General Motors has filed an application to register LT5 as a trademark with the United States Patent and Trademark Office (USPTO), GM Authority has discovered.
The automaker’s September 19th, 2016 application is assigned serial number 87175676 and specifies that the mark will be used to name “Engines for automobiles, sport utility vehicles, trucks and vans.”
This is the second time time that General Motors has applied for the LT5 trademark, with the first time being on April 2nd, 2013.
The GM Authority Take
This second trademark filing fans the rumor flames that peg LT5 as a forthcoming GM V-8 engine destined for duty in the upcoming C7 Corvette ZR1, which is said to make over 700 horsepower.
We believe that the reason for GM’s second filing for the LT5 mark is directly associated with the automaker’s true desire to secure rights to the mark, but unfortunately running out of time to do so using the original 2013 application.
It’s worth noting that, to successfully register a trademark, an applicant bears the burden to prove to the USPTO that the name for which it is filing (in this case — LT5) is a real-world product or service. This is performed via a document called Statement of Use, a vital element of the trademark application process that the applicant has up to three years to provide to the office.
To note, the LT5 mark was re-filed concurrently with the a trademark application for LTX.
Stay tuned to GM Authority for LT5 news as well as for continuous GM news coverage.
Comments
I read an article ,that said the engine for the future Corvette C8 ,would be called LT5! Which is a DOHC 4 valve, 4.5 plus size V8 engine
It would not be named with the LT family if it was going to be a DOHC.
Theoretically, you’re right. But sometimes, GM doesn’t follow its own naming structures.
You are correct as the LT5 was a DOHC Lotus engine at one time in the past ZR1.
We must remember these are just engine option codes and they have not always held to a strict code.
As to if this will be a DOHC or not no one on the outside can say but the fact is they will have to go to one at some point just to meet emissions as the levels get stricter and more difficult to meet with the 2 valve.
Also with a Mid engine the issue of keeping the engine below the cowl and fitment in the front compartment is no longer an issue.
At one time Chevy had explored doing an V8 that could be DOHC and in block. Not sure if that is really fee sable but at GM anything is possible if they want it bad enough. .
Wouldn’t a ZR1 motor just be an upgraded Z06 LT4? They can easily get a 100hp with a larger blower.
I heard they were going with a bigger in the new Z06 to eleviate the cooling problems. I am guessing they may go with TT for the ZR1.
I doubt they will go with a complete new engine in the ZR1, in a car that will only be around for 2 years. Unless that engine becomes the powerplant for the C8.
A DOHC wouldn’t fit under the hood in the Corvette. It would just be too tall. An overhead valve engine allows the very low hood line in the Vette which is highly desirable.
Cooling issues weren’t blower related in the Z06 and they have been solved in 2017.
The Eaton TVS gen2 used in the Z06 outputs 30% lower heat than the TVS gen1. The gen 2 generates only 9.7psi in the Z06 at just under 20,000rpms. Maximum rpm is 30,000 and max boost is 60psi vs 24,000rpm and 36psi for the gen1. So there is plenty of safety margin left here.
IMO it would be very easy to get another 100 hp from the LT4 without drastic changes. GM may instead spend available money to remove mass from the vehicle in order to improve performance. HP without weight reduction wouldn’t do it. And BTW, a DOHC engine would be guaranteed to add weight.
file:///C:/Users/B/Downloads/TVS2-Technology-Improving-Supercharger-Efficiency-Capability.pdf
dear GM
please do not go the Ford route and start doing those stupid OHC engines. please stay true to your roots and keep building good V8 OHV engines. thank you
Stupid Ford DOHC engines with there stupid record 1/4 mile times on factory cast blocks and heads. And they ruined engine master taking top 3 spots. Good thing they got banned.
1990s zr1 was a 5.7 DOHC engine called the LT5, like said.
I think we will see another Dohc large displacement v8 in some form of corvette and the z/28
My guess is this something that will live in the Z28 eventually.
I guess it wouldn’t be too bad of an idea. Depending on how they set it up. Truthfully I would love to see the revision of the 327ci, 350ci, and the 396ci as options for the camaro. I could see if gm went to dohc engines with those displacement how it would be a good idea having the 327ci making about 500hp, the 350dohc making roughly 560hp and a supercharged 396ci making a bit over 700hp. All backed by a 10 speed auto, tri-y headers, dual mode exhaust system, magnetorheological dampers, four mode suspension, Brembo brakes, recaro seats, Alcantara interiors, etc. the ss should have the 327, the z28 should have the 350 and the zl1 should have the 396 all on the upcoming alpha-2 platform. No need to really change the exterior design much. Maybe a different wheel and tire setup but that’s all. It would make everything more fuel efficient because the engine sizes would be smaller except for the zl1 and with 10 forward gears plus an eco mode it should match the current corvettes ability to achieve 32mpg. All while making good horsepower numbers. I would recommend bringing back the color schemes from the late 60s and early 70s as well. To me that would be the best way to really launch the camaro into higher gear. Oh and drop the price down about $5000.00 that would help a bit too.
That may appeal to American baby boomers which in case you haven’t noticed, they’re dying off at an increasingly rapid rate.
GM is a global company now and must appeal to a younger and affluent demographic. It’s appropriate to refer to certain characteristics, which defined the brand in the past, but it certainly can’t define the brand going forward.
There is a portion of the younger population that still loves v8 engine and not these v6 and four cylinder crap cars out here. I’m 31 years old and I would take a hi tech v8 over a 4cyl any day
That’s fine, and I like V8s too, but they are still the smallest percentage of cars sold. More money is being made with 4 and 6 cyl cars for both the Camaro and the Mustang.
Which sucks because weve already seen that a v8 can be just as good for mpg as a v6 or 4cyl can
Also I would say merge the 1le performance package equipment into the standard ss-327 and offer it as the regular ss which would even further make it the best pony car on the market. Ford could never touch it
And that’s why you’re most likely not an auto executive. The majority of buyers don’t want or need the track package and it further increases price and makes it look even more expensive compared to the Mustang. BTW I’m a track guy (road course) but I’m in the minority in terms of potential buyers.
True. But if ford can do so well with a 5.0 and make a “track pack” after the boss 302 left I don’t see why gm can do just as good or better with a potent and efficient 5.3l, 5.7l and 6.4l. Even if the kept the 1le pkg. it still give smaller more efficient engines. If there’s no v8s they shouldn’t be called mustang camaro challenger or charger. They should just cAll them civic Prius Elantra and rio and just make the fwd and kill all the performance out of everything along with removing the pledge of allegiance, heterosexual relationships and everything else that is good and decent
LT5 engine is listed for 2018 in the GM VIN information cards. Vehicle application is Y (Corvette), engine code “9”, listed as 6.2L, SIDI, DOHC, VVT https://service.gm.com/dealerworld/vincards/ (from 11/14/2016 update-PDF format)
Interesting. I assume DI in SIDI is for direct injection what does SI stand for?
How will they fit a DOHC engine in the Corvette and there goes the rationale for the low center of gravity of the current OHV engine?
SIDI is Spark Ignited Direct Injection https://en.wikipedia.org/wiki/Gasoline_direct_injection
The price point and status in it’s intended market for a next-generation Corvette, as a mid-engine design, calls for the DOHC configuration. With the engine behind the driver, the low hood line isn’t the controlling factor that kept the pushrod engine in place for so long. Let’s wait & see what the new piece looks like….I’m sure they’re tapping into their 4 & 6 cylinder DOHC tech, so it’s not like this is new territory. 4 valves trumps 2 in the end. At 6.2L, power will be huge.