I think that I need to clarify what I said in my last post. The car in question was a BBC Chevelle that I had decades ago. I changed gears from 3.31 to 3.73 and the car "felt" slower, even though I knew that it was quicker in the 1/4 mile,ect. Less of a feeling of being pushed back in the seat. Just wondered if this happened to anyone else. I'd be real curious how the Firebird feels with the new gears. Jay6155