[oldman]

I think the M6 is a pretty direct feeling ride, the throttle is directly tied to wheel spin. I've owned many combos of turbo, PD, centri, auto and manual vehicles. The SS starts off as a large high comp V8, and some huge advantages over the LT4 are:
lighter car, 2.66 first gear vs 2.20, the 11.5 CR, bigger better breathing cam toss in the normal mod of LT headers the car is really able to put the power directly to the pavement quickly. The same setup and add blower with small pulley to my mind it is near optimal, at no point in the first two gears can WOT be used (well maybe the very top of 2nd if you roll into it) with the pedal.

So I can't speak about a stock SS m6 going to say a 4" pulley P1X, will there be some delay in "fun" by pressing the pedal? but for a full built engine and a D1X all throttle application has to be modulated and there is no waiting for wheel spin on the back, at least nothing that a direct hop out of one car with PD, hop into a centri car would show.

Now if you are going to say, well in gear passing is easier with the PD, absolutely it will be, and probably the same with normal get on it with an auto, the PD is just going to supply more power sooner and it does not matter how much the auto soaks up. Or the torque limiter.

IMO, the centri is easier on the drivetrain and we are talking way more torque than the M6, shafts and diff are rated at. It is torque that blows up drivetrains. I raced diesel for many years.

GM rates the M6 about .2 slower, the 1/4 mile database says .12 ish, but go to the ZL1, there is a .6 gap from GM 11.2 vs 11.8 and the same or bigger in the 1/4 mile database. I conclude the M6 just has a far harder time hooking the torque to the road even at Lt4 torque levels and so far that has been my experience too. Now I don't know how the whipple guy M6 is in the 10s on contis... That just blows my mind?????