The 3link rear suspension introduced on the 2005 Mustang is missing a design feature which is desirable for the dragracer. I am referring to a form of asymmetry which would provide dynamic cancellation of the driveshaft torque. This would equalize the rear tire loading and thereby provide maximum tractive tire performance. Interference with the rear passenger footwell prevented an offset of the upper link, but there is yet a change which could bring the desired results.

This change would involve altering the brackets at the rear of the lower links in a manner which would provide a net couple dynamically sufficient to cancel driveshaft torque. The default values were provided by a friend and I trust are reasonably accurate. Still, since ride heights vary, it is best that you check each value against your own car.

(For those involved in other forms of racing, it should be pointed out that the percent antisquat is an input value. You can, therefore, achieve more equal rear tire loading out of a corner...while avoiding potential wheel hop problems during braking...by selecting a percent antisquat value considerably lower than the default value of 100 percent. The potential exists, of course, for optional "street" and "dragrace" bracket holes.)

So, the changes dictated by the program's output would provide equal rear tire loading during forward acceleration.

And, of course, the spreadsheet can be used for any arrangement similar to that of the Mustang.