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Old 12-02-2017, 06:44 PM
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drobbins
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Default Supplemental port injection

were you folks aware the ZR1 would have this?
hopefully solve the valve coking issue

https://www.motorauthority.com/news/...755-hp-lt5-v-8

paragraph after the second picture
Old 12-02-2017, 08:41 PM
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http://www.mclarenboost.com/content....-to-the-rescue
Old 12-02-2017, 09:53 PM
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Kappa
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The R2650 + dual FI setup is going to be nasty.

A bolt-on ZR1 is going to be capable of making silly power and won't have the fueling issues the LT1/LT4 have because of this setup.

I think they purposely built a ton of headroom into the LT5...

Last edited by Kappa; 12-02-2017 at 09:54 PM.
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Old 12-02-2017, 10:05 PM
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Default Nope! ;)

Originally Posted by Kappa
The R2650 + dual FI setup is going to be nasty.

A bolt-on ZR1 is going to be capable of making silly power and won't have the fueling issues the LT1/LT4 have because of this setup.

I think they purposely built a ton of headroom into the LT5...
It's just purposely built:

https://www.corvetteforum.com/forums...ottom-end.html


Last edited by johnglenntwo; 12-02-2017 at 10:18 PM.
Old 12-02-2017, 10:06 PM
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I am jonesing to get more details on this. Specifically the low side fuel pump specs. I'm sure it will be a big step up from the Z06 and if retrofitted may allow me to run full E85.
Old 12-02-2017, 10:44 PM
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Originally Posted by drobbins
were you folks aware the ZR1 would have this?
hopefully solve the valve coking issue

https://www.motorauthority.com/news/...755-hp-lt5-v-8

paragraph after the second picture
Nothing to do with the issue that is not an issue on LT4 engines.
They added it for additional fuel so they added the port as well.

Old 12-02-2017, 10:46 PM
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Originally Posted by Kappa
The R2650 + dual FI setup is going to be nasty.

A bolt-on ZR1 is going to be capable of making silly power and won't have the fueling issues the LT1/LT4 have because of this setup.

I think they purposely built a ton of headroom into the LT5...
New ECM may mean no tuning!
Old 12-02-2017, 10:49 PM
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Originally Posted by johnglenntwo
What? read what you linked to the ZR1 C6???
Old 12-02-2017, 10:56 PM
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Originally Posted by 3 Z06ZR1
New ECM may mean no tuning!


What GM computer hasn't been cracked in weeks? I remember the threads on LS1Tech telling everything the C7 would be impossible to crack. Took everyone about 3-4 months before boltons and tunes started getting thrown on.

I'll take that bet.

Last edited by Kappa; 12-02-2017 at 10:58 PM.
Old 12-02-2017, 10:59 PM
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Default Yep!

Originally Posted by 3 Z06ZR1
What? read what you linked to the ZR1 C6???
They didn't screw around with that one either!
Old 12-03-2017, 07:51 PM
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Originally Posted by Kappa
The R2650 + dual FI setup is going to be nasty.

A bolt-on ZR1 is going to be capable of making silly power and won't have the fueling issues the LT1/LT4 have because of this setup.

I think they purposely built a ton of headroom into the LT5...
I fully agree with this!!! Intake, pulley, tune and there will be plenty of power to be made. Should be the most capable bolt on Vette ever given they beefed up the motor, increased cooling and upsized the supercharger by over 50%
Dan
Old 12-04-2017, 02:08 AM
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Originally Posted by SpeedyD
I fully agree with this!!! Intake, pulley, tune and there will be plenty of power to be made. Should be the most capable bolt on Vette ever given they beefed up the motor, increased cooling and upsized the supercharger by over 50%
Dan
It would be possible to design the hardware/software so the engine tuning tables couldn't be changed. It would require both hardware and software designed to stop it but it isn't impossible. They don't have to make it impossible all they have to do is make it so expensive and complicated to do the financial incentives for doing it make it not worth bothering to do. As for when it happens all it would take is for CARB to decide they want to force the issue and it would sweep across the country within a short time.

Bill
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Old 12-04-2017, 05:46 AM
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wish they had had the forethought to make this car flex fuel

e85 will be a hero in this car and yes those valves will be nice and shiney!!

gm seems to have researched and helped the vavle contamination issues but there is no doubt that this can be a problem. ask any audi owner.

for sure the new lt5 has some room to grow some bigger cojones on a substantial base, and hopefully enough air flow fins gills like some giant pirahna fish (apologies to T dolby) to keep it cool and stuck down

I like that gm is going to a wing rather than the plastic at the back

more efficient. I'll take a low wing as I'm loving the idea of 210+
Old 12-04-2017, 07:13 AM
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Originally Posted by Bill Dearborn
It would be possible to design the hardware/software so the engine tuning tables couldn't be changed. It would require both hardware and software designed to stop it but it isn't impossible. They don't have to make it impossible all they have to do is make it so expensive and complicated to do the financial incentives for doing it make it not worth bothering to do. As for when it happens all it would take is for CARB to decide they want to force the issue and it would sweep across the country within a short time.

Bill
I don't doubt it's possible but not plausible. there hasn't been a single manufacturer to do this that I know of.
Dan
Old 12-04-2017, 07:30 AM
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Originally Posted by SpeedyD
I don't doubt it's possible but not plausible. there hasn't been a single manufacturer to do this that I know of.
Dan
I seem to also recall hearing something about GM doing this though..
Old 12-05-2017, 11:27 PM
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Originally Posted by Bill Dearborn
It would be possible to design the hardware/software so the engine tuning tables couldn't be changed. It would require both hardware and software designed to stop it but it isn't impossible. They don't have to make it impossible all they have to do is make it so expensive and complicated to do the financial incentives for doing it make it not worth bothering to do. As for when it happens all it would take is for CARB to decide they want to force the issue and it would sweep across the country within a short time.

Bill
Well, people are starting to realize CARB is really going too far, and have finally begun pushing back on the enviro****s.

They tried to push legislation through recently that would have put a lot of aftermarket manufacturers essentially out of business.

Thankfully, SEMA got involved and quashed the legislation.

Certainly plausible for ECM's to get either locked, or be automatically re flashed back to OEM settings automatically if variance is detected.

No bueno.
Old 12-12-2017, 06:07 AM
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Originally Posted by SpeedyD
I fully agree with this!!! Intake, pulley, tune and there will be plenty of power to be made. Should be the most capable bolt on Vette ever given they beefed up the motor, increased cooling and upsized the supercharger by over 50%
Dan
1000 whp bolt on car. The 2650 is a beast.

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