My 82k mile LT1 just doesn't seem to have what it should. It is killer off the line...fish-tail the rearend all over the place but punching it at 45 or 50 it feels like the hatch is full of cement blocks. It just doesn't feel like a sports car. It runs smooth, no misses, etc...just not as much power as I thought it would have or should have. Any thoughts? Are all LT1's like this? I figured 300+ hp would be a little stronger.