The LT1 is back.....without optispark this time
Discussion
Yeah, saw this news on the Corvette page on Facebook. Here's the link to the official GM press release:
http://media.gm.com/media/us/en/gm/news.detail.htm...
Interesting that they're keeping the 6.2L capacity, power upping to 450bhp and a slight increase on the MPG (26 US, so just over 31 for UK on the motorway).
http://media.gm.com/media/us/en/gm/news.detail.htm...
Interesting that they're keeping the 6.2L capacity, power upping to 450bhp and a slight increase on the MPG (26 US, so just over 31 for UK on the motorway).
I hope they have a also high tech automatic transmissions as option. We have been told that it won't dual clutch unit but there is still hope.
Dual clutch transmission could push MPG even higher. So if GM puts more expensive dual clutch transmission in, the car will actually cost less in Finland because we have CO2 based taxation
Dual clutch transmission could push MPG even higher. So if GM puts more expensive dual clutch transmission in, the car will actually cost less in Finland because we have CO2 based taxation
I know the race team were waiting for direct injection and Gary Pratt was explaining how it works to me on Saturday. Basically because the injection of fuel can be controlled so that it only injects when your foot is on the accelerator i.e. as soon as you lift off the injectors cut off you get better fuel economy and faster acceleration as you don't have the lag of having to create the fuel/air mix and then push that into the cylinder. So the car should return better gas mileage and also be quicker acclerating so all good news
I assume in a couple of years there will also be a ZR1 supercharged LT5? version of the engine and given the approx increase benefit of a supercharger I would guess at least 650BHP.
I assume in a couple of years there will also be a ZR1 supercharged LT5? version of the engine and given the approx increase benefit of a supercharger I would guess at least 650BHP.
Raitzi said:
I hope they have a also high tech automatic transmissions as option. We have been told that it won't dual clutch unit but there is still hope.
Dual clutch transmission could push MPG even higher. So if GM puts more expensive dual clutch transmission in, the car will actually cost less in Finland because we have CO2 based taxation
Are dual clutch transmissions all they are cracked up to be? - although not 'supercars' I've had a couple of cars with these tx's and I'm certainly not convinced. IMHO the finest tx currently is the BMW 8 speed auto - for once an automatic with better economy than a manual!Dual clutch transmission could push MPG even higher. So if GM puts more expensive dual clutch transmission in, the car will actually cost less in Finland because we have CO2 based taxation
First gen ls1 was 305bhp in camaro form.
It ended up at 380fwhp in the VYII HSV
Which if the same potential is there means a possible 560bhp from the LT1.
Cam is pretty mild in shipping form in the LT1 200/207 compared to the LS7 cam 211/230
Looks interesting anyway. VVT is tunable already in the Camaro with good results. It will be interesting to see if the ECU can be cracked.
It ended up at 380fwhp in the VYII HSV
Which if the same potential is there means a possible 560bhp from the LT1.
Cam is pretty mild in shipping form in the LT1 200/207 compared to the LS7 cam 211/230
Looks interesting anyway. VVT is tunable already in the Camaro with good results. It will be interesting to see if the ECU can be cracked.
roscobbc said:
Are dual clutch transmissions all they are cracked up to be? - although not 'supercars' I've had a couple of cars with these tx's and I'm certainly not convinced. IMHO the finest tx currently is the BMW 8 speed auto - for once an automatic with better economy than a manual!
I have heard same from BMW 8 Speed. Is it the ZF 8 speed unit that will likely also be in F-type?C7 LT1 Engine on Tilt Stand
http://youtu.be/8uMp-PTAfCE
Gen 5 LT1 Engine on Dyno
http://youtu.be/dydbLh6E1ag
http://youtu.be/8uMp-PTAfCE
Gen 5 LT1 Engine on Dyno
http://youtu.be/dydbLh6E1ag
vetteheadracer said:
I know the race team were waiting for direct injection and Gary Pratt was explaining how it works to me on Saturday. Basically because the injection of fuel can be controlled so that it only injects when your foot is on the accelerator i.e. as soon as you lift off the injectors cut off you get better fuel economy and faster acceleration as you don't have the lag of having to create the fuel/air mix and then push that into the cylinder. So the car should return better gas mileage and also be quicker acclerating so all good news
I assume in a couple of years there will also be a ZR1 supercharged LT5? version of the engine and given the approx increase benefit of a supercharger I would guess at least 650BHP.
I think it more likely we will see the LT4 come back but we'll seeI assume in a couple of years there will also be a ZR1 supercharged LT5? version of the engine and given the approx increase benefit of a supercharger I would guess at least 650BHP.
Here is a picture of the SC LT4. that I posted last month. Due out in 2015
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Raitzi said:
I actually am quite optimistic because I would save best bits to be revealed in Detroit.
They've certainly been working hard on the camouflage to date!I like the idea of factory delivery at Bowling Green after the initial flurry of excitement has died down - drive it around USA for a bit and then ship to UK...
Well - we can dream!!
Is the GM ECU a Bosch - like the BMW?
Some comments from elsewhere:
"There are several new controllers coming in vehicles that some aftermarket companies like HP Tuners and EFI Live have said they will NEVER support because it's not worth the time invested to "crack" and things are literally turned off over the OBDII interface. Some of those are the new Bosch ECUs that come in the GM/Dodge diesels and some are saying the E92 is one of them."
"I've seen the calibration software its called "inca" and glanced at the code snipets. If you have a few hundred hours to work out the TQ modeling for the throttle input, you might be able to clean up fueling and spark."
"Rumor has it that the E92 is also a Seimens /Continental setup."
"The newest GM DI diesel ECM from Bosch used in the 2010.5+ LML trucks is not readable. You have to tear the ECM apart to read the flash memory. It is flashable but you need to be very careful that you are using the correct base cal or your going to brick it. EFI LIVE and HP will most likely pass on the E92 is it is not readable."
"If you talking about using the the debugger ports, they are not going to have the pin pads on the board as I hear from my moles, it'll be flash over can. the MCU's come preloaded with bootstrap code, all flash memory is built into the new mcu as well.If these are the mcu's I think they are.should be powerpc, dual cores running at 130+mhz."
"What you can not do is read or in other terms download the stock calibration. With out the ability to read the ECM it is very unlikely that EFI Live or HP Tuners will mess with it."
Not looking good then - don't fancy a piggy back ECU.
Some comments from elsewhere:
"There are several new controllers coming in vehicles that some aftermarket companies like HP Tuners and EFI Live have said they will NEVER support because it's not worth the time invested to "crack" and things are literally turned off over the OBDII interface. Some of those are the new Bosch ECUs that come in the GM/Dodge diesels and some are saying the E92 is one of them."
"I've seen the calibration software its called "inca" and glanced at the code snipets. If you have a few hundred hours to work out the TQ modeling for the throttle input, you might be able to clean up fueling and spark."
"Rumor has it that the E92 is also a Seimens /Continental setup."
"The newest GM DI diesel ECM from Bosch used in the 2010.5+ LML trucks is not readable. You have to tear the ECM apart to read the flash memory. It is flashable but you need to be very careful that you are using the correct base cal or your going to brick it. EFI LIVE and HP will most likely pass on the E92 is it is not readable."
"If you talking about using the the debugger ports, they are not going to have the pin pads on the board as I hear from my moles, it'll be flash over can. the MCU's come preloaded with bootstrap code, all flash memory is built into the new mcu as well.If these are the mcu's I think they are.should be powerpc, dual cores running at 130+mhz."
"What you can not do is read or in other terms download the stock calibration. With out the ability to read the ECM it is very unlikely that EFI Live or HP Tuners will mess with it."
Not looking good then - don't fancy a piggy back ECU.
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