Cummins. Been contemplating looking for 2015-16 Powerstroke or a 2012-2018 Cummins, but I was really scared about the transmission, this video eases my mind. Thank you for all awesome information. Gonna look for an un-modded pawpaw truck with stock tires.
I have just found your video and i think it the best video i have ever seen on Ram transmissions i own a 2012 3500 with well over a quarter of a million miles on a standard transmission when it's time for a rebuild i will certainly be knocking on your door 🙂 God bless and stay safe in these difficult times 🙋♂️ 🇬🇧
Spot on Lavon, you hit the ball out of the park on this vid. I have a 2018 Ram 2500, SD gen 2 swap w/EFI, needless to say 2k miles later my 68RFE cooked 5th & 6th gear clutches and I run a 4.10 rear end. Had to have it towed to my Diesel guy for a Revmax 850 and wait a month for Revmax to build one. Wish I had spoke to you to earlier. Live and learn....Hey make a tuning vid with some late model Ram's, just a thought.
This is why I stayed with a 33" tire. Tuned, deleted, daily driven on 33" tires. Never even put the switch into the 5th setting. No need. Plenty of power on setting 3. And if I want a little extra I'll go up to 4th setting. 185k miles, stock trans. Some time this spring I'll be doing a 2nd gen turbo setup just to get rid of the VGT turbo.
I have a 16 Ram 2500 and it has the 66rfe transmission. I have been getting the P0871 code for a few months now, referring to the overdrive solenoid. As long as I keep the RPMs under 2000 when taking off and can get over 30 mph, it does fine. If you hit the throttle too hard, you get the hard shift, and it goes into limp mode and it will shoot the code eventually. When you turn the truck off and restart it, it goes back to operating normally. I have also heard that these transmissions are pretty reliable but the valve bodies and solenoid packs are junk. The solenoid pack has been replaced 4 times under warranty. My fluid looks fine. I ordered a Sonnax valve body today and it will be here Friday. I'm hoping it will solve my problems.
I love how you guys are open, honest and don’t horde information from the average Joe. There is almost limitless trans info on your channel and you help a lot of people! Keep up the good work!
This is probably the most real, honest, and appreciative review of the 68rfe I have listened to. I appreciate that you do not negate brands, but are real in regards to what you have seen and do because of "X" reason. I myself, would like to create reliability and maybe a little power and responsiveness. With that said, I look forward to watching your other vidoes and checking out your company. Thank you again for your very professional and "real" talk about the 68rfe. It was truly a breath of fresh air. It would be interesting to hear your view of the Sonnex clutch and basket versus Revmax's. Another question, are all billet parts pretty much the same between brand "X and Y?" It would be nice to hear a view from a non-proprietor.
Lavon, thank you so much for the amazing clarity when it comes to these 68's. I wish I would've see this video before doing the Allison swap. No major complaints but the 68 did shift a bit smoother. Keep up the good work!
One of the better videos I have watched on You Tube. I picked up a used 2014 2500 6.7l mega cab 4x4 01/2020. I knew the look I was going for but, didn't really have an idea past that. I plan to use it for towing in the future but, for the most part it is used to just go camping and hauling gear in the bed. I did a basic spacer level in the front and put some 22x12 with 37x22x12.5 (regret doing that now). the truck has about 105,000 miles on it and being I live in CA and with all the recent diesel regulations I don't plan on doing any deletes or mods to the motor, maybe Banks intake and exhaust with a pedal controller. However, I have been doing a lot of research and it apparent that to get longevity out of my truck I should look into regearing. I feel the transmission is bound to go out based on the mileage and the way it delays on shifting at times.This video really convinced me that those are the best upgrades I should do. Thanks.
Best 68RFE video I've ever watched! I have a 2018 ram 3500 4 x 4. Sometimes when I stop on the hill and then accelerate, I get a brief slip in the transmission, but only on a hill and not every time! Before I take it to my dealer, I would love to hear your opinion on what it might be as the techs in my area or not too good! Just saying!
I have this trans in my 2018 Ram 2500. At 9k I added an ATS deep trans pan, an ATS trans coolant thermostatic block delete, and an ATS trans case brace. I don’t Over weight tow and I don’t drive like an idiot. I expect it to last a long time.
Excellent video Lavon. I have a 2009 Dodge 2500, 6.7 Cummins with the 68RFE at 200K. The truck is tuned well, stock tire size, and I don't abuse it. Holding my breath on how much longer the trans has before a rebuild is needed.
AISIN is the best towing transmission. IF you are a real man towing BIG trailers, AISIN is your transmission. IF you are a soy boy or soccer mom just get a Honda.
If you want to make 1000HP with 2350 ft lbs of torque..NO the 68RFE is not that transmission..You wouldn't wear flip flops to run a marathon..RIGHT equipment for the right job..GREAT VIDEO
Finally, Thank you for clearing up this info about the 68rfe. I have a 2018 ram and i really love it. No problems at all. I also have a 75 hp tune and it runs beautifully. I’m planning to Purchase a fifth wheel trailer gvwr is 9500 lbs. I hope this will work for me in the future. I’ll keep you informed. This will be a toy hauler but I’m not hauling anything larger than an ATV. Any suggestions you have are welcomed.
Outstanding review with lots of useful information!!! I have a 17 mega, with 37’s and 3:42 gears..I have been debating on the choice of gears I want. Great video.!
I had a 2014 Dodge ram 2500 heavy duty Cummins diesel I’ve always love commons But I have to voice my concern. I went out and bought a standard cab mint Hunter green you could see the truck in the circle to the left with 90,000 miles mint condition $25,000 I thought it was a great deal and it was a great deal. I worked it for 15,000 miles and I mean I worked at hauling around the dump Trailer. Never had a problem except I had to change the water pump because the belt broke which has no problem which is easily fixable. At around 105,000 miles after having it for about a year and a half using it heavy duty and enjoying every minute of it I pulled into a diner to get a cup of coffee when somebody noticed that there was smoke coming From the transmission I am mediately shut it off Let it cool down check the transmission fluid there was transmission fluid in there but when I went to shift into gear a half hour later nothing no forward no reverse. I’ve been down this road before and no problem I had it towed right next-door to a dealer. The dealer I’ve used for years are very good dealer dodge ram. They’ve always been pretty good to me . They knew that the transmission had to be rebuilt but they said they can’t get the parts and that they would have to swap out a reman for $6000 I said no problem go ahead and they gave me five days it will be done sat in the shop For 2 1/2 to 3 weeks. When they finally said they cannot get a transmission for that truck because the demand for transmissions on that truck is so great they said I’m looking at about six months. I decided let me tow the truck out of there I brought it to another dealer and they took the truck as is paid off my loan gave me a check for the overage and I half hour later they sold it to the wholesaler. I love that truck so much unfortunately I could not get a transmission from anyone for that truck no matter what they wanted to charge me. It didn’t matter I was willing to pay the piper. I found out later because of all the ships stuck at the ports getting parts getting transmissions impossible literally. My next-door neighbor is a tow company with a Dodge 5500 flatbed the transmission went and he had a $5000 additional warranty he paid and his flatbed stayed at the dealer for six months and still no transmission. I decided to keep my 99 Dodge ram 2500 Cummins And add a fast FASS lift pump clean up all the grounds redo all the wiring in relation to the injection pump in the lift pump have the VP 44 checked my injection pump experts and today at the 99 Dodge ram 2500 four-wheel-drive Cummins is by far the best truck I’ve ever had As long as you stick with it and keep up on the maintenance I keep logbooks on it the truck has over 170,000 miles. I added a lot of extras on the truck new fan clutch fixed all the seals front and rear did all the fluids new radiator new batteries New manifold exhaust removed all the cracks replace with new parts .I went from 9 miles per gallon to 17 miles After I put in the FASS pump of course I had it done by certified technicians . I miss my 2014 If I ever came across another one again I might be very tempted to buy it I recommend the truck it’s a heavy duty truck it’s a heavy hauler and every dime you put in that truck you’re gonna get a dollar out of it. That’s my story
Another great video of you 👍.now I have a question, I have a ram 2015 3500 6.7, I'm about to tune and delete it, I'm going to stay with my stock rims and tires ,will I need to do something to my 68 trams? If so please let me know what. Thanks in advance 👍
I own a 2018 2500 that chewed up a 68RFE with only light towing, total failure. Warranty gave a replacement, but in the two months Dodge had my truck I bought a 2020 HO with Aisin, honestly the Aisin does not seem to like daily driving. Maybe it's just me, but it feels awkward. The Aisin is my 7th Ram, so I have been around the block a few times. Wish I had my 2nd Gen HO with 6 speed back LOL
Question I own a 04 ram 2500 5" aluminum drive shaft 68rfe. I have run stock size tires for 85 k on the truck changed fluid regular on trans. Am adding up to less than 600 and am running 35" tires I drive highway speeds loaded truck know has 117k trans is fine but I'm planning a rebuild myself likely around 150 175k if it holds that long I was a commercial driver with millions of miles exp. So I owned my own kw over 850 rwhp to much to cool but fun to drive 98 Kenworth.
If you dont tow then I cant see why you would have to downsize your tires. What puts more stress on a transmission a 10% increase in tire diameter or towing 12k lbls ?
Very good info 👌 but can I do a lot of heavy Halling with the 68 RFE . I have a 2003 dodge Cummins 3500 48 RE so is there a kit for the wiring to go 48 to a 68 . I do not like cutting and givbbing the wiring that's not for me .... and you say FIRE 🔥 OR BEING LIFTED ON THE SIDE OF THE ROAD.... NO THANK . Can you let me know what you have or what to do .
Thanks you for a good description of towing with 4 gears in the hills . I not fond of my stock transmission . I had several suggest that I need to buy a up graded unit . But I trying to understand how that will change the design of 750 rpm gear splits . I don't race just pull my trailer . I use the manual shift and lockup and no overdrive in the hill . Just 3 gears . Be nice to have a close ration transmission to tow with for me in my low hp truck .Thanks for you video
Awesome video guys! I work with BG Products out of Wichita Kansas, and we have a heavy duty ATF that we built to cover all basis from incredible Felix wear pin tests, as well as the highest antioxidant properties (pdsc) I’ve got lab testing and third-party testing results. I’d love to send a sample 16 quart cube to try if you guys ever want to. We’re trying to get into the diesel and heavy duty market with this product and so far we’ve had great feedback. Let me know if that something you ever want to try out, in exchange for some feedback (if you havnt tried it yet!)
Ok great video! I’m currently sitting in a Flying J truck center with a P0750 code and a P0740. I’m guessing that the P0740 is just open because the P0750. So with that said... Ram has sent me (within 30 min of my call to them) the solenoid pack and told me that this will fix the problem. So, the problem. I was towing my 44’ Enclosed Gooseneck (126,097 miles) total towing this trailer, when out of nowhere I get a slight jerk and then 4th gear from 70mph. Ok so strange. I press the gear selector back to drive and boom it jumps back to 4th. I pull off where I currently am. Pull the codes and contact Ram. They immediately send me the solenoid pack without asking for payment and with no issue. Fully warranty the part and had it to me so I can swap it out. I’m sitting here still just watching videos on this issue as I wait until morning to actually do the swap. As I mentioned this truck tows this trailer every week from Ohio to Florida with typically 15 HD bikes or sometimes a couple exotics or classics inside. With that said, do you feel that changing the solenoid pack will solve the two codes I’m getting once I’ve completed this swap? Any advice will be greatly appreciated.
Can you revisit this Lavon? Now that a lot more parts have come out. I have a 2012 DRW. S464 turbo 2nd gen swap. Wanting to have a bombproof reliable 450-500hp solely. On 33’s, 3.73’s. Just wanting a sweet tow rig.
Great video! You just described my truck…2011, tuned, lifted , dually on 37s pulling a 15,000 lbs equipment trailer most of the time. I’m not abusing it,but I am using it. I made it to 165k miles on stock transmission before 5th and 6th ratio codes started to show up. What would you recommend for a gearing reduction on this set up?
So can’t wait to rebuild my trans in the future…. Before it gets completely toasted.. have it built to hold 700 HP no matter what I use it for. Maybe 800hp just incase. Sounds like a fun time to replace a lot of the weaker components.
Great video! Question with towing... my 2014 3500 dually is my tow pig for my 40' fifth wheel. Stock power, stock tire size, 3.42 gears... should I avoid towing in 5th and 6th gears then or just lock out 6th be ok?
I have a 2015 stock truck with a 68rfe. What is a safe gear to be in pulling a 15000 pound 5th wheel rv. I'm coming out of a stick truck not use to driving a automatic. Also should i do a thermal bypass on this truck.Thanks for any help.
I have a 2006 Dodge Ram 2500. What clutches do you recommend. I plow and pull my landscape trailers. And what torque converter also. It’s the Hemi engine
I’d like to do a 68 in my 2nd gen 02. There’s not much info on it or maybe it’s not worth it but the power goal is a little over 700hp. Rather than the tall 3rd to 4th jump I thought it’s be nice to have two extra gears with the power. Not drag racer or heavy tower just a practical hot rod it what I want.
Hi thanks for sharing this information. I am considering purchasing a 2008 that has this same transmission. The carfax shows that the previous owner has replaced the entire transmission at a dodge dealer at 136,000 miles. Currently has 151,000 miles, im not into racing etc and curious to know if the 68RFE is a good transmission overall. Hoping im not going to get boned on this purchase. Appreciate you sharing your experience
My turbo wen out on my 12 HO bought a cheetah turbo bolt right on. It’s deleted 5inch exhaust I run it on a towing 40hp tune so far so good. I don’t abuse it at all but I do tow my cattle trailer and horse trailer. 155k miles on it.. do you think I’ll be safe to run for another 100k?
So, if you have the 68rfe as is from factory and you have the total delete and tune to get you to 650-700rwhp and you dont hotrod. But, if you do youshould manually keep it in 3rd or 4th geat and keep it out of 5th & 6th? This should save the trans asn4th is direct drive. And as far as normal daily driving it should last right?
very interesting, 16 3500 srw 68rfe truck here, 99% stock, only thing ive done was went to a 285/75/18 (35x11.2x18) so technically speaking it should be regeared? i do not pull super heavy (heaviest is around 5-6k) but i have noticed in tow haul that my truck still goes into 6th on the interstates above 62-63mph, typically im running 70-72 on the interstates, the truck has no lugging or issues holding 6th going from buffalo to syracuse the whole way... so with that said.... how badly is 6th hating life now??? trans shifts like day one still, and the fluid looks great (already been drained and refilled once at 26k, and currently at 37k) and typically when im pulling its below freezing so i can go snowmobiling, but plans for the truck are a small 3" leveling/lift kit to bring it level and the rear up an inch, keeping the 35's as i dont need the 37's, and maybe a delete down the road, but keep stock power levels as 800ft/lbs does me just fine and im not out to smoke show and be "that guy" as my wallet isnt filled from a magical money source, trans temp is always in the 160-170 range, never seen 180 on the read out, if im going to stay as stock or the plans, how much am i gonna thank myself for doing a gear swap? or with my daily driving and only light towing would the 3.42's still be ok? or is this why the "5th" gen now has 3.73's?
Yes it would be ideal to regear, but if you can absorb that knowledge and just manually select a lower gear to keep rpms at 1800rpm+ when towing heavy in 5th and 6th, then I really don't see you having a premature failure.
Ok, so pretty much how it normally runs for me, when I’ve been around 64-68 it would hunt between 5th and 6th which then I’ll kick it back to 5th and she sounds happy and feels happy, typically I’ve noticed at 71-72 it will sit around 1700-1800 which is where she’s done most of her interstate towing. I’ll keep the regear in mind and the knowledge of this now 👍
Is "shift flare" between 3-4, 4-5, and 5-6 normal for a 2017 Ram with the 68rfe? My truck has only 22,000 miles on it but these 100-200 rpm spikes between gear shifts are driving me nuts. My biggest concern is premature wear on the TC.
So my 2018 2500 4x4 stock at the moment but wanting to see when I can bring the truck up from Nc and have a little work and whatever y’all thing on the transmission and really want a good custom dyno tow tone after some weight reduction and I’m hoping y’all would be able to do all the work in a couple days and be able to drive back home with it but I’ll give y’all a call and go from there
If you're in NC hit up revmax in charlotte. Great stuff and if I remember correctly firepunk actually uses some of their stuff. I'm in NC as well and the revmax work I've had done on my '12 has been great.
I’ve got a 68 rfe tranny. I was pulling my boat up a good hill and as I got down on it in 6th, there was some jumping. I let off the accelerator and it went away. My Mech says I need a new tranny which will cost over $8000. How much would it cost to rebuild with some stouter clutches? It has a easy link 5 stage tuner. I’m not a heavy footed driver…most of the time.
Hey Lavon, I have a 2012 2500 6.7 Ram, fully deleted, 4 inch FloPro turbo back exhaust with a 36 inch muffler, currently just using a Minimaxx that I've had for a few years with just box tunes (they suck, I know lol), have you done a pull on a setup like mine on the dyno? Thing is a runner, I'm kinda curious around what it might be putting to the ground. It is an HO model, stock 360 or 380, 800 torque at the flywheel I guess is how they got those numbers.
my truck makes about 510hp and i'm on 33x12s, it's been holding the power but unless converter is locked it slips pretty bad, how much am i looking to get it built with what you listed off, i tow 14k excavator once a week and daily it but also burnouts are fun🤣
What do you recommend in do. I have a deleted truck with a stock tires and suspension with a 4in with muffler and I want to put efi live in it. Should I run the stock trans or build it. Has the 68rfe.
Great info, a little counter intuitive because my truck is designed (stock) to tow 12k lbs with 33in tires. If I dont tow but I put on 35in tires, how can that be more demanding on the transmission than towing 1/2 a house ? So the question is which is worse, driving around town with 35s or towing 12k lbs across the country with 33s ? The additional torque required to turn a 35in tire is less than 10% the additional torque required to tow 12klbs is huge.
Its about leverage. Not just weight. Bigger tires essentially increase stress back to the trans. Taking mechanical advantage away from the trans. Its ok not everyone will understand it. 35 not so much but 33 to a 37 is huge.
Hi, I have a 2013 RAM 2500 6.7, probably with the 68RFE and 3.42 gears, I added a SMARTY TOUCH using it with +120 hp and has 35x12.5R20 tires, It's OK to re-gear it with 3.73 ?, I'm not planning to go with bigger tires. Thanks.
2019 68RFE with an odd problem. When starting cold, the truck wont shift for about 30-90 seconds. Once I allow it to idle for that long, no problems. Been to the dealer, they thought low on trans fluid, not the problem. Its full of fluid, still does it. Its clearly not building pressure for anywhere from 30 -90 seconds right after a cold start. I'm talking 45 degrees, not minus 100. As far as I can tell with the weird driving shifts anyway, it seems to work quite normally on the street and after idling for a few. Any ideas? It has the dealership stumped.
H L Most of these transmissions have a seal that keeps the fluid from leaking out of the converter when not running. If the seal fails the fluid leaks back into the pan, and when you start up it takes a bit for the converter to fill back up. Which also means it is running dry for that time, so not good.
Figured it out, after the third trip to the dealership, the found an internal filter had broken sending metal or plastic debris throughout the transmission. I ended up trading in the truck to get rid of it before that transmission blew up.
I've had my 2018 deleted, EFI Live mild 75hp tune. I pull my 9000lbs RV very little in the summer. I'm running 35's in the summer and stock winter tires in the winter. I deleted it only because they wanted 4000 bucks for a new scr pipe. My transmission shifted hard once I deleted it, but seems to have settled down now. Runs great. I take it easy on my truck. Any reason for transmission tune or upgrade? I was thinking about changing my shift point because even stock, it seems to always want to be in 5th or 6th at slower speeds. Any input is appreciated.
Turn on your tow/haul button and 5th, 6th will shift later. This will not hurt your transmission life in any way. I can't stand driving around town under 55 mph and it shifts to 5th and 6th all the time. Your truck will also downshift differently with the tow/haul button on and save your brakes some. I run my truck with the tow/haul and the exhaust brake on all the time!
Ok so my 03 still has oe trans and it a 47re should I build the 47 or do a 48 (with fmvb) i want to build the trans before i really add power i am thinking of doing 1000 hp with a few different tunes for sled pulling and drag racing but it will also be a street truck
I have owned a 2500 4x4, 3:73 with this trans, towed heavy with it and had no problems, traded it at 251k miles running and towing great. Same thing with a 3500 dually 4x4, 4:10 towed heavy and traded it last year with 207k miles, ran and towed like a dream. I purchased both of those trucks new, they were 100% stock. People told me I was overkill on servicing because I changed fuel filter at every oil change. Changed trans filter, flushed trans, changed rear diff, front diff and transfer case lubes every 20k miles (mainly because I towed a lot). But with those miles on each truck, never had any engine, trans or driveline problems. May have been overkill on servicing but may have prevented many problems. My new truck is a 2018 Ram limited with HO 6.7 and Aisin trans, it will remain stock. Personally, I have never found the need to change any of these trucks from stock. They have plenty of HP and torque to tow anything that can legally be towed with them, and they are extremely reliable stock.
Chris M I remember a time when people only towed with their diesel trucks and didn’t care about racing or big hp numbers. Nowadays we have all these coal roller boys wanting to race a truck that weighs over 8,000lbs 🤦🏻♂️
@@bfe671 - I get it but they turn them up expecting the stock trans to hold the HP. I know a guy that had a power stroke with the 6-pack tuner a few years ago. Kept it turned up because it was cool. But then when the engine came apart, all he could take about was that junk Ford. I have a 1970 Chevelle SS 454 dyno 815 hp, I know what will happen if I put a stock turbo 400 behind it
Use the special transmission fluid for the AISIN transmission.
chris...i'm shopping for a new truck, i tow a 13,000 lb 5th and want to do some hotshot work in the future...question: HO/Aisin or standard/ 68RFE setup?? i live at 7,800' elevation and will be traveling coast to coast, north to south. thx for input. (open to input from whomever)
@@waterbuddy92
AISIN transmission is used on 5500, 4500, 3500 cab & chassis
This guy sounds more like a professor than a transmission mechanic. He explains it so well even my slow brain can comprehend it. Thanks so much for the info brother.
Get rid of the music
.
..
I’d hate to complain but the music is a bit distracting lol I’d rather listen to lavon talk!
I was hoping that I wasn't the only one...
Then maybe you shouldn't lol
I agree, I could do without the music. I thought he was competing with it.
Its the 68rfe rap, just needs to rhyme. Seroiusly though, this is the best vid for 4th gen, screw the 68, built 48 is way to go untill aftermarket oversized housings with much bigger clutches come out cheap for 68.
I agree
Absolutely the best transmission video I’ve seen. This guy is real, I’ve heard so many younger guys talk trash about the 68RFE and it always comes down to an ass load of hp and big tires topped by no common sense. We have 68RFE’s with close to 200k always towed heavy loads and never been touched (just oil changes according to the OM). When I was in my early 20’s a good older friend told me when I was going to add large tires “ skip the 20’s (age) and just go to your 30’s make mature decisions”. With that said didn’t get the large tires and it has always stuck with me. Like he said awesome transmission for towing. Don’t get me wrong though these high hp rigs are sweet I’m just saying they are designed for the hp given and do work well for that after that don’t bash them because you’ve made alterations past what it was designed for.
We run 7 units 6 of them are 3500’s with the 68RFE and 1 4500 with the Aisin, the Aisin went out at 60,000? Not bashing it just saying anything can fail
I have to agree these guys think that any transmission is gona hold up to 150 hp tunes..burnouts or towing 10k on 150 hp tune lol I just shake my head and walk away nothing stock is gona hold all that ..you buy a new truck drive it like it was designed to do..most of the time it will perform as it was designed to not crazy tunes on stock parts
You are the absolute BEST! So glad that you broke it down for the guys that hate the 68RFE. They will literally do 37s or 40s, 6" lift, delete, and tune the truck to within an inch of its life and when the trans pops, they say it is no good. It simply is not designed for that type of torque load from the factory, as you say. And many guys do not re-gear the rear end at all, running 3.42s with 37s.😤 This video should be required viewership for any Ram 6.7/68 buyer that wants to mod.
Show them this video all you want, I don’t think people can make heads or tails of information anymore….
Great explanation and education on the 68’s
Had a 2006 Cummins. Absolutely loved the thing. Sold it, like an idiot, and bought a 2012 6.7 Powerstroke, which is a great truck and I practically stole the thing, but it ain’t no Cummins. Been contemplating looking for 2015-16 Powerstroke or a 2012-2018 Cummins, but I was really scared about the transmission, this video eases my mind. Thank you for all awesome information. Gonna look for an un-modded pawpaw truck with stock tires.
Great info. Thank you. I gave a 2012 with 3.73 gears and 35 inch tires. Deleted abs tuned. Starting to have issues with overdrive.
Forevermore glad I ran across a deal on the comp3 48re, even if my truck's only at 600hp, currently have 200+ 4x4 launches on it👍
I have just found your video and i think it the best video i have ever seen on Ram transmissions i own a 2012 3500 with well over a quarter of a million miles on a standard transmission when it's time for a rebuild i will certainly be knocking on your door 🙂
God bless and stay safe in these difficult times 🙋♂️ 🇬🇧
Spot on Lavon, you hit the ball out of the park on this vid. I have a 2018 Ram 2500, SD gen 2 swap w/EFI, needless to say 2k miles later my 68RFE cooked 5th & 6th gear clutches and I run a 4.10 rear end. Had to have it towed to my Diesel guy for a Revmax 850 and wait a month for Revmax to build one. Wish I had spoke to you to earlier. Live and learn....Hey make a tuning vid with some late model Ram's, just a thought.
Great video
I just ordered an $80k ram 2500 for basic towing
Worried about transmission life after reading some RUclips comments
Knowledge for days. Just subscribed.
This is why I stayed with a 33" tire. Tuned, deleted, daily driven on 33" tires. Never even put the switch into the 5th setting. No need. Plenty of power on setting 3. And if I want a little extra I'll go up to 4th setting. 185k miles, stock trans. Some time this spring I'll be doing a 2nd gen turbo setup just to get rid of the VGT turbo.
The waiting room music takes away from lavon talking. Great Informative video none the less though! 👍
I have a 16 Ram 2500 and it has the 66rfe transmission. I have been getting the P0871 code for a few months now, referring to the overdrive solenoid. As long as I keep the RPMs under 2000 when taking off and can get over 30 mph, it does fine. If you hit the throttle too hard, you get the hard shift, and it goes into limp mode and it will shoot the code eventually. When you turn the truck off and restart it, it goes back to operating normally. I have also heard that these transmissions are pretty reliable but the valve bodies and solenoid packs are junk. The solenoid pack has been replaced 4 times under warranty. My fluid looks fine. I ordered a Sonnax valve body today and it will be here Friday. I'm hoping it will solve my problems.
I love how you guys are open, honest and don’t horde information from the average Joe. There is almost limitless trans info on your channel and you help a lot of people! Keep up the good work!
This is probably the most real, honest, and appreciative review of the 68rfe I have listened to. I appreciate that you do not negate brands, but are real in regards to what you have seen and do because of "X" reason. I myself, would like to create reliability and maybe a little power and responsiveness. With that said, I look forward to watching your other vidoes and checking out your company. Thank you again for your very professional and "real" talk about the 68rfe. It was truly a breath of fresh air. It would be interesting to hear your view of the Sonnex clutch and basket versus Revmax's. Another question, are all billet parts pretty much the same between brand "X and Y?" It would be nice to hear a view from a non-proprietor.
Interesting video...!
But i still prefer a manual transmission 👍🏻
I prefere a manual but a. Built auto blows it away. If mine wasnt fully built I'd go to a manual
I like them in a mild sports car . Not a truck or a turbocharged engine.
mikestrucks dodge was the last manual trans butt hat was a few years ago none of the big three sell manual transmissions today
iammimic79 yes I Know. It’s a shame...
Lavon, thank you so much for the amazing clarity when it comes to these 68's. I wish I would've see this video before doing the Allison swap. No major complaints but the 68 did shift a bit smoother. Keep up the good work!
One of the better videos I have watched on You Tube. I picked up a used 2014 2500 6.7l mega cab 4x4 01/2020. I knew the look I was going for but, didn't really have an idea past that. I plan to use it for towing in the future but, for the most part it is used to just go camping and hauling gear in the bed. I did a basic spacer level in the front and put some 22x12 with 37x22x12.5 (regret doing that now). the truck has about 105,000 miles on it and being I live in CA and with all the recent diesel regulations I don't plan on doing any deletes or mods to the motor, maybe Banks intake and exhaust with a pedal controller. However, I have been doing a lot of research and it apparent that to get longevity out of my truck I should look into regearing. I feel the transmission is bound to go out based on the mileage and the way it delays on shifting at times.This video really convinced me that those are the best upgrades I should do. Thanks.
Can the "waiting on hold" music.
Great info!
You sir got this channel a subscription for life, very well informed and wonderfully explained.
Best 68RFE video I've ever watched! I have a 2018 ram 3500 4 x 4. Sometimes when I stop on the hill and then accelerate, I get a brief slip in the transmission, but only on a hill and not every time! Before I take it to my dealer, I would love to hear your opinion on what it might be as the techs in my area or not too good! Just saying!
I’d love to hear your thoughts on the Asin 69 series and how they hold up not being able to be tuned.
How this channel ONLY HAS 10k subs kills me. At least we are loyal 😂. Keep up the first class work FPD 💯💯
CUMMMINNSSSRRRRRRRRRRRR
Empty Pockets BIGRRRRRR CUMMINSRRRRRRRRRR
Thanks for a straight forward video instead of saying,”Buy our transmissions, they can take a million miles with a million hp.”
I have a 19 Ram 2500 Cummins deleted running 37’s guess I will be getting the 456 gears….
“ as reliable as the owner is smart”, dammit!
It would be interesting to hear a similar talk in regards to the Aisin.
This is why I subscribe to this channel. Great info!
I have this trans in my 2018 Ram 2500. At 9k I added an ATS deep trans pan, an ATS trans coolant thermostatic block delete, and an ATS trans case brace. I don’t Over weight tow and I don’t drive like an idiot. I expect it to last a long time.
Excellent video Lavon. I have a 2009 Dodge 2500, 6.7 Cummins with the 68RFE at 200K. The truck is tuned well, stock tire size, and I don't abuse it. Holding my breath on how much longer the trans has before a rebuild is needed.
Do an AS69rc walk through next! I can't tell you how many people ask about this in the Ram forums. Great Video!
This!
Yes plz do
I was going to ask the same question.
AISIN is the best towing transmission. IF you are a real man towing BIG trailers, AISIN is your transmission.
IF you are a soy boy or soccer mom just get a Honda.
Im thinkin the true "soy crusher" is rattlin the elbow through the gears..
Put that in your hello Kitty hat
If you want to make 1000HP with 2350 ft lbs of torque..NO the 68RFE is not that transmission..You wouldn't wear flip flops to run a marathon..RIGHT equipment for the right job..GREAT VIDEO
Finally,
Thank you for clearing up this info about the 68rfe. I have a 2018 ram and i really love it. No problems at all. I also have a 75 hp tune and it runs beautifully. I’m planning to Purchase a fifth wheel trailer gvwr is 9500 lbs. I hope this will work for me in the future. I’ll keep you informed. This will be a toy hauler but I’m not hauling anything larger than an ATV. Any suggestions you have are welcomed.
Outstanding review with lots of useful information!!! I have a 17 mega, with 37’s and 3:42 gears..I have been debating on the choice of gears I want. Great video.!
12:00 "it's going to be as reliable as the guy is smart." Wise words Lavon, wise words... 🙂
I had a 2014 Dodge ram 2500 heavy duty Cummins diesel I’ve always love commons But I have to voice my concern. I went out and bought a standard cab mint Hunter green you could see the truck in the circle to the left with 90,000 miles mint condition $25,000 I thought it was a great deal and it was a great deal. I worked it for 15,000 miles and I mean I worked at hauling around the dump Trailer. Never had a problem except I had to change the water pump because the belt broke which has no problem which is easily fixable. At around 105,000 miles after having it for about a year and a half using it heavy duty and enjoying every minute of it I pulled into a diner to get a cup of coffee when somebody noticed that there was smoke coming From the transmission I am mediately shut it off Let it cool down check the transmission fluid there was transmission fluid in there but when I went to shift into gear a half hour later nothing no forward no reverse. I’ve been down this road before and no problem I had it towed right next-door to a dealer. The dealer I’ve used for years are very good dealer dodge ram. They’ve always been pretty good to me . They knew that the transmission had to be rebuilt but they said they can’t get the parts and that they would have to swap out a reman for $6000 I said no problem go ahead and they gave me five days it will be done sat in the shop For 2 1/2 to 3 weeks. When they finally said they cannot get a transmission for that truck because the demand for transmissions on that truck is so great they said I’m looking at about six months. I decided let me tow the truck out of there I brought it to another dealer and they took the truck as is paid off my loan gave me a check for the overage and I half hour later they sold it to the wholesaler. I love that truck so much unfortunately I could not get a transmission from anyone for that truck no matter what they wanted to charge me. It didn’t matter I was willing to pay the piper. I found out later because of all the ships stuck at the ports getting parts getting transmissions impossible literally. My next-door neighbor is a tow company with a Dodge 5500 flatbed the transmission went and he had a $5000 additional warranty he paid and his flatbed stayed at the dealer for six months and still no transmission. I decided to keep my 99 Dodge ram 2500 Cummins And add a fast FASS lift pump clean up all the grounds redo all the wiring in relation to the injection pump in the lift pump have the VP 44 checked my injection pump experts and today at the 99 Dodge ram 2500 four-wheel-drive Cummins is by far the best truck I’ve ever had
As long as you stick with it and keep up on the maintenance I keep logbooks on it the truck has over 170,000 miles. I added a lot of extras on the truck new fan clutch fixed all the seals front and rear did all the fluids new radiator new batteries New manifold exhaust removed all the cracks replace with new parts .I went from 9 miles per gallon to 17 miles After I put in the FASS pump of course I had it done by certified technicians . I miss my 2014 If I ever came across another one again I might be very tempted to buy it I recommend the truck it’s a heavy duty truck it’s a heavy hauler and every dime you put in that truck you’re gonna get a dollar out of it. That’s my story
Good information. Informative, non-biased, honest. Nice job!
With over 35K views you should have near that may Likes, Thanks for the GR8 info you the man.
Great info thanks for taking the time to explain.
Another great video of you 👍.now I have a question, I have a ram 2015 3500 6.7, I'm about to tune and delete it, I'm going to stay with my stock rims and tires ,will I need to do something to my 68 trams? If so please let me know what. Thanks in advance 👍
Lots of knowledge there... great work!
Ha ha now the transmission is angry with life ... 🙈😂😂😂😂😂
I have both, 48re in my 05 and 68 in my 08. I was ready to pull the 48 out and put it in the 08. Glad you stopped me.
this is the best INOF of a comparison. I love both transmissions wish they could just combined the 2
Very good informative video good job 👍👍
Excellent video with a lot of great info !!!
I own a 2018 2500 that chewed up a 68RFE with only light towing, total failure. Warranty gave a replacement, but in the two months Dodge had my truck I bought a 2020 HO with Aisin, honestly the Aisin does not seem to like daily driving. Maybe it's just me, but it feels awkward. The Aisin is my 7th Ram, so I have been around the block a few times. Wish I had my 2nd Gen HO with 6 speed back LOL
great vid... teaching the viewers about the differences and when and when not to upgrade. Thanks.
Question I own a 04 ram 2500 5" aluminum drive shaft 68rfe. I have run stock size tires for 85 k on the truck changed fluid regular on trans. Am adding up to less than 600 and am running 35" tires I drive highway speeds loaded truck know has 117k trans is fine but I'm planning a rebuild myself likely around 150 175k if it holds that long I was a commercial driver with millions of miles exp. So I owned my own kw over 850 rwhp to much to cool but fun to drive 98 Kenworth.
Great information lavon I need to downsize my tires for sure
If you dont tow then I cant see why you would have to downsize your tires. What puts more stress on a transmission a 10% increase in tire diameter or towing 12k lbls ?
Very good info 👌 but can I do a lot of heavy Halling with the 68 RFE . I have a 2003 dodge Cummins 3500 48 RE so is there a kit for the wiring to go 48 to a 68 . I do not like cutting and givbbing the wiring that's not for me .... and you say FIRE 🔥 OR BEING LIFTED ON THE SIDE OF THE ROAD.... NO THANK . Can you let me know what you have or what to do .
Thanks you for a good description of towing with 4 gears in the hills . I not fond of my stock transmission . I had several suggest that I need to buy a up graded unit . But I trying to understand how that will change the design of 750 rpm gear splits . I don't race just pull my trailer . I use the manual shift and lockup and no overdrive in the hill . Just 3 gears . Be nice to have a close ration transmission to tow with for me in my low hp truck .Thanks for you video
Please do a similar video on the Aisin
Awesome video guys! I work with BG Products out of Wichita Kansas, and we have a heavy duty ATF that we built to cover all basis from incredible Felix wear pin tests, as well as the highest antioxidant properties (pdsc)
I’ve got lab testing and third-party testing results. I’d love to send a sample 16 quart cube to try if you guys ever want to. We’re trying to get into the diesel and heavy duty market with this product and so far we’ve had great feedback. Let me know if that something you ever want to try out, in exchange for some feedback (if you havnt tried it yet!)
Ok great video! I’m currently sitting in a Flying J truck center with a P0750 code and a P0740. I’m guessing that the P0740 is just open because the P0750. So with that said... Ram has sent me (within 30 min of my call to them) the solenoid pack and told me that this will fix the problem. So, the problem. I was towing my 44’ Enclosed Gooseneck (126,097 miles) total towing this trailer, when out of nowhere I get a slight jerk and then 4th gear from 70mph. Ok so strange. I press the gear selector back to drive and boom it jumps back to 4th. I pull off where I currently am. Pull the codes and contact Ram. They immediately send me the solenoid pack without asking for payment and with no issue. Fully warranty the part and had it to me so I can swap it out. I’m sitting here still just watching videos on this issue as I wait until morning to actually do the swap. As I mentioned this truck tows this trailer every week from Ohio to Florida with typically 15 HD bikes or sometimes a couple exotics or classics inside. With that said, do you feel that changing the solenoid pack will solve the two codes I’m getting once I’ve completed this swap? Any advice will be greatly appreciated.
I have a 2014 2500 with the Cummins and 68rfe all stock. I use it for comercial use towing RV's is it ok or should I plan for upgrades?
Amazing video & info !
Very informative thanks levon!!!
I can't wait for y'all to pull off a weird science project 👍🏻👍🏻🇺🇸🇺🇸🙌🏻🙌🏻😆😆
So wat does that 68RFE rebuild cost?
transmission will be perfect for my truck because I do a lot of Hot shot with a 7.3
Can you revisit this Lavon? Now that a lot more parts have come out. I have a 2012 DRW. S464 turbo 2nd gen swap. Wanting to have a bombproof reliable 450-500hp solely. On 33’s, 3.73’s. Just wanting a sweet tow rig.
Great video! You just described my truck…2011, tuned, lifted , dually on 37s pulling a 15,000 lbs equipment trailer most of the time. I’m not abusing it,but I am using it. I made it to 165k miles on stock transmission before 5th and 6th ratio codes started to show up. What would you recommend for a gearing reduction on this set up?
4.88s for that setup
So can’t wait to rebuild my trans in the future…. Before it gets completely toasted.. have it built to hold 700 HP no matter what I use it for. Maybe 800hp just incase. Sounds like a fun time to replace a lot of the weaker components.
Great video! Question with towing... my 2014 3500 dually is my tow pig for my 40' fifth wheel. Stock power, stock tire size, 3.42 gears... should I avoid towing in 5th and 6th gears then or just lock out 6th be ok?
It’s a stock truck; just drive the darn thing.
If you have the HO, it's an Aisin tranny, much tougher unit.
I have a 2015 stock truck with a 68rfe. What is a safe gear to be in pulling a 15000 pound 5th wheel rv. I'm coming out of a stick truck not use to driving a automatic. Also should i do a thermal bypass on this truck.Thanks for any help.
I have a 2006 Dodge Ram 2500. What clutches do you recommend. I plow and pull my landscape trailers. And what torque converter also. It’s the Hemi engine
Great video bro!! I’ll be coming to see you soon!
I'm thinking about doing a Allison conversation as it's a more heavy duty transmission. Thoughts on that?
I’d like to do a 68 in my 2nd gen 02. There’s not much info on it or maybe it’s not worth it but the power goal is a little over 700hp. Rather than the tall 3rd to 4th jump I thought it’s be nice to have two extra gears with the power. Not drag racer or heavy tower just a practical hot rod it what I want.
That 6 speed auto sounds pretty cool. I don't like to hop up my trucks though.
What is the consensus on the Sonnax plug in line pressure booster? Wondering if it's snake oil or something worth looking at.
Hi thanks for sharing this information. I am considering purchasing a 2008 that has this same transmission. The carfax shows that the previous owner has replaced the entire transmission at a dodge dealer at 136,000 miles. Currently has 151,000 miles, im not into racing etc and curious to know if the 68RFE is a good transmission overall. Hoping im not going to get boned on this purchase. Appreciate you sharing your experience
My turbo wen out on my 12 HO bought a cheetah turbo bolt right on.
It’s deleted 5inch exhaust I run it on a towing 40hp tune so far so good. I don’t abuse it at all but I do tow my cattle trailer and horse trailer. 155k miles on it.. do you think I’ll be safe to run for another 100k?
Do you like the 68re or aisin better on a stock truck?
So, if you have the 68rfe as is from factory and you have the total delete and tune to get you to 650-700rwhp and you dont hotrod. But, if you do youshould manually keep it in 3rd or 4th geat and keep it out of 5th & 6th? This should save the trans asn4th is direct drive. And as far as normal daily driving it should last right?
very interesting, 16 3500 srw 68rfe truck here, 99% stock, only thing ive done was went to a 285/75/18 (35x11.2x18) so technically speaking it should be regeared? i do not pull super heavy (heaviest is around 5-6k) but i have noticed in tow haul that my truck still goes into 6th on the interstates above 62-63mph, typically im running 70-72 on the interstates, the truck has no lugging or issues holding 6th going from buffalo to syracuse the whole way... so with that said.... how badly is 6th hating life now??? trans shifts like day one still, and the fluid looks great (already been drained and refilled once at 26k, and currently at 37k) and typically when im pulling its below freezing so i can go snowmobiling, but plans for the truck are a small 3" leveling/lift kit to bring it level and the rear up an inch, keeping the 35's as i dont need the 37's, and maybe a delete down the road, but keep stock power levels as 800ft/lbs does me just fine and im not out to smoke show and be "that guy" as my wallet isnt filled from a magical money source, trans temp is always in the 160-170 range, never seen 180 on the read out, if im going to stay as stock or the plans, how much am i gonna thank myself for doing a gear swap? or with my daily driving and only light towing would the 3.42's still be ok? or is this why the "5th" gen now has 3.73's?
Yes it would be ideal to regear, but if you can absorb that knowledge and just manually select a lower gear to keep rpms at 1800rpm+ when towing heavy in 5th and 6th, then I really don't see you having a premature failure.
Ok, so pretty much how it normally runs for me, when I’ve been around 64-68 it would hunt between 5th and 6th which then I’ll kick it back to 5th and she sounds happy and feels happy, typically I’ve noticed at 71-72 it will sit around 1700-1800 which is where she’s done most of her interstate towing. I’ll keep the regear in mind and the knowledge of this now 👍
Is "shift flare" between 3-4, 4-5, and 5-6 normal for a 2017 Ram with the 68rfe? My truck has only 22,000 miles on it but these 100-200 rpm spikes between gear shifts are driving me nuts. My biggest concern is premature wear on the TC.
I have a 2016 tuned with efi live csp4. I've noticed the exact same flares you mention, even after trans tuning it is still there but not as bad...
So my 2018 2500 4x4 stock at the moment but wanting to see when I can bring the truck up from Nc and have a little work and whatever y’all thing on the transmission and really want a good custom dyno tow tone after some weight reduction and I’m hoping y’all would be able to do all the work in a couple days and be able to drive back home with it but I’ll give y’all a call and go from there
If you're in NC hit up revmax in charlotte. Great stuff and if I remember correctly firepunk actually uses some of their stuff. I'm in NC as well and the revmax work I've had done on my '12 has been great.
I’ve got a 68 rfe tranny. I was pulling my boat up a good hill and as I got down on it in 6th, there was some jumping. I let off the accelerator and it went away. My Mech says I need a new tranny which will cost over $8000. How much would it cost to rebuild with some stouter clutches? It has a easy link 5 stage tuner. I’m not a heavy footed driver…most of the time.
Need quick help. Just test drove a 2011 2500 Laramie. Trans shifted pretty hard and it sounded like it was squealing before a shift.
Hey Lavon, I have a 2012 2500 6.7 Ram, fully deleted, 4 inch FloPro turbo back exhaust with a 36 inch muffler, currently just using a Minimaxx that I've had for a few years with just box tunes (they suck, I know lol), have you done a pull on a setup like mine on the dyno? Thing is a runner, I'm kinda curious around what it might be putting to the ground. It is an HO model, stock 360 or 380, 800 torque at the flywheel I guess is how they got those numbers.
my truck makes about 510hp and i'm on 33x12s, it's been holding the power but unless converter is locked it slips pretty bad, how much am i looking to get it built with what you listed off, i tow 14k excavator once a week and daily it but also burnouts are fun🤣
Would love an update video now that some time has passed. I’m going to need a 68 for a truck on 37’s and 600-650hp max.
What do you recommend in do. I have a deleted truck with a stock tires and suspension with a 4in with muffler and I want to put efi live in it. Should I run the stock trans or build it. Has the 68rfe.
Great info, a little counter intuitive because my truck is designed (stock) to tow 12k lbs with 33in tires. If I dont tow but I put on 35in tires, how can that be more demanding on the transmission than towing 1/2 a house ? So the question is which is worse, driving around town with 35s or towing 12k lbs across the country with 33s ? The additional torque required to turn a 35in tire is less than 10% the additional torque required to tow 12klbs is huge.
Its about leverage. Not just weight. Bigger tires essentially increase stress back to the trans. Taking mechanical advantage away from the trans. Its ok not everyone will understand it. 35 not so much but 33 to a 37 is huge.
Hi, I have a 2013 RAM 2500 6.7, probably with the 68RFE and 3.42 gears, I added a SMARTY TOUCH using it with +120 hp and has 35x12.5R20 tires, It's OK to re-gear it with 3.73 ?, I'm not planning to go with bigger tires.
Thanks.
2019 68RFE with an odd problem. When starting cold, the truck wont shift for about 30-90 seconds. Once I allow it to idle for that long, no problems. Been to the dealer, they thought low on trans fluid, not the problem. Its full of fluid, still does it. Its clearly not building pressure for anywhere from 30 -90 seconds right after a cold start. I'm talking 45 degrees, not minus 100. As far as I can tell with the weird driving shifts anyway, it seems to work quite normally on the street and after idling for a few. Any ideas? It has the dealership stumped.
H L Most of these transmissions have a seal that keeps the fluid from leaking out of the converter when not running. If the seal fails the fluid leaks back into the pan, and when you start up it takes a bit for the converter to fill back up. Which also means it is running dry for that time, so not good.
Figured it out, after the third trip to the dealership, the found an internal filter had broken sending metal or plastic debris throughout the transmission. I ended up trading in the truck to get rid of it before that transmission blew up.
great info and video 👍
I've had my 2018 deleted, EFI Live mild 75hp tune. I pull my 9000lbs RV very little in the summer. I'm running 35's in the summer and stock winter tires in the winter. I deleted it only because they wanted 4000 bucks for a new scr pipe. My transmission shifted hard once I deleted it, but seems to have settled down now. Runs great. I take it easy on my truck. Any reason for transmission tune or upgrade? I was thinking about changing my shift point because even stock, it seems to always want to be in 5th or 6th at slower speeds. Any input is appreciated.
Turn on your tow/haul button and 5th, 6th will shift later. This will not hurt your transmission life in any way. I can't stand driving around town under 55 mph and it shifts to 5th and 6th all the time. Your truck will also downshift differently with the tow/haul button on and save your brakes some. I run my truck with the tow/haul and the exhaust brake on all the time!
I have a 2013 Laramie 2500 it not shifting to 5 and 6 it threw a check code replace the auto transmission module solenoid I did and nothing changed
Maybe kids should buy a Mustang for speed and use the truck to tow it there. But live on hot rodders
I'm just curious would the 68 RFE transmission would be palatable with the 5.7 hemi?
Do I need to worry about transmission if I’m just lifted with 37s and not tuned?? It’s just a daily driver, no towing
When are you going to do a video on the Aisin transmissions?
Ok so my 03 still has oe trans and it a 47re should I build the 47 or do a 48 (with fmvb) i want to build the trans before i really add power i am thinking of doing 1000 hp with a few different tunes for sled pulling and drag racing but it will also be a street truck
Do I need to change my gears for 33s on 20 in wheels