Front end alignment tool for 1965 and 1966 Mustang

This is a remarkably simple tool that will make getting the front end alignment right on the money on your Mustang. What you see is actually all that there is. I took a piece of steel that is an eighth of an inch thick, an inch and an eighth wide, and cut off a piece that's about 2 feet long.I bent it at about 90 degrees in the middle, and bent it at 90 degrees again out near the end, so that it would hook on the back of the rear tire. I drilled a 5/16 hole in the end, and a matching 5/16 hole all the way through a 2 foot piece of one inch square aluminum tubing, and bolted the two pieces together with a 1/4-20 bolt. I then took a couple of 1/4-20 U-bolts and used them to attach a laser pointer to the aluminum tube. I hook this assembly onto the rear tire with the laser pointing toward the front tire. I made a little bracket out of the same steel as the long piece with the bends in it, used a #7 drill to poke a hole in the bracket, ran a 1/4-20 tap through that, put a bolt in the hole and stuck a vacuum cap on the end of the bolt. This is my helper that pushes the button on the laser pointer. He asks no questions, offers no input, he just pushes the button when I tell him to.

With this hanging on the back tire, you can then use a tape measure and come out from the front and back of the front wheel and see how much it's off from straight with back wheel. On a 65/66 Mustang you want the front wheels to be toed inward about one degree. How you convert the measurement that you are taking in inches to degrees is you measure the diameter of your wheel from outermost lip to lip. On a 14 inch wheel this measurement will be about 14 1/2 inches. Take your measurement, multiply that by Pi, and divide that by 360. On a typical 14 inch wheel, your answer should come up as about 1/8 of an inch  being equal to 1 degree. You don't need to calculate pi all the way out to the Feynman point, I just use 3.14159265 . That will be plenty close enough.

With the laser pointing straight across the front wheel you can get the toe-in adjusted correctly. To adjust the camber you just point the laser slightly upward and slightly downward. to get the top and bottom right. The camber is adjusted by means of shims behind the upper control arms.

Changing the geometry of the suspension and steering of any car changes the way that car handles, and if it is not done correctly, it can cause serious injury or even death to the people riding in that car. This is not something to take lightly. Changes in the suspension and steering of a car should only be performed by people that fully understand both how those systems operate and all of the potential hazards associated with them.