http://fastestlaps.com/tracks/willow...eets-of-willow Number 16 on the list and number 12 on the list two Heads to Heads that motor trends did and Randy Pobst drove the BMW M4 on each test . The manual was faster than DCT trans because the manual trans car did a better job at putting down power. I like to think its the gear spacing being wider on the manual trans working better with the Turbo motor power band .
The 10 peed trans can be a great thing for the right engine like a E92 s65 motor that only make 300 FT. torque and max power at 8,000 RPM. The LT4 is making 400ft. of torque at a 1,000 rpm its making 500ft. torque of at 2,000 up to it max 600+ ft. torque that engine is never out of its power band . For the car to be able to use that I think the car is going to need wider gearing spacing to be able to use the torque the motor has to make the car go faster with out blowing the tire off the car or the car just going to pull power to hook the car up . If the car is pulling power to hook the car up than what the point. The only time you really be able to use it is at speed over 150 MPH. So how many road course that you can really run a 150 MPH+ on.
Let me make this clear I am not nocking the 10 speed trans, I just think the LT4 engine is not a good match for that trans.
Hole point of the Z/28 part is that you have to be able to put power down on corner exit to run fast lap times . That is why the new 2017 GS corvette with only 450 HP & 450 ft. torque ran only .6 off the ZR1 lap time ( so say GM) . That tells me the C7 corvette chassis can really can only handle the LT1 motor and that car is running a P325 cup2 tire on the back of it. The new ZL1 is only going to have a P305 on the back and a motor with 640 HP & 600ft + torque and you are pack 10 gears in the trans together with it . Now its just me thinking here I don't see how the car not pulling power every time you go WOT under 100 MPH.