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LT4 an LSA Replacement?

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Old Dec 5, 2013 | 10:08 PM
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Default LT4 an LSA Replacement?

Just a thought based off of our good friend Keeks info on the LT4 he gave us late last year. He did mention that the LT4 would be possibly used in a future version of the Camaro ZL1 also. With that said, do you believe that GM has developed the LT4 as a multiple platform powerplant to save costs? The LSA was used in a couple different applications to save costs, the ZL1 and the CTS-V.

I could see the LT4 as an LSA replacement used in a couple different applications (Z06, ZL1, CTS-V) in order to keep costs down and avoid the high expense of the previous gen high performance powerplants (LS7 and LS9). I know that may bother some, but if that lowers the cost to the consumer and makes the C7 Z06 more affordable, then I'm all for that!

What do you think?
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Old Dec 5, 2013 | 10:41 PM
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There is no way GM would spend all of the money developing the LT4 and only put it in the Z06.

The LSA is as good as gone. You can bet your butt that the LT4 will find its way into the CTS-V and the ZL1 although I would not be surprised to see it detuned in those cars.
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Old Dec 5, 2013 | 11:01 PM
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Well if the zl1 will be powered by the lt4 and has mag ride and all the other toys and will stay around 60k there is no way they can price the Z06 at 100k like people on here are estimating.
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Old Dec 5, 2013 | 11:27 PM
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GM's goal is of course to sell as many Corvettes as they can...

IMO the price spread for the C7 Z06 should be kept about the same as it was among the C6 versions,
if they want to maximize sales...
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Old Dec 7, 2013 | 11:24 AM
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Originally Posted by Skullbussa
There is no way GM would spend all of the money developing the LT4 and only put it in the Z06.

The LSA is as good as gone. You can bet your butt that the LT4 will find its way into the CTS-V and the ZL1 although I would not be surprised to see it detuned in those cars.
That's what I'm thinking too. I an see that rustling some traditionalists feathers, but why should GM stop now

Originally Posted by TRANS DAMM
Well if the zl1 will be powered by the lt4 and has mag ride and all the other toys and will stay around 60k there is no way they can price the Z06 at 100k like people on here are estimating.
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Old Dec 7, 2013 | 11:28 AM
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Originally Posted by Gary '09 C6
GM's goal is of course to sell as many Corvettes as they can...

IMO the price spread for the C7 Z06 should be kept about the same as it was among the C6 versions,
if they want to maximize sales...
The only thing that has me concerned about this is CAFE. Under normal circumstances, I'd agree 100%. But if the LT4 is going to hurt fleet averages, GM may price the Z06 higher to intentionally increase profits while reducing volume. They are not going to want to sell a ton of them if the MPG numbers are going to negatively impact this mandated fleet average.
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Old Dec 11, 2013 | 02:34 PM
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Originally Posted by JockItch
The only thing that has me concerned about this is CAFE. Under normal circumstances, I'd agree 100%. But if the LT4 is going to hurt fleet averages, GM may price the Z06 higher to intentionally increase profits while reducing volume. They are not going to want to sell a ton of them if the MPG numbers are going to negatively impact this mandated fleet average.
I understand your theory, but I think GM will try to sell as many cars as they possibly can, to make as much money as they can.
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Old Dec 11, 2013 | 03:48 PM
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Originally Posted by JockItch
The only thing that has me concerned about this is CAFE. Under normal circumstances, I'd agree 100%. But if the LT4 is going to hurt fleet averages, GM may price the Z06 higher to intentionally increase profits while reducing volume. They are not going to want to sell a ton of them if the MPG numbers are going to negatively impact this mandated fleet average.
The ZO6 sales will be a fraction of a drop in the bucket when it comes to fleet averages. IMO

And I hope the LT4 is an option for the CTS-V, ZL-1, and some trucks. The more the merrier I say.
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Old Dec 11, 2013 | 04:29 PM
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Originally Posted by JockItch
The only thing that has me concerned about this is CAFE. Under normal circumstances, I'd agree 100%. But if the LT4 is going to hurt fleet averages, GM may price the Z06 higher to intentionally increase profits while reducing volume. They are not going to want to sell a ton of them if the MPG numbers are going to negatively impact this mandated fleet average.
The LT4 isnt going to hurt fleet averages. Why do you think GM's patent for a 8 speed automatic transmission capable of handling 738 ft/lbs of torque was released right around the time the C7Z06 was confirmed.

Depending on which vehicle its supplied to, I would think an LT4 w/8spd auto is still capable of close to 30mpg hwy.
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Old Dec 11, 2013 | 04:33 PM
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Originally Posted by CGZO6
The ZO6 sales will be a fraction of a drop in the bucket when it comes to fleet averages. IMO

And I hope the LT4 is an option for the CTS-V, ZL-1, and some trucks. The more the merrier I say.
Agreed that LT4 (and the LT1) should be used in as many applications as possible. CTS-V, ZL1, Denali trucks and Escalade SUV all seem like possible candidates.
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Old Dec 11, 2013 | 06:04 PM
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Originally Posted by JockItch
Just a thought based off of our good friend Keeks info on the LT4 he gave us late last year. He did mention that the LT4 would be possibly used in a future version of the Camaro ZL1 also. With that said, do you believe that GM has developed the LT4 as a multiple platform powerplant to save costs? The LSA was used in a couple different applications to save costs, the ZL1 and the CTS-V.

I could see the LT4 as an LSA replacement used in a couple different applications (Z06, ZL1, CTS-V) in order to keep costs down and avoid the high expense of the previous gen high performance powerplants (LS7 and LS9). I know that may bother some, but if that lowers the cost to the consumer and makes the C7 Z06 more affordable, then I'm all for that!

What do you think?
GM has always put the vette motor in the camaro, it's usually detuned, sometimes not, as I remember the LS1 camaro shaving the same rwhp and same 1/4 times.
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Old Dec 11, 2013 | 10:40 PM
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Originally Posted by JockItch
The only thing that has me concerned about this is CAFE. Under normal circumstances, I'd agree 100%. But if the LT4 is going to hurt fleet averages, GM may price the Z06 higher to intentionally increase profits while reducing volume. They are not going to want to sell a ton of them if the MPG numbers are going to negatively impact this mandated fleet average.
Originally Posted by ttboost1
I understand your theory, but I think GM will try to sell as many cars as they possibly can, to make as much money as they can.
Originally Posted by CGZO6
The ZO6 sales will be a fraction of a drop in the bucket when it comes to fleet averages. IMO

And I hope the LT4 is an option for the CTS-V, ZL-1, and some trucks. The more the merrier I say.

All good points, to be sure.

In the final analysis, if the new LT4 motor materially affects GM's CAFE number, the gas guzzler tax
will just be added-on to the cars equipped with the "offending" motor (ex: LS9 engine).

IMO, that extra cost won't stop anyone who wants the C7 Z06 from buying one.
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Old Dec 12, 2013 | 10:10 AM
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Originally Posted by Daekwan06
The LT4 isnt going to hurt fleet averages. Why do you think GM's patent for a 8 speed automatic transmission capable of handling 738 ft/lbs of torque was released right around the time the C7Z06 was confirmed.

Depending on which vehicle its supplied to, I would think an LT4 w/8spd auto is still capable of close to 30mpg hwy.
It won't do anywhere near that if it is a 6.2 with FI because it won't have DOD and with a compression ratio in the range of 8.5-9.0 that will absolutely kill gas mileage. Now if they find a way to make a 10.0:1 CR engine take FI and offer a 5yr/100k warranty then there is a chance you could see 25mpg or so on the highway but 30mpg is a pipe dream
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Old Dec 14, 2013 | 01:44 AM
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Originally Posted by JockItch
Just a thought based off of our good friend Keeks info on the LT4 he gave us late last year. He did mention that the LT4 would be possibly used in a future version of the Camaro ZL1 also. With that said, do you believe that GM has developed the LT4 as a multiple platform powerplant to save costs? The LSA was used in a couple different applications to save costs, the ZL1 and the CTS-V.

I could see the LT4 as an LSA replacement used in a couple different applications (Z06, ZL1, CTS-V) in order to keep costs down and avoid the high expense of the previous gen high performance powerplants (LS7 and LS9). I know that may bother some, but if that lowers the cost to the consumer and makes the C7 Z06 more affordable, then I'm all for that!

What do you think?
The LSA is not about keeping costs down, it's about detuning to keep Corvette GM's Halo Car. You won't see an LT4 in a CAMARO or Cadillac, but maybe an LTA. At the same time, it allows the Cadillac brand to compete with M series and AMG. As for CAMARO, it's a way for GM to compete in the pony car wars.

In no way is putting an LSA (or potential LTA) in another brand about keeping the cost of the Corvette down. It's to meet demand.

Oh, we'll whine about the price but if we don't buy these performance cars, some new enthusiast will. Because even at $80k, there's no competition for a Z06 at that price point.

BTW, the LS7 is back in the Z28 CAMARO . So much for eliminating these exotic high priced engines to keep the cost of GM cars down.

Last edited by NofakeJake; Dec 14, 2013 at 01:51 AM.
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Old Dec 14, 2013 | 02:54 PM
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I don't see why anyone would be bothered if the LT4 ends up in other cars like the CTS-V, ZL1, various trucks/suvs etc...It just makes sense to use it in multiple cars. It doesn't even bother me if GM decided not to detune it for those vehicles.
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Old Dec 14, 2013 | 03:24 PM
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Originally Posted by NofakeJake
BTW, the LS7 is back in the Z28 CAMARO . So much for eliminating these exotic high priced engines to keep the cost of GM cars down.
Though to be fair, it's in a Camaro that may be every bit as pricey as a Z06, even after serious de-contenting.
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Old Dec 14, 2013 | 04:26 PM
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I fully expect GM to do the same with the LT4 as they did with the 3800SC S2 to S3 change. My guess is the C6 ZR1 blower and intercoolers strapped to the LT1 with stronger internals to tolerate the extra power output. The parts are already developed, and the DI+VVT should allow for more power than the LS9 made in stock trim.
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Old Dec 15, 2013 | 10:35 AM
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Lol, guys this is gm.. The lt4 will be in the caddy and zl1. Just retuned. Lsa and 9 is good as gone.
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Old Dec 15, 2013 | 12:02 PM
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Originally Posted by Oneslackr
I don't see why anyone would be bothered if the LT4 ends up in other cars like the CTS-V, ZL1, various trucks/suvs etc...It just makes sense to use it in multiple cars. It doesn't even bother me if GM decided not to detune it for those vehicles.
Originally Posted by oicw
Though to be fair, it's in a Camaro that may be every bit as pricey as a Z06, even after serious de-contenting.
Originally Posted by 04_Z06_CE
Lol, guys this is gm.. The lt4 will be in the caddy and zl1. Just retuned. Lsa and 9 is good as gone.


Finally....the voice of reason

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Old Dec 15, 2013 | 05:05 PM
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The big thing that will tell you what else it shows up in will be how hard it is on gas. LSA and LS9 are both pigs. If the LT4 is better you'll see that (or some derivative) in the CTS-V and ZL1
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