Quote:
Originally Posted by cellsafemode
There's a lot of variants of the ZF8 ... you'll have to be a bit more specific.
The 8L90 matches if not exceeds the performance of pdk transmissions in most cars. There have been a number of tests major publications have made comparing the 8L90 to various pdk transmissions and it's not missing out at all.
Depending on which variant of the Zf8 you're referring to, you might be able to find a direct comparison since the A8 8L90 has been in use in the vette since last year I believe.
I think motortrend and car and driver have done tests on the A8 in the various modes.
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The PDK is specific to Porsche, and GM's 8 speed doesn't hold a candle to it. They (GM) advertised that it was faster than the Porsche unit, but real world testing shows that GM still has a ways to go in terms of transmission downshift times as well as paddle responsiveness for both upshifts and downshifts.
The 10 speed is more promising in that the torque converter doesn't have to unlock to change gears. If the paddle shifters work properly, then the 10 speed is probably the unit to compare to the PDK.