Diesel Insights: Stock Vs. 64 Vs. 67 Turbo 

Ford tech here, just wanted to mention that this is a great video! Nice to see some accurate information laid out smooth and efficiently. I'll be pointing customers here when the get that HP/ TQ itch to help understand what works and why. Thanks for taking the time, I'm subscribed. From a Ford guy!

Nice video. To many guys are buying big turbos not realizing the sacrifices that come with it. I years ago, was one of those guys. Great info!

This literally answered every question I had about upgrading my turbocharger. Great video 👍🏼

You are one of the few shops that take the time to explain the theory in turbo performance that bigger isn’t always better for Diesel engines and matching the right parts for its intended use... It reminds me of the old days with people hot roding gas engines and always wanting a big camshaft because it sounded cool with the “lopey Idle” but would give up a ton of drivability and performance when matching the wrong camshaft to the rest of the engine and application use! Great video!

Very informative! I’ve been wondering which turbo to upgrade to with my LBZ and you’ve answered my questions! 🙏🏻

Great video! I feel relieved I kept my valley charger stock and added a precision 67mm on my f250.

Thanks for the video. I had a basic understanding of turbos. Now, I have much better understanding.

This was great advice. Thank you for putting it in real world examples.

Compressor wheel and turbine wheel design are huge not just size. Wheel profile , extended tip , slim hub , then the pressure your looking to make will dictate how many blades youll have 11+0 5+5 6+6 and AR and wastegate size to combat back pressure. There so much more to consider .

Great educational video. Thanks!

Great video. I was thinking of going with the 67 on my lml but I think I’ll be changing that to a 64 Or compound.

The best no bullshit heads up video/section there is

Great video. Thanks for sharing.

Good info Nick 👍

Could you do a video on sizing compounds turbos for different applications?

Great video

Great vid thx

Great videos and thank you! Took the air horn off my new to me '07 5.9 to change the oil filter and realized the turbine on the stock turbo is really chewed up. Looks like something made its way through there, and I cant believe it didn't grenade. So based on your recommendations it sounds like going back with a stock turbo might be best for a stock engine, daily driver, occasional RV towing, and no smoke wanting truck...? Thanks for any insight and I need to give you guys a call.

Could you guys do a sound comparison of the 64 and the 67 vs the stock sound?

What's your take on 11balde compressor wheels vs others?

Hey! I have an LLY with EFI live, 45% over injectors and CP3 pump from Lincoln diesel. Welded y-bridge and a lift pump with the stock turbo. The best way I can describe the sound it is making would be, it sounds like a really bad spark knock (ping) When I first had the injectors and CP3 pump done, I just figured that was the way bigger injectors sound. But sometimes it just sounds really bad. My balance rates are all within range. I even took it to diesel fuel systems in Bangor Maine and had it reflashed. They didn't seem to think anything sounded weird. Does this sound like an air/fuel mix problem? I've checked for any boost leaks and I haven't found anything. It's really irritating 🤣 Thanks! Keep up the good work!

Hey y’all great video Like always never disappointed! I have a lmk with yalls built 750 trans could you talk about heat in built trans bc I live in Texas and would see 190f in traffic and the 83F out side.... thank y’all again!!!!

How much different is the spool-up of the 64 from stock and the 67 from the 64 in the VVT models? I have a 2007 LBZ that I’m going to be studding and adding some fuel soon and can’t decide if I want the 64 or 67, planning on around 650 to the wheels (stock bottom end) and tow somewhat regularly (anywhere from 3-12k lbs) and all at 4500+ elevation. Both maintain the turbine brake so that’s a plus

At what point should I worry about larger new injectors? Will the factory injectors suffice with the Stealth 64? I have a FASS 100 Signature Series lift pump and the Edge Tuner tune on a '15 LML.

Hey Nick, great video! I have kind of a rare truck that I’m going to start building soon. It’s an 06’ LLY/(LBZ) 4x4 dually with the ZF-6 manual trans. I absolutely love the truck and want more out of it. After watching this video, I’d love to run a twin-turbo set up on it, but have some reservations. I know these years of duramax could have the bad (prone to failure) pistons. Please advise me on the route you would move forward with my truck if you were me. Thanks again, and have great week!

I have a 2007.5 6.7 Cummins should I go 64 or 67? Need to know since I’m gonna do it soon!

I’ve got a 2012 lml with stock gearing and 37s but I want a bigger turbo. I’m not into the super whistly turbos, I like the sound of my stock lml charger I just want more HP. You say a 64 is not good because it would be lugging too much correct? What would be a good option for me?

got 1968 chevelle wagon with lbz and as it is "light weight" and has minimal townging the 67mm would be a perfect? if i wanna do compound setup should the secondary bigger turbo be way bigger than 67mm?

Please do a video on compound setups. And if we can use your 64 or 67 together or with stock etc. I will be buying a compound by the end of this year but honestly don't understand it completely yet. Thanks for the great videos.

Awesome video. When you talk about spool up... 14, 16, 1800rpm, what kind of fueling is behind that? Daily tune, tow tune, race tune?

This may be a dumb question here but I’m new to the turbo game here and I’ve watched all the videos I could find but no one ever says anything about upgraded the cooling system (radiator/ inter cooler). Is it safe to assume stock cooling system works well with this application?

I daily my truck. Not much towing honestly, but I like driving it instead of babying it. Get it out on the weekends. Would I be justified in buying a 67 over a 64 for “fun”?

I have a cummins and I’m getting my fleece cheetah 63 mm switched to a 67 mm titan on stock fuel ez link tuning do you think that would run right I don’t tow and if I do it’ll be like 4 maybe 5 hundred lbs but I do have a 6 inch lift and 35s on 20 inch rims do you think it would still run good with that 67 mm turbo

I’m so torn on which one . Can someone give some fees back. I have a 2011 LML Fass 165 Dtuner tunes all emissions intact, S&B intake stock injectors. I only drive the truck maybe once a week for fun to hot Rod and mainly tow our 5th wheel 14k lbs . Torn between the 64 or the 67 stealth , only want to do the job once and when I do will most likely install the Exergy 10m CP4 as suggested by Dtuner . Thanks

Hi Nick, Wondering if I could get your recommendations, I cant decide to go with a 64 or 67. I would like to keep the exhaust/turbo brake but not a must. I have a 2016 lml, full delete, fass 150. Running 24x14 on 35s with stock gears. I drive the truck about 3-4 times a week. I dont tow much, maybe 10 times a year. Im doing a cp3 conversion soon, probably going with a 10mm pump. Would your 64 or 67 be better for me? Honestly just want to gap other trucks lol

Correct me if I'm wrong but is that the same turbo as the 6.0 but with water cooling

Question. ATS offers a 61mm turbo as an upgrade (the Aurora 3000 i believe). What would be the benefits of going this route? Obviously super quick spool up, but wouldnt this also create too much egt / over all engine heat?

With the ppe high flow exhaust manifold and up pipes this should reduce the turbo surge rev range because the exhaust manifold flows 20% more air? Like say i have the 2" ppe high flow exhaust manifold and up pipes with a 3" downpipe and 3" y bridge intercooling and intake kit with the stealth 64, would it spool up like stock or faster than stock then?

Stock internals lmm, would it be best to go compounds? I've heard going this way with these stock engines is what can grenade stuff due to such instant high torque compoundsmake.

Would the 64 work well at high elevation long grades (Colorado) if rpms were kept up? I like to keep the rpm 2300+ up the long steep grades. Or is a twin set up the only way to go?.

So how does the turbo choice impact a manual truck? I drive an 04.5 cummins 6 speed manual and I recently purchased the mm3 from you guys and I love it! Can't speak highly enough and very happy I went with you. I am now looking into a turbo and was thinking about the 67. Is that to big for stock fuel? It's a dually with 34's and I really only tow my boat on a rare occasion. What would be a good choice?

Compound turbo setup 66mm vally and 76mm Atmosphere

How does this apply to vgt turbos.

I need help with large tyres

Would changing the turbine wheel alter the performance? I have a stock 08 and looking for a little extra.

I have 2011 LML that was rebuilt with a CP3 conversion, and a stage 1 Garrett Powermax. At around 6000ft elevation, the drivability is nowhere near as good as the stock turbo was. Great for regular street driving, but boost/hp drop off significantly when the truck shifts into 4th/5th. If I don't back off the pedal, it also smokes like a freight train. I'm planning on going back to stock... SOON.

I hope this wasn't already asked. I couldn't find it in the comments. Do you know if the edge cts3 tuner will ruin a stock LML turbo? Should I upgrade to the 64? How do these affect exhaust braking? I do tow a 30 foot 5th wheel but i would put it in tow setting for that and when I'm not towing I'd like to try and get those 75-130 hp gains on occasion but don't want to mess up the turbo and such. Thank you for any help. Sorry for sounding like such a newbie (which I am).

Quick question is this a still the case with the vgt turbos?

Hey nick! What’s up my man seems like you really know your facts on a lot of things so I’m hoping you can give me and answer and I will go based off of your opinion on what I should do. So I have a 2009 GMC Sierra 2500 on a 6” lift and on 35’s. I have a full deletion on my truck through HSP diesel. I have a freshly built engine that’s rated for 700hp but I am not looking to be racing the truck I just want to daily it, tow my rv every now and then but I still want to have some more power. I have a stock transmission, stock injectors, I run a 95gph. I want to run a upgraded turbo and I’m wondering what do you recommend me doing or which turbo to install in my truck.

i bought your stealth 64 for a 2013 lml how much boost should i be putting out. minimax tuner deleted cold air intake and a lift pump

Are you guys planning to do any 6.7 cummins turbo swaps?

I feel like this was very informative, but I'm even more confused. I daily my truck but when I tow, i tow heavy so I'm thinking twins is the direction I need to go.

What does it sound like when your turbo blows I was driving 2013 6.6 and my exhaust noise doubled and a lot of clanking

Hey I wanna a turbo for an 08 duramax

I want 650 hp out of my lb7. I have efi live tuning from a cranked here in Wisconsin. I just cant swing the money for head studs and a turbo for a while since I'm in college but one day I'll have my dream truck. If my damn kidneys dont act up that would be even better Haha.

My turbo surges with out towing for some reason

I have a 5.9 Cummins and I tow 10k camping trailer in Washington State where there are hills and mountains, what would you suggest I do? Upgrade or leave stock?

Hello l have a 97 ram 3500 what turbo you recommend to buy I use for work when trailer 16 feet long but I want to pull and horse trailer to small

I have a 2005 5.9 H.O. 2500 cummins, i bought it with a 4 inch straight pipe, cold air banks intake and leveled. Its a 4x4, im getting 35 inch tires and is my daily driver but tow a 25 foot gooseneck but not often. Im planning on getting the mm3 tuner. Qhich would be the best tumer for me? 64 or 67? I want to be able to have the hp there for fun times but mainly keep it easy on the road.

I surge with a stock turbo on a tuned truck. What is the cause?

Would I have to change anything if I put the 64 in my l5p

You're a very knowledgeable man when it comes to turbos!!! If a guy's wastegate was very hard to actuate(actuator rod unhooked) would you suggest a new exhaust housing? Or would you be able to replace the wastegate

I’d like to put a 67 in my 5.0 Cummins.

2700rpm in 4th gear.....up an 8% grade.. . While floored. ..... Wouldn't that put you at about 98 miles an hour towing a gooseneck..... uphill?..... do the 48re Transmissions have a 5th gear im forgetting about? LOL great info though thanks

I have a 06 5.9 3/4 ton I've put a 4" mandrel bent ex. And Cfm air plenum and ats exhaust manifold and a banks six gun tuner, it's a six speed manual trans,, and I pull a 20 ft trailer with a tractor allot want a good Daily driver 64 or 67 ??

I am new to diesels and just bought a 2006 LBZ duramax. The turbo is out of it and I am wonder what to replace it with. It is getting an egr delete and a set of 33s with a efi live tune. What turbo would you all recommend with keeping the stock trans.

Hi, Nick quick question, What turbo setup above a stock turbo will give you the best mileage a twin set up or 64 or the 67 without pulling a load Thanks.

So let's say I dont even have a gooseneck hitch, ie I dont tow heavy every, and I want to have to make some power but dont want to run 2100 rpms non stop. Could I still run a turbo like a 472 and be able to daily drive a g56 truck?

06 cummins, EFI LIVE 90 over injectors tim moye built transmission bilit input/output/ 2400 triple disc stall, No towing.06 sport, 410 non slip, 11.5 rear. Dyno at 550,/600 1100/1200 torq on 44's 64 or 67???? Daily drive only 4 days a week. Ran 14.21 on 40's with stock turbo. Stock turbo seems to run out of steam at 30 psi 2500 ram, 64? 67?

We need some stealth options gor the 6.7 2020s LETS GOOOOOOOOOOO

If I drop one of these 64 or 67 in my already tuned truck would I need to retune it? Just has a basic Eco or tow tune now.

We need a drop in non Vgt turbos, why does no one make them.

Silly question but is the 64 a stock resembling drop in? I have a high flow intake kit and am looking at a bigger turbo but dont want to buy a whole new intake kit. Like will the piping I have bolt right up to the 64? Thanks!

I was looking at the Fleece Cheetah 63mm drop in for my LB7 Duramax . I currently have it tuned with Banks 6 Gun and have many mods including bigger intercooler, boost tubes , and much more. My tunes now defuel before every shift to prevent transmission damage but I was wondering if i put a 63mm drop in will I need any other supporting transmission mods ?

Would you have to retune with a 64 g2?

Do you recommend bigger than a 3" downpipe with the 67? I can't seem to find anything bigger but then all the brands are making 4 and 5" exhaust systems with the same 3" vband! I thought exhaust flow limit is based on the most restrictive point...

O and a South Bend double disk clutch rated at 750 hp

How much is the proce of the 64 turbo

This is the guy you want to buy a turbocharger from haha

Tell me more

So what’s the best one for a lb7

How much cash

Its NOT a MOTOR !!!! Its an ENGINE

You're not using the term inertia correctly with regards to spoiling up.