The hellcat and other modern muscle have alot of technologic advances over our TR's tech. The technology has come a very long ways since our TR's and the TTA's were born. If the fuel quality of the old days were still available at the pumps today, not this watered down stuff then we wouldn't have to work as hard to do what we do with our antiques. Eventually something is gonna come along and be better than was in the past, that's the price of advances in automotive technology. While some TR owners may tend to forget we need to have more than pump gas to play with the modern muscle, the modern muscle are designed to run on this watered down grade of fuel and the computer in them is far more advanced over what was used in TR's. For pushrod v6 technology that's against v8's of today, we do ok just we need alittle extra help to avoid knock on today's fuel and to make decent power.
Another difference is the modern muscle are using transmission technology that are much more efficient than anything we have for our cars, we have 4 speed transmission cars and the other guys have more gears which allow them to hit their power curve quicker per gear than we're able to plain & simple. We're up against traction control equipped cars, with better weight transfer abilities and of course make more power per cylinder than we are on solely pump gas. We've been out-teched and that's really all there is to it. It's amazing our cars even existed at all and they'll be a day when the hellcats will be in the same boat being out-teched by something.
The hellcats are awesome cars, still love my TR though and wouldn't trade her for all the money in the world regardless of how quick or not she is.