Did GM just S#%! on FORD'S 30 Year Investment in Overhead Cam Engines?! | C8 Z06 & LT6 Breakdown! 

Great video, I love when intelligence surpasses brand bias. As an LS guy, the coyote excited me in 2011 because I knew it was good which makes the general push harder, when the hellcats came out I was excited again because that pushes Ford and the general to push harder and we get stuff like this LT6, now this engine will continue to push the other 2 and we all keep winning !

"Who gets these cars just to drive around" As a Corvette owner, I can confidently say 95% of Corvette owners. haha

The new Z06 seems to be designed for one thing and one thing only, to compete against the European car manufactures in GT racing. The GT 350 on the other hand is designed to compete with the Camaro and Challenger.

Cool video, I own a 1990 ZR-1, GM insisted on 4.4 inch bore spacing on the LT5 when it was in development. Lotus was owned by GM during this period and Mercury Marine was tapped to machine and hand build these engines. If there ever was a machine capable of breaking the world endurance records set by the 1990 ZR-1, this Z06 may be the machine. I'm a GM guy, but I respect Ford and Dodge as each has some badass machines. As a child of the 70s and 80s, I remember the days when performance died. It's so cool to see what's coming out of Detroit, great days for performance. 👍👍🏁🏁

I think its specifically "the most powerful naturally aspirated v8 ever sold in a car". Chevy also unveiled the 1004hp naturally aspirated zz632 v8 crate engine. However it's 10.35 liters, so it'll take some engineering to swap it into a miata 🥲

The LT6 crankcase scavenging design is straight F1 architecture

I like your RU-vid "set" setup. It's a REAL desk setup not a staged one many RU-vidrs have. I think Corvette was diverged to compete with Ferrari, Lambo and McLauren with similar maintenance cost and usage expectations. Camaros being left to compete with Mustangs and other muscle cars. And Yes, I'm expecting to pay insane markup for one. But it's still cheaper than Lambo/Ferrari but with a hardtop for track requirement.

I love that these engines are putting pressure on the German manufacturers.

I remember when Ford stated that the Transfer case (PTU) oil was good for the life of the car on early Ecoboost SHOs. They even doubled down on the claim by casting the case without a drain plug! People cracked into them 4 years later to find the oil had turned into black pine tar sludge the consistency of cake frosting. A lot of folks burned up PTU's as a result.

I’m an import guy but very excited about this LT6 and the C8 Z06. So much respect for you for showing excitement for this engine even though you’re a Ford guy/channel. Subbed.

I know there are many that have trouble admitted it but GM has the knowledge and resources to design and build benchmark engines. Forget about all the other screw ups and corporate bs for a minute. There is NO other engine that comes close to the small block no matter what category you pick. Volume, adaptability, cost, hp, durability, mass production, etc, etc. Yes, we can argue about a few mistakes but overall no oil-burning, valve ticking Ford will ever come close. Yes the Coyote is a good motor but we picking #1 here, not 2nd or 3rd place.

That Z06 is one amazing engine, but I'm surprised you didn't mention the titanium rods and flat plain designed crankshaft that's really light because of much much smaller counter balances. Another factor that's high-tech is its high compression ratio that runs on pump gas and tuned intake runners that take advantage of the different firing order to get the most out of intake air pulses. This is the best of the best racing technology all combined into one, that's why it cost so much.

I have no idea what he was talking about but he's made me want a Z06 a lot more than I ever did

Ford has made some incredible engines but they refuse to put them in a small, light weight, aerodynamic modern chassis at an affordable price.

I'm 71 and had 3 Vette's back in the day. This new C8 Z06 has become my new dream car. Great engineering craftsmanship, style and elegance from top to bottom, all in one package and for a reasonable price. Tadge Juechter and his team continue to amaze us.

In regard to driving around normally, the ZO6 will probably still feel quicker than a GT350 because the ZO6 will be geared shorter. Shorter gearing equals more wheel torque and it also gets the engine to higher revs faster. Additionally the DCT will downshift lightning fast and combined with the low rotating mass of the LT6 the driver will be able to get massive instantaneous power on demand. "Normal" driving will as a result be much more dramatic than in a GT350 and much closer to a Ferrari or 911 GT3 experience. Lifetime lash adjustment is nothing new. My 2003 Toyota Matrix had a solid mechanical valvetrain lash never went out of adjustment through 200K miles. Toyota recommended lash adjustment at around 100K miles but when it was measured at even higher mileage it remained well within tolerances. That's without a DLC layer.

Awesome stuff Ken I’m a Ford Chevy guy and I can’t wait to get my hands on one of these C8’s. I was shocked at how well the regular C8 worked on the track I can’t imagine how good this thing is going to be.

I think everyone is getting way ahead of themselves. Just wait until you see it. Also it’s safe to say we can’t compare corvette to mustang. Camaro, Mustang, challenger. Vette is swinging at the GT and all of the European supercars. It’s silly to compare these 2 cars

The Z06 engine is an amazing feat of engineering. GM has almost always hit the mark with the Corvette, but this Z06 is next level. I can't wait to see the Zr1. I'm hoping for a twin turbo flat plane engine. Let's see an 800+ horsepower mid engine Vette.

I love mustangs too and have been a Ford guy all my life as well,… but I cannot deny, that new corvette is bad ass

When going over the valvetrain, you seem to have lapsed back into Ford's mass production zone. These are hand built. You should shift your comparisons between Mustang and Corvette to Mustang and Camaro. There is no comparison between the former now.

Great thorough, informative, and straightforward analysis on both engines. Thanks 🙏

With the future for all automakers (especially the Big Three) being electric, I don't see any domestic manufacturer ever surpassing the LT6 because no business case could ever be made for it. The Ford GT represents the engineering pinnacle for Ford, and they would never develop such a motor to drop in a front-engined platform when they've already done the mid-engine turbo V6 thing with the GT. Behold the internal combustion king - I'm just glad that SOMEONE built it!!

The price difference between the Z06 and GT350 goes much deeper than the engine. GT350 at its core is a modified mustang, which can be $30k. A Z06 is based on a mid engined corvette. You didn't mention the chassis differences at all

This would be be an amazing crate engine to put in a kit car

GM first gave us a glimpse of this DOHC 4.2L Twin Turbo technology 2 years ago in the CT6-V Blackwing, and then for real in the Corvette C8.R 5.5L naturally aspirated V8 engine, which is the precursor to this new ZO6 mill. 👍🇺🇸

Great product you have. The Porsche GT3 also claims to have permanent, factory set for life "lash caps" and use the "Helmholtz resonance principle" to extend the torque curb.

Thanks for the details on the GM engine. As an old Toyota Master tech, in my opinion, I wouldn't worry about valve adjustment on a daily driver. We never had any tighten up except on the high load box trucks that ran 4 cylinders so it may be a problem racing. My concern would be GM getting the specs proper from the beginning, considering quality in mass production isn't their area of expertise. My biggest concern when GM does an overhead cam, due to their past efforts, would be oil leaks.

Man, when you leave Team Corvette to do what they want, those guys sure go Medieval. That's a win not only for the GM guys but for any car guy. The LT6 will find its way in the history books.

This makes me happy to see because lately there has been so much talk about electric cars and there eventual take over of the market. Nice work GM for the gas power engines LOVERS. Great video and explanation of engine, well done.

Love the videos, and really like the incite here, but time for a new chair!!! LOL

I absolutely just watched a guy that did everything in his intellectual power to compare a new ZO6 to a GT350. I would like to add you never mentioned the flat plane crank. Probably an absolute killer. I am a corvette guy, I am presently slowly modifying my 99 FRC. I have been looking for a dyno to get a good base tune on it and now I am a little nervous coming to your shop. HAHA! I live in West Palm Beach. And hope if we cross paths I might be able to help you not change your favorite, but give you a little more of a reason to realize it’s not so bad being #2. All in fun, have a great day.

I worked for GM for years. Specifically at Powertrain. I can tell you that the assembly process is such that they mount the block to a rolling stand that gets moved from one station to the next every 15 minutes. Every nut and bolt is torqued and checked. As opposed to mass production.

Mustang has never competed against corvette, lets start there, also this is not the first time GM have done overhead cam, the first ZR1 was DOHC

The LT6 craps all over the Voodoo. It’s built from the ground up as a race engine, sharing only the bore spacing of the brilliant small block, whereas the Voodoo is completely based upon and bound by the architectural constraints of the Ford modular architecture.

I am a broken individual... I cannot focus on anything except the worn out part of your chair. Thank you though for breaking it down though. You're not over complicating it and it's really easy to understand what you're saying. Thank you sir!

Porsche had the hydraulic valvetrain in the 991.1 gt3 and it had engine issues then when the rs came out the fixed the issue by lowering rpm to 8800. Then with the 991.2 They switched to a fixed valvetrain the engine issues went away and they were able to bump rmps back to 9k. So maybe Chevy won't have any problems with it. But only time will tell

Ford guy here and am actually excited about this new engine for GM. A lot of people who probably cant afford the car are talking smack towards Ford lol. Heck even the old Z06’s are bad ass.

My 92 SHO had a solid valve train and in 240k miles it never needed maintenance.

Enjoyable to watch because you know your craft so well.

I was hoping you were going to talk about the flat-plane crank. That's a pretty major factor of the new design and how it revs so high.

I love the technical content Most people,even the guys twin turbocharging the c8 don’t have this level of understanding.It is truly why I watch your channel.👍👍👍👍

GM has a great "Ad/shortfilm" on the new zo6, think it's on Netflix or another stream. It's worth a watch!

I liked the video because you showed alot of respect to the coyote, I don't know why the main crank in my 2011 coyote engine keeps failing, thats the second time it happens and i had it since 2017 (and that's daily driving) Starts with engine knock and 5 minutes later it sounds like an orchestra. I woul really like to know your thoughts about that. Awesome video! 👍👍

Hey bro, the algorithm loves your thumbnail with the title too. Keep making thumbnails like that and you will keep getting big hits like this 💯

I understand the desire to compare things but let’s say you buy a gt350 and spent 30k on the motor to hypothetically compete or compare with the zo6. The issue is you still have a must and with a compromised vehicle architect. That’s the beauty of the zo6. Not only do you get that engine you get that chassis you get the rest of the GM tech you get a fundamentally better car from a performance stand point and it’s actually special in a meaningful way because it never had to share components with a car that has to be sold in the 20k price range

You coming out like this being a hardcore Ford guy shows character, I'd trust my car at your shop any day....#RESPECT

Great video. Only complaint is I wiped my screen thinking it was dirty but it was the holes in your wall

As the owner of 2 C7 Z06s, they are amazing cars and I’m even more happy now that I’ve had a deposit down for a new C8 Z06 for 9 mos already. I’ll keep my ‘19Z and also have the C8Z. Best of both worlds.

Congratulations 🎊 coming into new senses! Wow, I truly appreciate your intelligence & passion of racing & American Engineering, Made in the USA 🇺🇸!

I am a Ford guy but bravo to GM on this one ! I think they've done a heck of a job here . If Ford was to build something without the restrictions ( bore centre ) etc they use , perhaps they would match up better . Now to play catch up ?

This engine is impossible to hate. The flat plane crank is what makes it so special. Can't wait to hear them screaming.

To be fair, GM is no stranger to OHC/DOHC engines. From the Pontiac SOHC inline six from the Sixties, to the modern HF-Alloytec V6 and Blackwing V8. The LT6 is just an evolution of that experience.

I'm gonna repeat a comment I left on another video about the LT6... Seriously, I'm _amazed_ at what they've done here. An engine that's only 0.3L larger than the Voodoo (5.5L vs 5.2L), revving 'only' 350 rpm higher (8,600 vs 8,250 rpm)...and yet, they managed to pull almost 150 more horsepower out of it (670hp vs 526) and an extra 31 lb-ft of torque (460 lb-ft vs 429). Raising the bar of specific output from 101.87 hp/liter on the Voodoo to 122.6 hp/liter, considering the bore x stroke dimensions for accurate displacement. Sure, Ferrari had a higher number with the 458 Speciale (134.5 hp/liter for a 4.5L V8 reaching 605 hp @ 9,000 rpm), but it's still amazing considering this formula (high-revving flatplane V8) was never done by GM before, while Ferrari has decades of experience. And I think GM did their job right, making an oversquare engine with much shorter stroke (80mm vs 93mm in the Voodoo), so this thing can rev higher and handle those rpm's better too.

Your concern about the valve train was the first thing I thought of when I saw the overview of this. Good for GM if it turns out as intended. I guess we'll see...

The stroke is short because the engine revs out. Put a stroker kit on it and watch it throw a rod out the block.

Looking forward to the day you and PBD has the opportunity to do R&D with one of them. Congratulations on your recent well deserved expansion. You have been working endlessly to get there and your chair shows it. Lol, time for you to get yourself a new comfortable throne for the kingdom. GL going forward

GM has made dual over head cam engines off and on for decades. They actually had an awesome one, they killed with Olds..

For the Coyote displacement to get bigger will require a new block casting. A new 60-degree V10 casting could open the door for 6 and 7 liter displacement with better mid-engine space management.

I don't think the GT350 would do very with with the Z06 being able to hook so well with the advantage of engine placement.

I saw an interview with one of the lead engineers for this engine, and one of the things he mentioned on the valve train, was that they engineered the materials between the cam lobs and the rockers, and valve tips so that they limit wear to the point that you don't need to adjust the valve train for the life of the engine (like you said). I suspect we are talking about tool steels being used in these components.

Imagine if the Ford GT had this engine instead of the Taurus V6.

I just found your channel and subscribed well done Sir. I read somewhere that the C-8 engines are “hand built” they are signed by the builder.I am moving all the stuff to Florida have a LS3 with a ProCharger in my 57 BelAir. You will be about 175 miles from me.

Don't worry about the solid valve train too much. I have had motors with valve shims go on forever without any adjustment, and yes I am jealous too, but happy chevy is upping the ante.

Most modern overhead cam motorcycles are solid valvetrain, spin upwards of 12K rpm, and can usually double the valve inspection interval, often not needing it at 40K+ miles. I wouldn't worry about it, modern machining tolerances really are that good.

Informative for sure we'll see how that graph plays out. I too have all Fords (F250, ST Explorer) but I have a allocation for a Z06 been on the list for over a year now. I went with the Z06 b/c the GT 500 just didn't do it for me, I wanted the GT but the prices are insane. Pretty stoked about the Z06 though.

I'm sure it incorporates some things learned from the LT5 which was developed by Lotus engineers and built by Mercury Marine. They kept the bore spacing of 4.4 somehow squeezed a larger bore compared to the 3.90 and shortened the stroke from the 3.66 originally in the LT5. 31 years later they have access to way more technology and must have liked the LT5 that much more than every LS they ever produced.

i loved ford till i met my legendary cousin{within the family cause his nhra history from late 60s and early 70s} and he had all chevy engines in his 1st gen mustangs. he said he sold his ford dealers for toyota in the 90s because how much he had to do warranty work. said hed give me his last 6cyl 64.5 as long as i promised to use a 383 stroker with nx. still sitting in his yard under a lean to next to his paint shop where he keeps his chevy belair draggster im so damn stoked for chevys new tech. i cant wait till crates are 5kish. would totally use one in a late 40s-early 50s buick. and the sound..... good god the roar is incredible

As evidenced by Ford’s new 7.3 OHV engines, the OHC vs OHV debate will rage on. This engine is bad ass, either way!

Never in my life wanted a Corvette until I saw this new Z06

Referring to the solid lifter cam over valve valvetrain design. All turbo Subaru EJ engines have had this same setup with camshafts acting directly on lifter buckets. I've seen many engines go 150K plus miles without the engine coming out for valve clearance adjustment. Usually what happens over time is the exhaust valve clearance will close up over time and the engine will burn a valve. Given how little miles get put on Corvettes, I wouldn't worry about the valve train at all.

Those 3 butterfly valves between the 2 plenums are opened and closed to take advantage of pressure wave ram induction....ecu control these during certain rpm range

I think Chevy absolutely nailed it with their engine design and placement among it's trim levels. The lt1 makes perfect sense as a larger, more torquey engine for the street and base c8. Then the lt6 for the zo6 that screams racecar and looks to set the zo6 as a thoroughbred supercar. Who knows what the zr1 or zora will be capable of. We could easily see a 1200hp Corvette in the near future. I think turbos could push the lt6 to an extra 230hp if the internals can hold up. So a 900hp LT7 and dual 150hp electric motors up front. 1200hp and the only drawback would be loosing trunk space. Or just delete the back trunk too and add an active aero spoiler like on the Ford GT. Chevy would be playing with the hypercars. They could make that thing start at 160k and it'd still be an insane bargain. It'd be a 918 Spyder for a fraction of the price.

Being a Ford guy my entire life, I never did GM or Mopar bashing. I want all to be amazing. It just pushes the limits for all of them. I would purchase all 3 and be happy. But still nothing like the sound of Mustang. Very distinctive.

Awesome video, the only thing I think is worth pointing out is that it would be a more fair comparison instead of the “base” gt350 to the Z06, compare the price to the GT350R. That one msrp’s at more like $75k which is closer both in price and features to the new Z06

I have always been a pushrod guy because they're so symmetric. But this 5.5 has the large bore and valves I've been waiting for. The ports are raised sky high, like a Ducati Panigale or '17+ YZ450F. There's 20% more bore, and most likely about 20% more power than the GT350. It has a very nice dry sump on the front of the engine. --I'm inclined to think going bigger on the 5.5 isn't going to be practical. The bore can't get that much bigger, so that leans towards stroker cranks. But, look at those piston crowns. They're already short. So, putting in a shorter piston and different rod like I can do with an LS isn't going to work. Besides, we have no idea if there's enough room in the crank-case for that. So, any extra performance on the LT6 is going to come from cams and additional RPM. I think 10,700RPM is going to be the practical limit with serious cams that have 240+ degrees of duration. -- I'm not gonna say boosting the 5.5 is a good or bad thing. I'm a purist. A race bred NA engine should stay NA because of the experience it offers. Honestly, I would chose the A50XS. (Whatever the name is. The forged 5.0 with GT350 heads. I'm a crossplane guy.) TIVCT delete, bigger cams. Very lightweight clutch. Front mounted dry sump. That would be a fun, simple engine. The power isn't the same, but the simplicity is there, and that means a lot.

The valvetrain is supposed to have some sort of diamond coating which is why they say it'll be good for life

One of my buddies is a top engineer on the c8 here in Michigan. He asked the chief engineer if they’ll be making a crate engine he said not for at least 5 more years.

I'd say the dyno graph is a good estimation. The curves will always intersect at 5252, so you have a fixed point on the graph, and the curves can pretty much only go at a certain angle based on the given peak numbers.

Thanks for this technical insight into the new LT6. I, too, am a Ford guy, but that aside, what a great time to be a car enthusiast. Hellcats everywhere. Forced induction is commonplace. Mid-engine Corvettes, etc. With this package, GM has set their sights on bigger game I think: Porsche, Audi, Lamborghini, et al. I expect it will be considered a performance bargain in that rarified air. Sadly, I think a power train like this will be a last gasp for pure internal combustion engines. Every manufacturer is setting their sights on all electric vehicles. It won’t happen overnight, but it is already happening much faster than I ever thought it would.

I was a Ford guy in the 1990's. Well, maybe a bit after yet. Back then though, the legacy of what their actual, REAL performance engineering could do in the 60's and 70's was a lot fresher, and they were even still using some of the engines from that era. There was also John Colleti, who basically single handedly pushed Ford to build things they had no intention of ever building and sold it to his upper managers as a sales pitch product. When Ford decided to end production of the old school, he was tasked with getting the public invested in the new, so he made the Super Stallion and the 2000 Cobra R. Too bad Ford never wanted to actually sell those. That's the thing, Ford has always NOT sold things. It has been, since the early 70's, up to the public to MAKE their own. Ford guys am I getting you russled up? Think about it. In the 80's they had the Fox chassis. MOstly 4 banger and 6 cyl car, but they offered a 5.0 "GT" which of course is pretty well infamous at this point. But..... why not a 5.8 GT? Every Ford guy worth his salt is aware the 302 and 351W engines are basically only held back by an inch or two of engine bay dimension in most swap projects, everything, even the bell housing pattern, is identicle. Why didn;t Ford offer it? They swapped in a built 351 for a pace car build into a Mercury Capri back then. Hid the car from the public on it's way to and from the track to have the engine installed and removed. Why did it take Saleen to put a 351 into a car and show the world what Ford wouldn't do? Ford finally did do it.... to 250 cars and required driving school to pick up the car. Ford has ALWAYS been chicken Sh1t to "allow" the public to have a REAL performance car. The closest they got was the terminators, and that lasted two years before they released the slowest Mustang since the early 80's. Why not put the 4V into the T-birds and Cougars in the 90's? They have the same chassis as the Lincoln mark. Why not the 4v 5.4 into trucks? Why not the 351W into every car or truck for like 15 years that they could have done, even Crown Vics? Terminator motor was amazing, why not offer it in the 05? Ford has some balls, once in a while, the Coyote is a nice engine. When it was released, people were ecstatic! When they had their press conference, someone asked the guy if there was room to improve the numbers with aftermarket. The guy was shocked and didn't have much of an answer but tried to be positive. Even with the Coyote, Ford was oblivious to just how much the public had invested into the 5.0, the garbage 4.6 2v, etc. to MAKE THEIR OWN performance devision out of the lemons they were served, because three decades of GM not being afraid to put a 350 where a 305 used to sit from the factory (just one example) had left Ford fans desperate to keep up, and they had to, in the end, take matters into their own hands to do it. Ford has offered some mean machines over the years, but they never intended them to actually sell. Colleti's method used to convince Ford to even take time to design these things was unfortunately taken to heart and the mean machines were priced at a point the public at large couldn't touch them. Why not offer yesterdays mean machine drivetrain as today's optioned car for less money? Because Ford never intended to set up long term or even any type of volume production for these things. Money. Ford sells cars to grandmas and housewives and the average shmoe that can't handle a 0-60 in 8 seconds car. They have "optional" cars for people that want more, but you pay more. You can buy a mean machine if you have bank. There is no affordable performance. Affordable fun, but not performance. And Ford has been that way since 1973. They are happy to sell volume and relax in their chair as a distant third or fourth in domestic performance. They save face by making a ringer model, then price it so high they will only sell a thousand or two in a year vs 60,000 of the base model. Mostly, this is a result of Ford becoming and staying interested in being a global company. They spend more time and money worried about foreign sales then domestic, and in the big picture performance sales domestically are a fraction of their companies' financials. I switched to Dodge back in about 2006 when it became evident Ford was going to "1974" the Mustang while Chrysler was dropping truck engines into sedans and wagons, and then offering AWD to go with them. There is still a worked over fun to drive 94 Mustang in my driveway of course. I bought it 15 years ago. It was going to be swapped to a 351. Life got in the way, so I tuned it for back road highway cruising and it does what I want. I bought it to replace an 84 Capri. The Capri did have a 351.

I'm a Ford fan myself but I've always appreciated all high performance cars. I love this Corvette and I'm very much looking forward to what ford has to offer as far as competition for this.

Gotta say, I was gonna talk some friendly smack about you being a Ford guy, but you are clearly a car guy. Great job on the comparisons between the two cars.

Holy shit huge props to you for a tually knowing and acknowledging the existance of the mark viii

The Vette and the Mustang are very different animals. if I'm mostly tearing around the streets of Boston the Mustang, or a Camaro is a better fit. but with the Vette they are clearly going after the European supercars, for a fraction of the price. the Corvette is a supercar, where the Mustang is still a fairly traditional muscle car. obviously as a mechanic I drive a 2000 Marquis..as we all do. In a movie John Travolta once said: "you don't need speed. if you're important, people will wait for you."

Great insight into the two engines. The Z06 also has a 8-speed DCT verses the Ford GT350 6-speed manual. That just makes the Z06 that much in performance and should increase the cost to performance ratio.

The piston speed on a 5.2 is 114 mph, the piston speed on a Ferrari 458 is 108mph the piston speed on a LT6 is 106mph this lets the LT6 Rev up to its 8,600 red line with less vibration than the Ford 5.2 generates at 7,800 RPM.

Ford needs to come to the market with a more economical version of the ford gt with a comparable larger displacement naturally aspirated overhead cam engine. Keep up the great work! Cheers from free Canada

Well, Ford could come out with an EcoBoost engine designed to mix oil and coolant and self-destruct, but they already did that...

2 main points, I think your estimation on torque is over-estimated roughly 30 to 40 lb-ft at the low engine speeds - assuming this engine is capable of the same torque capacity of a 2-valve pushrod engine. This assumes this engine will be better than other 4-valve V8 engines at low speeds. Secondly and more importantly - if you add stroke to either flat plane crankshaft engine, the secondary vibration that is inherent in ALL flat plane crank V8 and 4 cylidner engines will become excessive. Horizontal vibration is inherent with all flat plane crank engines and this is directly affected by the rod length to stroke ratio (R/L) - so if you increase stroke, the rod has to become shorter and vibration is enhanced and then multiplied when you double the rpm. So a small vibration at 4,000 is likely 4x when you double engine speed to 8,000. The bottom line is Chevy did their homework and stretched the stroke and resultant rod length to stroke ratio as far as is possible to minimize (but not eliminate) the vibration. Many years ago Ryan Falconer built a 5.0L 3.00-inch stroke small-block Chevy for Formula 5000 racing and discovered it shook itself apart. He probably put the rod length at 5.7 inches which makes the R/L less than 2.00 on a 3.00 inch stroke which tends to amplify the vibration. So the bottom line is you can't stroke this engine to make more torque - it will shake itself to death. Look up secondary vibration problems with flat plane crankshafts. It's best to avoid modifying the bore/stroke/rod length design orientation in this LT6 engine for many reasons.

Can’t wait to see what this car does, just hope they find a tuning fix. That was me on 95 in the grey grand sport the other day heading to PBIR, unfortunately only got to see you make one pass before I had to leave

I think you hit the nail on the head with the Corvette motor, larger bore, shorter stroke. Does anyone remember the 1969 Camaro Z28? Bore 4 inches, stroke 3 inches. Revved to 6500 plus way back in the day.

we have the C6 6.0 in our UPS trucks, but on propane. the small 500's are fun to drive.

I feel like part of the problem with ford's engines is that the coyote is designed based off of old workhorse motors to be a mostly performance motor, and the ecoboost motors are the ones designed off of racing engines that end being workhorses. I love ford too but I feel like their thinking on engines is backwards

Hm ford making a push rod v8 with Godzilla and now GM making a dual overhead cam, this is such a weird time we living in lol

Can't really compare costs based just on engines, the Corvette is also mid-engine etc...a lot of other factors going into the cost difference.

This is an excellent video, You have great practical knowledge of engine architecture. Does the new Z06 engine have direct injection? And how many valves per cylinder? If so wasn't in Australia (And won the lottery I am employing your services straight up ;)

Growing up a ford guy, I've always wanted to ask a really dumb question, something along the lines of "why do people always compare the Corvette to the mustang"? But, I do actually understand, seeing as how ford doesn't make a supercar besides the ford gt that's actually attainable, so they end up comparing mustang to Corvette. I remember as a kid hearing people try to say the fox body is a better car than a c4 or c5 and I'm like...better in which way? Stock for stock it's going to lose in handling, braking, and top speed. Sure, you can build it to be a nice trailer queen car but it wasn't designed off the bat to be a track car, it was designed to be a mass produced car. I agree with this guy, there's only so far you can go with the modular idea, at least stock once again, but it's crazy how far dodge and chevy both pushed the pushrod v8, in terms of power and torque output, to where one of my buddies had a new 1Le ss, and it was just as fast as any mustang gt "performance pack" with all the "extra" technology, and definitely handled quite a bit better with the 1LE package. The brakes were Soo good too, that car really surprised me. It felt more like a track car from Germany than a tail wagging, lots of torque, low top speed car that some people assume muscle cars are. Unfortunately, whether I cheer for ford, or dodge, or chevy, well all be losing within a few years unless something major changes in the government. We've made a lot of advances in engine design and efficiency and even pushed some racer ish tech out to the masses, but we all lose within the next 5-10 years when it gets banned anyways, and the ones that are still on the road get "forbidden" to be modified in any way. A say end to the american dream, and especially people like me who grew up eyeballing all the shelby cars back when and of course some of the new muscle and supercars. Oorah chevy for one last ditch effort to resurect the piston engine, boo for it probably being one of the last ones, probably ever.

This engine was tested for a very long time. The shimming with the valve lashing and so on was done and they say never needs to be done. The oiling system on this car is superior. I recommend you go look bad footage with the second in command engineer on this motor. He goes through the incredible oiling system on this car. It is actually incredible and all the tolerances are so within spec they test the engine before the shims they test the engine after the shims and then they test it again. This thing is a freaking monster

Dude, I'm an European immigrated to 🇨🇦. I can't beleve how much reliable performance American automotive industry is throwing in! Started with Dodge, Ford and now Cadillac ATS-V. When prices come down... GT-350/Mach 1, CT4/5 Blackwing and now a mid engine top of the line NA engine, that revs over 8000!!! I'm soo saving!