So GM is trademarking LT-5 engine moniker

[XfireZ51]

Recently discovered General Motors trademark applications for LT4, LT5, LT88 and LTX have observers wondering what kind of high-performance offerings could be on their way. A new LT4 would mark a return of the engine designation first used on the Corvette Grand Sport, SLP Pontiac Firehawk and SLP Chevrolet Camaro SS from 1996 and 1997. Supposition at Corvette Forum – which provided advance intel on the C7 like these leaked images – believes a new LT4 could go into the high-performance trim of the next-gen, 2015 Camaro that would be more powerful than the 580-horsepower Camaro ZL1.

Seeing an LT5 again would also be déjÃ* vu – in its former life it was a 5.7-liter V8 for the C4 Corvette ZR-1 from 1990-1994 designed by Lotus, producing from 370 hp to 405 hp. A mix of rumor and hope is that the new LT5 will be a supercharged evolution of the 6.2-liter LT1 (pictured) placed in the new C7 Corvette, and that it will go into the C7 version of the ZR1 pumping out something like 700 hp.

The LTX trademark is, as with that last letter, a complete mystery. If the "X" isn't a generic way to denote the whole LT family, it's wondered if it LTX could refer to a crate motor offering like the LSX.

[Meanmyz]

My own thoughts lean toward just leaving LT5 alone. Leave it alone in reference to "our" LT5 powerplant.

I know GM doesn't think in that light though.

[efnfast]

I can't figure out why they would reuse an old moniker at all. Doesn't the "LT-5" indicate what the motor is. Why have two totally different engines with the same name??

[USAFPILOT]

It is annoying that they are bringing back the old codes for completely different engines. I would guess the new LT5 will not have DOHC's, but it should. GM is dropping the ball here. The only thing worse is SLP badging a camaro as an SS454 that is only 371ci.

[XfireZ51]

I can only hope the LT-5 is an indication of something more than in block cams. Maybe they just think ZR1s should have motors designated as
LT-5s.

[Meanmyz]

I can only hope the LT-5 is an indication of something more than in block cams. Maybe they just think ZR1s should have motors designated as
LT-5s.

No, my thoughts are that they are doing it, more along the lines because "it has always been done that way", meaning LS series, or LT series, and in marketing their products, if LT5 adds a little appeal for more sales, than they will do it. In the end, if they introduce a C7 ZR1, it's motor may not even be called LT5....what if that is the Z06 engine, and they call the ZR1's motor L88? Could happen.

Maybe I am getting old, but I thought it raised eyebrows with them calling the new base engine LT1. In my eyes we just had LT1! 1992 - 1996 doesn't seem that long ago!:rolleyes:

[efnfast]

The way I see it, they're just muddying the designations. LT-1 doesn't mean anything anymore because you don't know which engine is being reffered too.

[XfireZ51]

The way I see it, they're just muddying the designations. LT-1 doesn't mean anything anymore because you don't know which engine is being reffered too.

Steve,

I know what you mean. Just wishful thinking on my part. As an example,
the Z/28 should have had a 302 just like the Laguna Seca Mustang did.
A ZL-1 in a Z/28? Really?

[efnfast]

Used to be when I mentioned an LT-1, or LT-5 you knew which engine I was talking about. Not anymore.

[Mystic ZR-1]

GM... Don't screw with the LT-5!!!
I don't care how much HP a new LT-5 may
make, it ain't an LT-5!!!!

[Meanmyz]

GM... Don't screw with the LT-5!!!
I don't care how much HP a new LT-5 may
make, it ain't an LT-5!!!!

I agree with all of you, and for what it is worth:

GM... Don't screw with the LT-5!!!
I don't care how much HP a new LT-5 may
make, it ain't an LT-5!!!!

[XfireZ51]

I agree with all of you, and for what it is worth:

GM... Don't screw with the LT-5!!!
I don't care how much HP a new LT-5 may
make, it ain't an LT-5!!!!

Don't mess w the LT-5 unless they make a Gen2 version.

[Paul Workman]

As we all know the LT5 set Corvette apart from the rest of the heard. Blowing a pushrod LT1(-3) new power levels and then calling it an LT5 is pure

BLASPHEMY!

[Meanmyz]

BLASPHEMY!

You hear that GM? Don't p___ down our back and tell us it's raining.:bootyshak:mrgreen:

[Mystic ZR-1]

How many Corvette owners really know what an LT-5 is?
I hate to say it , but the vast majority of Vette owners are "posers"!!!
Unfortunately, the stereotype isn't that far off base...

[mike100]

I don't see a new engine architecture for the new Z06 or ZR1 models, but any new 'LT5' should be DOHC with all the active timing and manifold tricks.

[BigJohn]

GM... Don't screw with the LT-5!!!
I don't care how much HP a new LT-5 may
make, it ain't an LT-5!!!!


You Guy's are funny!!!

:cheers:

[Z51JEFF]

Personally any recognition towards the past is more than welcome in my book.If the next car carries the ZR-1 emblem as well as the LT5 designation for the motor Im all for it,it could only be positive for the 2nd Gen ZR-1.

[XfireZ51]

Personally any recognition towards the past is more than welcome in my book.If the next car carries the ZR-1 emblem as well as the LT5 designation for the motor Im all for it,it could only be positive for the 2nd Gen ZR-1.

Jeff,

I partially agree. When the C6 ZR1 was introduced I was excited because it would create interest in the previous generations. And I think it has. That's why I support inviting the C6 Guys as part of our registry. However, the LT-5 IMO, is just something different. KOTH is one thing,
but DOHC 32V is something that cannot be ignored.

[Z51JEFF]

just something different. KOTH is one thing,

Now,one thing do I take offense too is when somebody referrers to any Corvette BUT a ZR-1 as the KOTH,we all know theres only one car that carries that honor,and it was built from 90-95.

[Paul Workman]

Went to a little town Route 66 gathering yesterday, and a little spontaneous Vette show-and-shine gathering appeared at a Route 66 dirive-in eatery. There was a pair of C3s; a beautiful '68, L79 (427 BBC tri-power) coupe, my wife Ami's 69 C3 vert, an anniversary C5 vert, and my Z.

I'm used to it by now, but the C3s gathered looky-loos like bees to honey-especially the BBC. But, the Z held her own, and there were several snapping pix of her in all her silver glory LT5. The C5...Ho, hum.

I followed Ami's C3 home, and she was turing that 350/350 loose on the back road blacktops. But, frisky as that 4-speed SBC is, headers and sidepipes n all, the Z would have barely opened the secondaries...if I still had them...to keep up. (Now I know how =Jeff= felt when he did the same thing when I was driving Ami's C3 on a Bloomington Gold Tour one day!) The difference in technology and what the two 350s put out is incredible!

Such fun!

P.

PS: I'm familiar with the SBC water pump when the seal starts to leak - coolant dripping at first and then squirting out of the drain hole on the bottom. But, yesterday, almost to the house, Ami's water pump suffered a catestrophic failure - resulting in what appears to be the bearing itself shattering (haven't got it off the car yet). The pully shaft wobbles violently so as to viabrate the entire front end of the car!:icon_scra:dontknow:

[LancePearson]

I don't see a new engine architecture for the new Z06 or ZR1 models, but any new 'LT5' should be DOHC with all the active timing and manifold tricks.


Logic says LT5 should be our engine architecture or an update of it modernized as LT5 2 or B or some such. For that matter some of the very best balanced, fastest road handling cars are mid engine, rear wheel drive cars like McLaren, Ferrari and the vast majority are DOHC engines. If GM wants to continue as a dominant force someday they are going to have to be a bit more revolutionary, deviate from the two valve pushrod engine and its well known issues. They and Porsche continue to push 1950 thinking on engines and car architecture with electronics being the big changes and by making them bigger blocks of the same thing or sticking non natural aspiration pressure devices like superchargers on them. Seems kind of old fashioned to me despite the current ZR-1's fast 638hp 6.2 supercharged two valve pushrodder.

I think it would be really fun to see a mid engine in front of the rear wheels rear wheel drive Vette of about 450 hp that weighed around 1100 kg or so. It could fly around road courses anywhere in the world.

It's been a long time since I heard someone 25 years old talking about wanting to own a Corvette for whatever that's worth.

[LancePearson]

Paul, that sounds like a really fun day for you two. When we were up at Lance Miller's in his car collection with the Wazoo group a few weeks ago we all got to tour his family car collection. 95% Corvettes though there is a 2006 GT40 there and a Ferrari. The one which fascinated me the most was a white 1954 convertible with the Blue Flame Six engine in it, wire covered headlights. Immaculate. I wonder what that little beauty would auction for? A Calloway as well and many Corvette Challenge C4's as well. Quite a collection of double decker stored cars. Only car garage I've ever been in which had it's own bathroom for guests.....

[LancePearson]

off subject but here is the little car....just gorgeous. Would be a hoot and a half to drive something with that little 165 hp engine. I think it was 165 hp anyway. The storage system is in a small set of buildings with double decker racks. It is set up so that the motor which powers the racks can be moved from rack to rack to operate the lifts. Pretty clever to keep costs down. The cars are kept in heated, climate controlled space and are just immaculate. Jay Leno like!

[Hog]

The way I see it, they're just muddying the designations. LT-1 doesn't mean anything anymore because you don't know which engine is being reffered too.

Same could be said for Z R 1 unfortunatley.

peace
Hog

[BigJohn]

The trademarking is to keep KIA from calling their next car (The LT-5)!


:neutral: