Ram 2500 Gear swap 3.42 to 4.30.
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- เผยแพร่เมื่อ 30 ก.ย. 2024
- This is a video of before and after of the truck after re gearing. Notice how better the truck gets up to speed and stays in gear with out down shifting or upshifting like crazy.
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Instagram: okc_6.7
/ 2014
Ram 2500 Mega Cab 6.7 Cummins and 68RFE!!!
6” 4 link BDS lift with dual shock hoop with Fox 2.0 shocks
BDS dual steering stabilizer
Steering brace
22x11 American Force Liberty SS
37/13.5/22 Nitto trail grapplers
Rigid industries 20” light bar
Amp power running boards
ARE hard tonneau cover
Bedrug
Diode Dynamics HID low beams
Diode dynamics LED boards
Clear headlight reflectors
Double R Diesel tuning
5” FLO pro exhaust with Flo Pro Twister
7” Exhasut Tip
Cat Fuel filter relocation kit
Dirty diesel braided fuel line
pro comp rock lights
Fleece fuel filter delete
WCFab S467.7 2nd gen swap
Steed Speed Manifold
WCFab coolant tank
Banks Monster Ram 4” intake horn
Fleece Coolant Bypass kit
Fleece ARP exhaust manifold studs
D&J Precision valve cover
ARP 625 head studs
ISSPRO gauges (fuel pressure & boost)
Auto Meter Steering column gauge mount
Paint correction and ceramic coat
Morimoto Tail Lights
Morimoto Fog Lights
Boost Auto smoked mirror lights
WCFab Coolant Pipe
Nitro 4.30 gears
Banks Differential Cover
On those "shift flares" it's actually the pcm partially unlocking the torque convertor during the shift to cushion the application of the torque from the Cummins. The 68rfe with a 3.42 rear and tall mud tires with a tune will eventually burn the .81 and .62 overdirve clutches out.
When you had the 3:42s what speed would your truck shift into 6th? I have 40s and Mine doesn’t shift into 6th until I got up to 75 mph and even then I’m only turning about 1300 rpm’s was thinking about doing 4:56s. Was also wondering if changing gears helped with fuel milage?
I have a 2017 ram 3500 6.7 Cummins with the 68 transmission, 3.42 gears, 6” lift, 37” tires, in the summer i tow a 10,000 lb trailer through the mountains. I typically don’t drive this vehicle a lot each year and the current mileage is low. Based on your experience what gears would you recommend I install?
Def 4.10 gears at the minimum
yea, i have a 2018 with a leveling kit, 37's on 17" wheels with the 68 tranny (rev max valve body) and 3.42's....i have flare between 4-5th. called a local shop and the guy said i should put 4.56! lol i mean other than the flare it shifts fine, when im wide open it just goes lmao
Would have been nice to see what rpm you were doing 75 mph.
Around 1900 RPM
Don't forget a Turbo Blanket. Yes, they really work.
You would be so much happier with a better tuner. They have pretty much gotten rid of shift flare completely.
Did you have to put the new ratio in the BCM?
Did you run the nitro gear oil also? The truck calls for 75w-90 but nitro recommends 80w-140.
I ran Lucas for the initial install then went with Amsoil 75W-90 after the 500 mile break in.
With 35" what gear ratio do you recommend? I tow but also run interstate at 80. Thanks
if you have 3.42s i would stick with stock. dont see much to gain when moving up to a 4.10
awesome content, keep up the mods. I had ray tune out my ccv sensor but had him add the 225 line pressure and 90hp nozzels at the same time.
Did you have to do any tuning Calibrations after you switched gearing? I’m in the market of switching from 3:42 to either 3:73 or 4:10’s. Which do you recommend? Have the 68RFE along with the WC FAB 2nd gen swap
What size tires are you running? I just did a trans relearn and she shifts a lot better now.
I’m beginning a build on my 14, lift and gear swap is first. What tuning needs to be done to go from a 342 to 430? I’ve purchased many parts and am about to begin just can’t find much information on requirements for gear swap.
I just did a trans re learn once i swapped the gears and everything went well.
@@okc_garage how did you do a trans relearn?
Did you have to change the carrier and program the new gears?!
No the original carrier worked great with the nitro gears.
I like your video. However it doesn't make sense swapping out gears with a 6-speed. The 68rfe has a 30% lower first gear then the 48 rfe. All you have to do is lock out six gear on Highway.
Instead of spending the big dollars on swapping out the gears look for axles from a power wagon with factory lockers. They come 4.46 or 4.10. Then if you sell your original axles you come ahead pretty good financially versus changing the axles. Now what you do when you go to sell the truck if people don't want 37-in tall tires.
I have 2006 Dodge mega cab with power wagon locking axles
I have 37 inch tall tires but 48rfe. I will be installing a 68rfe. So this video show me what my truck would be like. I'll be very happy as I tow a lot of trailers and the lower gears will help get the load moving. Could somebody explain the reasons I may be wrong. Would you get better fuel economy in city driving with lower gears ?
I have 3.42 on my 14 and I can't stand it. Driving through the mountains an around town is the worst, if on the interstate it's great. Always getting stuck behind someone driving slow up hills. Between 3 an 4th gear sucks I either need to be doing 35 or 50mph soon as I hit 38 39 normal driving it shifts into 4th an my rpm is way to low starting out in 4th, an when stuck behind some going slow I can't get around it
Literally just ordered my 4.88s and lockers an hour ago, similar truck but 3500, s364sxe 2nd gen, carli pintop, bunch of other BS, and 38" tires. Pretty excited to have it done
sounds like an awesome build. If I ever build another truck I would love to do a carli pintop suspension and do a similar build to CJCs offroad mega cab.
you think 4.30 is better than 4.10? I'm fixing to do a gear change my rearend is bad now at 160.000 4.32s with 37/12.5 -20 thanks
I really wish you would have went up over 60...didn't really help me....why would you only go up to 59mph? We want to see them AT HIGHWAY SPEED!!!!
I was still doing the break in process during this filming.
I converted over to nitro gear 4.30s and also did a ATS billet valve body with new solenoid pack. I am currently running a ez lynk and did the relearn on the solenoid pack. But I keep throwing a code for gear 5 incorrect ratio P0735. I'll clear it through ez lynk but she will keep popping back up. I've tried new tunes and 225 line pressure. Any help much appreciated.
Sorry man I’ve never encountered that issue.
What was your decision process for 4.30 vs 4.44?
Had a buddy go 4.56 and said it was too much, and i know 4.10s wouldn’t be enough. I just landed right in the middle.
@@okc_garage I'm running 285/55-22's on my Dually and Hot Shot... My transmission guys run 4.56 on their Dually w/ 37's and said it was too much gear... I was on the fence about 4.30 or 4.44
The 285/55-22 is a Nitto Recon and they measure out to a 34/11.5
I have a 2021 Ram 3500 with stock 3.73 gears. I have lifted it and running 40s. Switching to 4.44s. In the shop now get it back in a couple days. TBD on how it's going to drive. I'm hoping I made the right choice over 4.10s
I’m curious on how it drives. Hope you are enjoying the new gears.
Much less Gear hunting, gas or ls chevys really due soooo much better with this gear change you got 6 gears use them.
What are your RPMs at 80 mph? I have a 2010 G56 truck just curious
Tylersa Kelly i haven’t been up to that speed yet still in the break in period. When i get there I’ll let ya know.
@@okc_garage will you let us know finally
What RPM does it rest at at 60 mph????
I need to now 😂!!!!!!!!
I’d say around 15-1700
What is your MPG with the new gears? (Empty)
15 city 18 hwy.
@@okc_garage thanks man.
@@okc_garage what were they before?
Seems like a no brainer to do this gear swap with large tires. I noticed at 60mph you were about 1500rpm in 5th gear, 1100rpm in 6th gear with 3.42s. Now you're about 1400rpm in 6th gear.
Absolutely a no brainer. Yeah it is around 1900-2100 RPM around 75-80 mph. trans quit searching for gears and the constant up shifting and down shifting is minimal now.
Love your truck man. I have a similar setup with the 3.42 gears and 37” tires. Pardon the ignorance but I’m learning. Can you explain the different gear options and purpose of changing it?
The larger the gear the higher the RPM is for the truck at higher speeds. With stock gears 3.42 I would be at like 1200 RPM at 80MPH. Since im at 4.30 gear ratio now my RPMs are up at 1800-2000 RPMs. The truck shifts alot better and isnt constantly up and downshifting at lower speeds. It also takes alot of stress off of the transmission with a higher gear ratio with larger tires. It rides better than stock.
I'm a little late to the party but would like to add a little more information on your reply Erik. The reason for changing the final drive ratio like this also helps to restore the vehicle to manufacturers original drivability goals, such as fuel range, and rpm goal per gear. When you add the taller tire you increase the rotation required of the ring gear to reach speeds thus not allowing your turbo to ignite properly. 4.30 gears with 37" tires equals roughly a 3.42gear ratio
Did you replace front and rear differential gears?
Yes i did both. You have too.
What's it like on the hi way 75 80 mph???
I just put a short video up last week. 80 mph she’s around 18-2000 RPM
any link to the gauge pod on the string wheel thanks
Yeah man. Here ya go. www.xtremediesel.com/auto-meter-15017-dual-gauge-steering-column-pod
@@okc_garage sweet ima grab me one thx so much
Great video, thank you! With some additional miles on the 4.30s, what has the mpg difference been?
My dash says 14.5 MPGs at the moment but i rarely rest it. I’ve been beating on it pretty good the past few times I’ve driven it though since i recently got new tunes. Yesterday i was driving at 75 MPH at 1900 RPM. Hope this helps.
@@okc_garage Really appreciate your response, thank you! I'm going to be 3.73 with 40's from AEV and trying to decide on re-gearing. Thinking 4.30 as well.
@@jaycourant5394 those some big tires you should jump up to some 4.56s. This will put truck close to factory shift point and RPM ranges assuming your truck was stock with 3.73 and around 33 inch tires.
@@sh0cktim3 Thanks so much for your input! I'm thinking the same thing.
so is the mpg better or worse?
Why is your engine light on ?
Who did the job ? I’m thinking of going 4.10 with a leveling kit with 35”tires on a 14 2500
14jrloco i had 4 wheel parts do the install. Awesome customer service and a great price.
Just found this video through duck duck go looking up gear swaps for Dodge Ram 2500.
Considering doing a swap and stay in Newcastle Ok. Wondering where you got yours done at and a ballpark price?
I’m looking to maybe have a few more things like a front selectable locker while they’re in there, so I know it’ll be a lot more lol
Are you in Newcastle as well? I got mine done at 4WP here local to me. I believe i paid around $2400 all said and done. Truck drives amazing.
@@okc_garageYep I’m in Newcastle. Retired to Ok in 2012 from the Navy bought a house Newcastle a couple years ago. Since retiring I don’t leave the house so I basically have no idea of shops in the area lol
@@xTinBenderX send me an email hallen8235@gmail.com. I just retired from the navy last year.
@@okc_garageoutstanding! Sent
I won’t to drive 80 mph under 2 rpm how do I do that 08 duramax
A lot of things to account for. What is your current setup.
EGT’s came down pretty good too.
Night n day difference hah, premo bro
Absolutely. 100% worth it.
You happy with your gears now that you’ve had time with it or would you do something different?
I love them. I honestly wish i would’ve done it sooner. The trans is happier as well. She’s not always searching for gears and shifting all the dang time.
hows Nitro gears holding up since the install?
They are doing great. Zero complaints.
Yo man, found and watched all your past videos. Thanks for your service and congrats on working through your dream build. A couple of years ago I wanted a CTD ram (all my previous rams were 1500s) and found RamBeast Projects here on youtube. He started out the same way you are learning and providing content to a group of people who rarely get actual information from users but usually the "bro" post and replies on forums. Keep us updated on the swap and how things perform. Suggestion: Do shorts or reviews of the components/tuner/turbo that you're running in depth and what works and what challenges you face with them.
I'd like to throw my hat in for the lights. I'm a soon to graduate radiology student with a DRD deleted 2018 CC CTD. I switched careers at 35 to pursue my dreams of caring for people and as such we put life and mods on hold for the past few years. I'm just now getting back into modding the beast and find your videos really informative. Keep at it man.
Chris Kage i really appreciate the kind words. Steve over at beast projects is definitely one of my mentors. I appreciate the ideas on doing reviews of products I’ve had for a while. Sounds like something i may need to do. Once again thanks for the support. I appreciate each and everyone of you.
Did your cruise control stop working once you did your gear swap and what tuner did u go with?
No it worked fine. And i had Ezlynk with CTT tuning.
@@okc_garage yea I need to get mine tuned I was told
What’s up with the CEL?
It was for a sensor on my valve cover. I just needed a tune revision to get rid of it.
Who makes the steering column gauges?
ISSPRO makes the gauges and the mounts are from auto meter.
Hello. Why did you go with 4.30 and not 4.56 and what is the difference between them?
I went with 4.30s because they were specifically made for a Ram with 37s. I couldn’t be happier. They defenitly gave me a lot more lower end power. Didn’t go with the 4.56 cause i was thinking it would have me at to high of an RPM when i was on the highway.
@ErikHallen where did you find the information on 4.30 gears being designed for rams on 37s?
Good job on the video!
Sick vid , I got a 3500 ram Cummins and not sure if I should go 4.30 ratio or 4.56 what do you think ? I am running 38s
Depends on what you use the truck for. 4.30s if you plan on staying with 38s or if you plan on going up to 40s later I’d go 4.56. If you tow a lot i would say 4.30s for sure.
If you're planning on 40s. Id recommend 4.88 for fuel economy including towing.. from 4.56 to 4.88 youll see slight increase in RPMs
Why did you go with nitro? Just curious. What is the difference between brands? I’m pretty sure you’ve done your research more than I have LOL. Also if you don’t mind me asking what was the cost for everything?
jkro90 i went with nitro cause they were the only ones that had a complete kit that made the gear ratio i wanted (4.30). Customer service with nitro gear is top notch. Highly recommend. Paid about $2400 total.
OKC_6.7 OK that makes sense thank you very much for the info have you heard of Yukon?
jkro90 yeah Yukon is a great company with top notch products.
OKC_6.7 OK sounds good! Thank you very much for the info. That is the brand that the shop carries.
Thanks man appreciate it
Was there any tuning required to keep the transmission and speedo happy?
I just did a trans relearn with my MM3 at the time. It also had an option to correct for tire size as well. I use Ezlynk with CTT for tuning now and it has the same features.
@@okc_garage why the tuner switch? I've been wanting to switch mm3 from efi live.
What is the mileage difference??
ericjam2187 so far 1.5 MPG better and that’s with only 75 miles on it.
Great video!
Thanks!
Diesel ?
Yes
Great video man! Congrats on 1K
Thanks man i appreciate it.
What was the mpg difference?
I think i gained 1.5-2 MPGs at most. But the trans was so much happier not constantly searching for gears.
@@okc_garage street or highway?
@@jayr.1523 this is just street.
What is rpm at 80mph?
2000-2200 rpm.
How bad will 3:42 be with 35” tires ? What I’m thinking on soon.
You should be fine man. If you start getting into power mods I’d plan for gears later on down the road.
@@okc_garage well she is Deleted. But done for the positive . Not Ricky Bobby driving .
Jim Cash. You should be alright for bow. If you go bigger on tires I’d recommend for sure. Optimal gears for you would be 3.73 or 4.10s with 35s
@@okc_garage yeah, well think I’m going 34” for now. See how it rolls. 🤞🏽
Is the trans flaring between shifts?
cameron abe i would say yes but it feels a lot better. Only flares maybe 200 rpm at most.
Sounds terrible
You loose power with the new gears. If your talking about purely shifting wize thats one thing but you loose power and pulling ability with a the lower gear set
With my current wheel and tire setup i needed gears bad. She would search all day for years while driving around in town. It took a lot of stress off the trans as well. She’s much happier now.
What the shit are you talking about losing power with deeper gears that's horse shit it's the other way around if you run numerically lower gears say 3.42 vs 4.10 you will have less pulling power .I think you got your shit backwards especially if you've upped your tire size from the factory 31-ish size to 35x12 or larger even with just 35s my truck needs to be run in a gear lower all the time towing the mountains than stock and that's with EFI live tuning even the egt run hotter due to the rpm not being low because while you can run 4th instead of 5th 3rd instead of 4th and so on the rpms still aren't optimal...lol...have you ever actually done a gear swap say in an off-road rig ? You sure don't lose power infact with stock gears in hi range you can't even move on anything but flat ground without a gear swap if you're in hi range .
@@georgec6228 that's what I mean 🤷♂️ what do you want me to say? Sorry your a d- bag? Why so angry. If your saying you go to 3.30 gears from a 3.43 you lose power at the wheels for added speed potential or lower engine rpm on highway
@@Engine_biulds In not the one who thinks you're going to tow more with numerically lower gears on 35s ...go try and pull a 7% grade on 35s with 3.42 then try it on 4.10 . My buddy has 4.10 o have 3..73 both on 35s he walks away from me on Eisenhower pass . You're the one saying stupid shit
@@georgec6228 once again I agree with you, are you on crack buddy?
What are your RPMs at 70?
Chris Maury about 1800
@@okc_garage
I have the same setup. I have a raceme ultra and I'm running 37s. Did you see an increase in mpg?
Chris Maury i haven’t taken it on a road trip to give you a good solid answer man. Sorry.
Why is your CEL on?
Monster RAM when i changed out my valve cover I’m getting a crank case pressure low fault. Just need to buy a different set of tunes.
@@okc_garage Damn, Ray can't turn that off for you for free?
Monster RAM nope he wants $200 for that so I’m looking at CTT tunes.
@@okc_garage Man, I'm sorry to hear that about DRD. Have you talked directly to CTT about getting tunes lately? I have CTT and the last time I talked to them (a few months ago) they weren't selling tunes directly to end users anymore. They told me that to get tunes I had to find a CTT vendor or apply for vendor status which requires a business license. And when I asked where I could find a vendor they never responded back. I ended up contacting Firepunk to get a friend's truck taken care. If CTT doesn't work out for you, maybe give Firepunk a try. But to be completely honest with you, CTT tunes and customer service aren't nearly as good as when Jonathan had the company as Higher Power Performance. I can't even run CTT's 3.0+ tuning on my truck because it drives like garbage. The 3.0 race tune felt like the HPP eco tune. So I'm still running the tunes Jonathan wrote for my truck a few years ago before he sold the company to CTT. Just a fyi if you end up going that direction.
Monster RAM yeah i thought about firepunk at one point but thanks for the reminder. I’ll have to contact them and see what they say.
Ypur target gear shouldn't be 6, thats an OD gear meant for Hwy cruising above 65 mph. I feel that gearing will be terrible for hauling hwy speeds. It will be tached out when hauling a gooseneck etc
VETERANS OVER THE ROAD VOTR I’ve never driven a truck in the city on roads doing about 50 mph that didn’t shift into 6th gear. My RPMs are higher on the highway. Around 1800-2100 RPM.
@@okc_garage I Did my 6.7 Cummins with 5.13 gears and at 65 mph its 1980 rpm and horrible drone noise at 70mph.
b bejarano what size tires are you running? 5.13 is a high gear. Only vehicles i know that run those are jeeps.
@@okc_garage 38x15.50r20 and I also went with Nitro Gears.. Sick Truck by the way!
Sir gearing isn't magic for every 1 inch plus it minus your gearing changes by about 1/10th so if you had the worse factory automatic gear option of 3.42 and went up 5-6 inches in tires you'd be at 2.82-2.92 going to 4.30 and subtracting 5-6 tenths you arrive at 3.70-3.80 so basically gearing the same as factory 3.73 and stock tire ... my truck tows ok on 35s and factory 3.73 which are basically 3.33 now I said ..ok...it towed way better on the factory 265/70/17 I plan to gear swap to 4.30 that puts me at a 3.90 which should help with the added weight and rolling resistance not just the gearing also leaves me room to go 37s...folks who argue the merits of gear swap are just trying to justify not spending the money but Reality is you lose performance towing anything but a skidoo on flat ground.
I have a 2018 pretty much “stock” truck on 35s, and I do a lot of towing highway and local. Curious what rpm does your truck hold around 70 with the new gears? I haul hay for my buddy in fall but majority of the time I’m hauling a 35ft trailer with 2 Jeeps on it, so roughly 15k-17k
It’s around 1500-1700 rpm. At 80 I’m around 2000 rpm.
does five grand sound about right for 4.56 gears and install?
with prices these days that wouldnt suprise me. I believe i paid $1400 for the gears and $2k for install back when i did mine.