Duramax 2001 - 2005 Six Speed Conversion

[@jcporosity4764]

This is what I need my lb7. The transmission has been going to limp mode. I'm pushing like 400 plus hp with efl live tuner

[@codyyellott117]

undead_welding porosity you need a built trans

[@2015_Rubicnn]

I think you need to rebuild your Allison and increase it's strength internally. I have a 90hp EFI Live tune on my LLY and my Allison has no issues at all. You can't expect an old tranny to hold a lot of torque while being lead footed....

[@chrismalone4491]

I thought it was fine long as u ain’t dogging it daily that it could hold up to 600hp now that’s what I have been told I bought my dads 05lly gmc sierra and it’s a beast 5postion switch efi live I know it’s pushing a little north or 500 hp with no trans upgrade but like I said I just bought it so I’m looking into getting it done soon

[@RBoysMedia]

@@chrismalone4491 stock trans holds about 500 from all I’ve learned

[@superturboawesome1]

Stock trans definitely can't hold 600. GL ​@@chrismalone4491

[@TheFarmersLife]

Would've been interesting to have this in my 2004.5 LLY. Thought when I got my 2012 Cummins, newer truck, 6 gears, I'd get better mileage. Nope! Worse. Love both trucks though. Cummins has Calibrated Power tunes from these guys with trans tune for about a year now. Works great.

[@racrx7]

regen and the extra emissions crap on the later year model trucks typically lowered mpg, for all makes

[@danielmarkle8823]

Witch one do you like more ? I just bought my first lly. never had a Cummins tho

[@TheFarmersLife]

@@danielmarkle8823 I'd own either, but the Ram has been a great truck. 135,000 miles so far.

[@white24valve]

Can't wait to get this ..guess I need to be calling James!

[@jayceandjeremysadventures.4441]

How would that do pulling a 12k lbs 5th wheel?

[@ronkirkham3410]

H hi, just wanted to say thanks for the video. I wouldn't consider myself a diesel guy I'm more of a big-block gas you know like 8.1 L type of guy but I've had a power stroke I had to elwise back in the day but didn't have them long enough to really start to play with the one thing I didn't notice was it seemed like the power with an edge tuner was not consistent

[@Duramaxtuner]

Thanks for sharing!

[@zackk695]

What has to be done? What is the average cost? These are things we need to know

[@ronkirkham3410]

I have the opportunity to pick up a truck with an LLY very cheap, so whether that motor stays in that particular truck or goes into another one your input is greatly appreciated because before adding power I would like let's say bulletproof it, endured make it more efficient and 100% before anything else

[@Duramaxtuner]

Any questions, give us a call 815-568-7920!

[@davidvicturine1049]

I have an 02 HD Silverado with the 1000 5 speed. At my mechanics request I recently had my TCM replaced, shortly after I began to have trouble with my shift selector light, the square indicator light that shows which gear you have selected. It comes and goes with no regularity upon start up. Sometimes things work better if you start the truck in neutral. Once it does light there is no problem until you restart the truck. I have had a new shift lever installed along with a new key cylinder, new ignition switch, a new internal trans harness. I trust my mechanic but cannot continue with trial and error. I failed to mention that upon installing the new TCM one of the prongs on the harness misaligned, the vehicle was sent to the dealership to be programed and according to my mechanic no flags were raised. The vehicle did not shift properly and they ended up pulling the TCM out and discovered the problem and reinstalled the TCM. I have been told that the wiring harness that fits into the TCM is very sensitive so I am curious if this is a possibilty or could there be no connection to the shift indicator.

[@dustychilds8568]

How reliable has this been? Planning for years of trouble free a good plan?

[@misbehavin454]

Would this work for my 01 with the 8.1l big block and 5 speed Allison

[@Duramaxtuner]

Sorry, we have not dialed it in for the 8.1L yet.

[@mitchellhahn5342]

@@Duramaxtuner I've got an 03 8.1 and would love to take advantage of 6th gear

[@ScottAro83]

#metoo. @Duramaxtuner hook us up!

[@ScottAro83]

@@Duramaxtuner #metoo. Hook us up!

[@alfonsoValle21]

@@Duramaxtuner how about now have you unlocked 6th gears?

[@taylorcappel5035]

Hey I have a 04 lb7 it’s a 5 speed. It’s got a built trans. Would that affect anything if it is already tuned and I put in a new tcm?

[@Duramaxtuner]

It will adjust shift points. It compliments engine tuning more so.

[@BrowerBandit]

i like the 6th gear i get in my ZF6.

[@sebastianturco8534]

Can I use my stock tcm and just reprogram it?

[@Duramaxtuner]

We'd have to reprogram it for you.

[@jck9337]

Duramaxtuner love your vids, wondering if this is possible on an 01 with the 8.1/Allison?

[@mrgmc6314]

I want to know the same thing

[@RBZ06LT6]

I guess so as it has the same transmission

[@justethanol]

I’m pretty sure it works

[@ronkirkham3410]

I am very interested in making this happen, imput is greatly appreciated

[@ArmyProperty]

Any reason you couldn’t add a 7th speed by getting it to engage C2 and C5? So you could run a shorter final drive and narrow the (large) RPM gap between 4th and 5th?

[@Duramaxtuner]

Essentially the 5 speeds had a 6th gear that wasn't enabled. There is no 7th gear. This article has more information: www.motortrend.com/how-to/duramax-tuner-allison-six-speed-conversion/

[@truckguyjoe]

Nick, what external spin on filter do you recommend for the Allison 1000?

[@jhurley12]

truckguyjoe the Allison one.... Always.

[@truckguyjoe]

I drive my local dealership parts department nuts because they insist the WIX brand is better! They tell me I'm over-paying for the Allison brand. Lately I've been ordering them online.

[@TermiteBenny]

Over paying? You can get the Allison filter for around $7 online.

[@mufffarms]

can I put this conversion kit in the transmission and built the transmission

[@curtisashline4910]

Did u find it helps with slip shifting and hanging up in gears? What i was told was typical 5 speed problems? Thanks

[@Duramaxtuner]

Slipping is typically a sign your transmission is going bad. The TCM tuning that comes with the 6-Speed Conversion Kit will help with hanging up in gears!

[@danasimon484]

Just wondering if i could put a valve body and TCM from a 6 speed and put it in my 04 5 speed. looking the cost diff from new to used ?

[@Duramaxtuner]

TCM from a 6-Speed would require a completely new harness as the a40('06-'10) is not the same as the AL5 ('01-'05).

[@davidwostrel]

Question begging to be asked is "Why did GM not opt for the 6th gear?" Does anyone know that information?

[@rapidride2]

Like everything, cost savings.

[@franknvett]

awesome would this work in my 2005 kodiac c4500

[@Parker565]

So I recently dropped my transmission to change the torque converter on my built trans and now the dang thing won't shift into reverse and sometimes will shift into drive but drops out after a few seconds. As far as I can tell seems like the trim solenoid F is Shot, that or the wiring. My trans builder is insisting it's the wiring and said he'd send the parts but I'd pay the labor to have some one else redo my shift solenoids and wiring so I decided to order this conversion instead and a new nsbu switch directly from Allison. I have a fleece tap shifter as well. Hoping I might get a call from you guys on Monday so we can discuss further my setup and needs. Hoping this resolves my range shift issues and as far as trouble codes I get a p0743 and sometimes a p0848. You guys are the gurus and I'm tired of getting treated like an after thought by the people who built my transmission. Hope to hear back from guys, you always are so helpful! Thanks in advance!

[@Duramaxtuner]

Give us a call and one of our techs will get this straightened out for you. 815-568-7920

[@davelosonczy1537]

Ty

[@rapidride2]

Still nothing specific for the 8.1 guys?

[@anthonys1965]

Does this valve body come with an upgraded shift kit such as transgo jr ?

[@codyyellott117]

Will this work with a tap shifter ?

[@Duramaxtuner]

Yes it will.

[@victorelizalde333]

Fleece performance

[@glazedandconfused4756]

I have a 2001 but I want to put the dash from a 2006 in my truck so I can have the manual shift option with the button on the shifter. "Tap shift"

[@MFW1996]

Green Herbivore there’s a kit for that us.bddiesel.com/products/allison-tapshifter-chevy-2001-2002

[@SDBLUERAPTOR]

Duramaxtuner. If a person does this kit and then wants to do a shift kit would they use the 6 speed shift kit or do they still have to pull the trans to do the shift kit?

[@Duramaxtuner]

You won't need a shift kit if you install this kit.

[@markymarkandthefunkybunch6200]

Have a 03 motor home, 8.1 with allison 5 speed. Can this be installed and tuned to allow for better fuel mileage? already have full banks system, when sitting at 65 another gear could be used to mellow it out.

[@sonofthunder.]

will my added tap shifter still function...thanks

[@Duramaxtuner]

Yes it will

[@8228seynel]

Can this be add on to a a motorhome with a 5.9L cummins. Allison 1000 5 speeds? I get 65 right at 2000 rpm. Will be nice to keep speed and drops rpms.

[@DuRussel]

So this is able to be added into a built trans and have the TCM tuned accordingly to the truck build? Unlike the locked suncoast?

[@Duramaxtuner]

Yes it can be added to a built trans. Yes, we can custom tune the TCM tune.

[@DuRussel]

Duramaxtuner awesome! Finally after all these years we have that option! Only thing I disliked about my LB7, having to choose to have tcm tune a 5 speed or do the suncoast 6 speed in a somewhat stock build

[@Bradygoodz]

This is sweet 💯👍🏻

[@luisalvarez5439]

Does this conversion get rid of the limp mode issue???

[@Duramaxtuner]

No, that is generally caused by failing clutches or a failing torque converter. This kit will work with a built transmission. In fact we can build the kit into a built transmission and ship it to you.

[@luisalvarez5439]

@@Duramaxtuner so i can not add this to mt stock tranny??

[@mindblownproductions8761]

Can a Banks Six Gun tuner still be used after the kit is installed?

[@Duramaxtuner]

Yes, no problem

[@bwspyder1]

not sure where lbz guys get off, have you ever seen a lbz get better mpg than a 5 speed lb7? on highway trips with my 03 its common to see 20-22 if i run at 65

[@bwspyder1]

Justin Magness mostly stock. Boost increase valve, cold air intake, set the waste gate to 25psi, 4 inch exhaust and banks 6 gun. Truck has 35s and six inches of lift.

[@wyattlakemper911]

Will this help make the trans last longer than it would without, or just help with mileage and sound?

[@Duramaxtuner]

Trans tuning is going to massively improve drive-ability and shift quality. It will impact sound a little bit since there will be times that TCM tuning reduces operating RPMs. Our theory is that this strategy will help with longevity.

[@wyattlakemper911]

Duramaxtuner oh so this also has tuning in the tcm as well. Great to know looking forward to getting this set up. Thank you got getting back with me so quick

[@tyler1671]

@@Duramaxtuner how well does it work with 750hp rated trans

[@davidgalvan692]

Can i install this kit on a chevy 2005 c4500 medium duty truck.???

[@BBCOutdoors313]

I need that question answered as well. Got an 05 and it def needs the 6 speed

[@Boostedboizh22]

So whats up for the 8.1 gasser guys

[@Duramaxtuner]

@minitruckinaintdead7142 We are currently developing a 5 to 6-Speed conversion kit for Chevy c5500 and c6500s as well as Chevy and GMC kodiak/topkicks.

[@heathbrockway9040]

Would this kit work on the c4500?

[@justethanol]

If that’s an Allison 2000 then no

[@allen4779]

I am 17,770 sub lol 😂 you guys are great 👍🏻

[@upnorthyooper1196]

Price?

[@Duramaxtuner]

$1,875 duramaxtuner.com/vehicle-type/chevy-gm/lb7/6-speed-conversion-kit-1177.html

[@Yippa391]

Any Canadian dealers?

[@Duramaxtuner]

Give us a call, 815-568-7920

[@meme2780]

The $1300 core charge makes this cost over the top, No one including me buys it because of that. I just actually canceled my order for one after they added this charge on after I thought I bought the kit. You can get the cores for under $600 on eBay all day why they shoot themselves in the foot to add that much is why they sell so few of these kits!

[@chadbailey189]

I believe your in for 2500 when all is done

[@harly108023]

I need this on my 7.3 powerstroke probably not possible

[@Duramaxtuner]

Haven't seen that, but hell yeah 7.3 life🤘

[@CombatBuckee]

Tried looking on the site for this but couldnt find it

[@Duramaxtuner]

duramaxtuner.com/transmission/6-speed-conversion-kit-1174.html

[@weslyholmstrom9618]

@@Duramaxtuner why do these hyper links never work?? I have a lilly with the tap BD shifter so I assume without cts then it wont show 6th gear?

[@the_truth21]

Maybe a dumb question but since that 6th gear hasn’t been used will it be seized? Or just like new

[@Duramaxtuner]

Should not be a problem.

[@jeffanderson7256]

Duramaxtuner lol

[@jeffanderson7256]

hozae83 its not realy a 6th gear it just makes it seem like it was another gear

[@caleblevel69]

Its a 6th gear thats there... you need to look into how an automatic transmission works lol

[@jeffanderson7256]

Caleb Cwach you are slow buddy there is not a sixth gear untouched inside the ally lmfao

[@sav300]

So I have read before that a built trans and 6spd conversion don't go together. Is this the case with this set up? I have contemplated 3.42 gears to be able to have a built trans and lower rpms.

[@Ben-et8wh]

exactly what I was going to ask, can this bolt onto a built trans no problem or would it have to be put on with the built trans for proper calibration? how is this working with a built trans?

[@Duramaxtuner]

It works with the built trans, no problem. You may need a custom TCM tune, but that's something you can talk to a sales tech about: 815-568-7920

[@sav300]

Duramaxtuner that is awesome! So glad to hear that!

[@robertchauncey6407]

My concern is mileage on my truck I'm currently at 130.000 on my 05 LLY could install now or should I do after rebuilding transmission.

[@nickl2268]

Hey guys, I've got a built 5 speed in my LLY. Will this conversion work if i've already got a built 5 speed?

[@Duramaxtuner]

Yes, it will.

[@scrash-mb8mf]

Will my BD Tap Shift still work?

[@sav300]

scrash 6775 Yes it will.

[@Zbskater400]

Awesome, how hard the installation process? Looking at the video it looked pretty much straight forward.

[@Duramaxtuner]

Pretty straight forward - replace the valve body and tcm in the engine bay.

[@sonicx1249]

no wiring harness updates just the valve body and tcm?

[@Duramaxtuner]

Correct - no update or change to the wiring harness.

[@Sam-fq3ej]

If I already have EFI Live tuning done and choose to purchase this conversion, would I have to get my EFI Live re-tuned?

[@sav300]

Sam You do not need to have new tunes. The TCM will be tuned accordingly.

[@paulwilson7070]

You will not need to re-tune your ECM for this.

[@dd4147]

@@paulwilson7070 I know this is bumping an old thread but if i already have your ecm and trans tuning with the five speed do i have to have the trans tuning redone? I love the way the truck shifts with your transmission ttuning

[@barrymcockener4336]

I have an 01 would I be able to buy this and install a tap shifter and use it without going to the the dealer to update it? Is this a drop in unit where I wouldn’t have to go the dealer to calibrate the tcm? I also have a PPE stage 5 trans, when you say upgraded valve body would it already be able to support my trans with the higher pressures? Lastly, I do have your tuning (the spade king) with the trans tuning already on my truck would I have to reflash it?

[@Duramaxtuner]

The tap shifter can be installed without going to the dealer. The 6 Speed Conversion kit comes with a pre-tuned TCM.

[@AZdirtdog]

Is this a simple plug and play or does a computer need flashed?

[@Duramaxtuner]

The kit includes everything you need. No need to retune your ECM.

[@MrDoctorchama]

Hi I have an 02 sierra duramax can I put an 06 allison transmission??

[@Duramaxtuner]

No. You need an 01-03 model with this 6 speed conversion kit.

[@jasonrogers143]

You guys do more on 1500 ram ecodiesel please

[@robertelee6712]

One thing he didn't mention is the price. Why don't they ever tell you how much it wil cost? I don't want to waste my time calling. Just tell me the price and I will decide if it is worth buying. Thanks.

[@Duramaxtuner]

Most people go to our website and check the price but I got you: $1575 + $350 Core charge and shipping. If you feel that's worth it, give us a call at 815-568-7920.

[@robertelee6712]

@@Duramaxtuner That sounds good, why the core charge? Also, I pull a 32 ft gooseneck with a backhoe (31, 247 lbs) will affect this conversion? My truck is a single cab 2002 duramax lb7 dually.

[@Duramaxtuner]

@@robertelee6712 Core charge is for the stock TCM, we of course refund that once you send it back. Towing at or near GVW will NOT be a problem. We have done a few of those cab configurations.

[@robertelee6712]

@@Duramaxtuner Makes sense, I will be purchasing one from you soon. Thanks for all the information. Definitely appreciated.

[@ronaldbertin9455]

Never ever did see an approximate cost on in fact any price range

[@kellybikeco]

i wanna convert my Allison 1000 to 6 speed and run it behind a 12v Cummins in my 70 Suburban. can you guys do a TCM that will work with the Cummins?

[@Duramaxtuner]

No. We have worked with guys that run similar setups. The general rule is that you need to have it running and driving before we start tuning.

[@RS-pw7qf]

Can you maybe give estimate cost? On a 04.5 lly?

[@Duramaxtuner]

duramaxtuner.com/vehicle-type/chevy-gm/lly/6-speed-conversion-kit-1177.html $1875 for the kit and generally about 2.5 hours for installation.

[@RS-pw7qf]

@@Duramaxtuner ok I appreciate it thank you.

[@idahooutdoors2695]

My 2004.5 lly has 172,000 miles would it be worth the $2,000+ add on would I benefit I don’t pull much more like an lawn ornament I get 16.6 mph so far had it a few months now no long trips to see if it gets better mpg would it hurt the tranny to drain the fluid never did this yet

[@2015_Rubicnn]

Worth is different for everyone....I think it's worth it if you plan on keeping the truck indefinitely and want to reduce RPM on the HWY, plus have some increased mileage. I believe the valve body also comes equipped with a Transgo Jr shift kit that helps increase line pressure and shifting to help transmission live longer.

[@jacobellis8135]

If I'm thinking correctly, with today's fuel prices (approx $4.75 a gallon) you would need to drive 100,000 in 6th gear to pay for itself. You'd be going from 16.6mpg to 18mpg with a fuel savings of about .02 cents a mile divided by $2000 install = a 100k road trip to break even.

[@parkerhammond3258]

Yay I was the 300th guy to like this vid

[@bigblocklawyer]

I've heard pump is different in 6 speeds than 5 speeds.

[@Duramaxtuner]

The pump isn't the issue, the valve body is. That is why our kit comes with a custom valve body.

[@bigblocklawyer]

@@Duramaxtuner Enh...Kelsey at CA Conversions is pretty adamant about the pump, valve body and internal harness. She sounded like she knew what she was talking about when I talked to her at SEMA. It'll work, just not ideal.

[@gerardog2663]

I would like to buy a 6spd conversion for my 98 Ford Escort, which is currently 5 spd. Do you know if there is availability of the conversion I'm looking for?.

[@BigBlockSeason]

The zf6 is the transmission you would use for that application

[@kadenbrosch6139]

Will ecm tuning need updated as well and does this kit run a higher line pressure?

[@Duramaxtuner]

Line pressure is up - and the engine does not need a retune.

[@ronaldbertin9455]

How much does this conversion cost???

[@Duramaxtuner]

It retails at $1,875, we are currently running a sale where the price is now $1,687.50. Check out the kit here: duramaxtuner.com/featured-products/6-speed-conversion-kit-1177.html Let me know if you have any more questions, thanks!

[@DoRC]

Might have been a good idea to show a truck that didn't drone worse in 6th:)

[@torbjorn.larsson69]

Good news... shod be done 1980... :)

[@andrewmolenkamp6451]

I need 2004 LlY

[@Duramaxtuner]

You can purchase one here: duramaxtuner.com/built-allison-transmissions.html

[@FrancisoDoncona]

How much?

[@Duramaxtuner]

$2,175.00 here's the website: duramaxtuner.com/transmission/6-speed-conversion-kit-1172.html

[@adamsorell4851]

Guy records himself breaking the law lol

[@Silent_Bushes]

Standard 500 hp 😂😂😂👌

[@ronaldbertin9455]

Way too EXPENSIVE

[@terryteel3937]

Will this work with the Banks Sixgun tuner? Have a 2004 LB7.

[@jard1234567]

Does this work with the 8.1l that has the allison 1000?

[@justethanol]

I think so

[@XaviarJS]

Will this conversion work with trucks that have the 8.1L vortec?

[@saab9251]

It should, this just swaps the valve body so that it can engage two sets of clutches to create a 6th gear ratio.

[@TheOneNOnly88]

does this work with the Banks Sixgun tuner?

[@terryteel3937]

I'd like an answer to this question as well.

[@TheOneNOnly88]

@terryteel3937 it does work no issues other then the gear will read p/n for the 6th gear on the idash