I did and tried to slow my car down over the winter. I got the car to run 9.45 at 144mph, it felt great and safe but I think that is pushing it for a heavy back-half car. I also let my wife drive it a lot so that's in the back if my mind. So I traded a fully ported set of heads for some out of the box head and went from a roller cam to a flat tappet trying to slow it down to 9.90s in good weather and 10.0s all year round. But it only slowed it down about 3 tenths, it's been 9.78 at 139mph so far.

But that was for my car. This year I'm driving a 7.90 dragster for a guy so it wasn't that I didn't want to go faster I just felts I was running to fast for my car.

This weekend I'll be putting the motor into my wife's car and I'm a little concerned that it will be too fast. 318 stroker, 390cid, Edelbrock and the car doesn't have a roll bar so I'm hoping it will run 12.00 but I have a feeling it will run 11.50s or better.

But it's cheaper and easier to slow them down.