Steering ratio differences between models? Year specific or engine specific?

[Corellian Corvette]

Just a little piece of minutia I'm curious about.

Just replaced the tires on my 2002 4.6, and one observation that hit me is that the steering feel is much, much lighter than on my 2005 3.0 Sport.

Like, the 3.0 feels similar to my e39 530i - pretty weighty and tougher to turn than most modern cars.

The 4.6 is finger light to turn the wheels and it feels like the ratio is much faster as well. Which is even more surprising given how much wider the front tires are on the 4.6

Anyone know why this is? I know the 3.0 is a LCI model, but the engines are different as well so I'm not sure if the lighter steering is an early vs. late change, a V8 vs I6 change, or something unique to the 4.6

Any ideas?