Originally Posted by golfdude
From my previous readings of the Chrysler 3.5 liter engine, I think it is significantly underpowered despite the "250 hp" numbers. How can I say this? Well, just look at the Pontiac Grand Prix GTP, the old one, and the 300M. The Pontiac accelerates much faster than the 300M, and that's all I can say.
Consider that the Grand Prix has a 3.8L supercharged engine. More displacement, and forced induction equals more torque. A car with more torque is going to feel a lot more robust off the line. Plus, gearing, shift strategy, etc are going to be different. Not quite apples to apples. But, if those two engines were run side by side on a test stand, I think you could reasonably estimate how they might compare if they were installed in the same car.