8l80 Box.... Hhhmmmmm
Discussion
A short snipet from their website, note the comparison to the 911 DCT box!! Sounds good.
GM claims the 8-speed improves the Corvette’s powertrain efficiency by up to 5% versus the 6L80. Better fuel economy is enabled by lower top-gear N/V (ratio of engine speed to vehicle speed capability) relative to the 6-speed it replaces. A deeper first-gear ratio improves launch capability. The new 8-speed is over 8 lb (3.6 kg) lighter than the 6-speed while being equivalent in overall size. The transmission controller executes commands 160 times/s, enabling WOT upshifts that are up to .08 s quicker than the DCT-equipped Porsche 911, engineers said. They added that the wider ratio spread also improves overall NVH attenuation.
GM claims the 8-speed improves the Corvette’s powertrain efficiency by up to 5% versus the 6L80. Better fuel economy is enabled by lower top-gear N/V (ratio of engine speed to vehicle speed capability) relative to the 6-speed it replaces. A deeper first-gear ratio improves launch capability. The new 8-speed is over 8 lb (3.6 kg) lighter than the 6-speed while being equivalent in overall size. The transmission controller executes commands 160 times/s, enabling WOT upshifts that are up to .08 s quicker than the DCT-equipped Porsche 911, engineers said. They added that the wider ratio spread also improves overall NVH attenuation.
S800VXR said:
A short snipet from their website, note the comparison to the 911 DCT box!! Sounds good.
GM claims the 8-speed improves the Corvette’s powertrain efficiency by up to 5% versus the 6L80. Better fuel economy is enabled by lower top-gear N/V (ratio of engine speed to vehicle speed capability) relative to the 6-speed it replaces. A deeper first-gear ratio improves launch capability. The new 8-speed is over 8 lb (3.6 kg) lighter than the 6-speed while being equivalent in overall size. The transmission controller executes commands 160 times/s, enabling WOT upshifts that are up to .08 s quicker than the DCT-equipped Porsche 911, engineers said. They added that the wider ratio spread also improves overall NVH attenuation.
Sounds good - though I've yet to drive a PDK Porsche, so don't know how high this bar is set. GM claims the 8-speed improves the Corvette’s powertrain efficiency by up to 5% versus the 6L80. Better fuel economy is enabled by lower top-gear N/V (ratio of engine speed to vehicle speed capability) relative to the 6-speed it replaces. A deeper first-gear ratio improves launch capability. The new 8-speed is over 8 lb (3.6 kg) lighter than the 6-speed while being equivalent in overall size. The transmission controller executes commands 160 times/s, enabling WOT upshifts that are up to .08 s quicker than the DCT-equipped Porsche 911, engineers said. They added that the wider ratio spread also improves overall NVH attenuation.
The best bit though, is that with 8 ratios (if you have the power), you won't be frustrated by the engine rev limiter on V Max events.
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