I had the same problem with my Jeep pickup that I swapped the 5.0 Mustang into.......I could smoke the tires all too easily and had to feather it off the line. If I had been serious about getting it to launch I would have gone to a posi and some stickier tires, but it was my shop truck, so I just lived with it.

If you look at any of the drag trucks running around you will see big meats under the back.

Don