Use an angle finder on a vertical location on the front spindles. This may not be completely accurate for actual caster angle, but you really want to know the amount of caster split, and this is a very good way to measure that.
Camber should really be set by tire temps, so knowing a camber angle in advance is not important. But once you get the tire temps right, you need to know the camber angle so you can repeat the setup at that track. Make sure the car is on level ground before measuring. You can use a straightedge against the tire with an angle finder (be sure to avoid the raised letters on the sidewall), or place the angle finder on the upper control arm. Its angle is directly related to the camber angle at that wheel.
7 Panhard Bar Setting
Use either an angle finder on the Panhard bar for an angle, or scribe a line around the adjuster on the slider tube (if you have one), and use that as your baseline. A machinist's rule can then be used to measure above or below the baseline.
While scales are the easiest way to do this, the crossweight is determined by ride heights. Change a ride height and the crossweight changes. If you do not have access to scales for a baseline, set the rear ride height to the chassis builder's specs, or level side to side. Set the front slightly lower but also level side to side. At the track you can tune the chassis, but change ride heights in very small amounts a half to a full turn while trying to keep any single corner of the chassis from getting too high or low. Keep notes and do this until the car handles the way you want. Recheck the ride heights, and now you have a setup that works. It is a lot more time-consuming, but you don't need scales to get there.
9 Rear-Axle Alignment
A simple tape measure is all you need. Measure from a lateral framerail forward from the axle housing to the rear-axle housing. The trick is finding a spot on each side of the housing that is square. Better yet, drop a plumb bob from the hub on the axle centerline on each side, and draw a line through each mark. Measure from the line to an identical spot on the left and right sides of the lateral framerail. Now you have a very accurate measurement. The rear-axle housing is out of alignment if the measurements are not identical.
10 Brake BiasBrake bias is best set on the track with an observer watching for wheel lockup at one end of the car first. Just use old tires. You can get in the ballpark with a torque wrench. With the car on stands, have someone apply the brakes until one end locks up. Use the torque wrench on a wheel lug, and measure the torque it takes to turn the wheel. Apply more pressure until the other end just locks up. Check the torque at the first end again. The front should lock up first; due to weight transfer, the front should require some amount of torque higher than the rear. Asphalt needs more front bias than dirt. Test the bias on the straightaway with an observer before you run at speed on the track.
You need to know what your car weighs and what the corner weighs. If you don't have scales, try to use the track scales, or borrow old grain scales. If all else fails, use local official truck scales so you have a place to start.
12 Rear-End Trueness
It is important to know if the rear-axle housing is straight, or has camber and/or toe. We checked toe in No. 2. Use the angle finder on the brake rotor for camber. Be sure the car is level on jackstands. A little toe-in is OK, up to 18 inch. A little negative camber is OK, up to 316 inch. More of either, or any toe-out or positive camber, requires that the rear-axle housing be straightened.
13 Wheel And Brake Rotor Runout
Clamp a scribe or pointed punch to a weighted (for stability) jackstand. Place the end of the scribe against the wheel rim at the bead or against a brake rotor. Rotate the wheel or rotor until you find the high spot, and position the scribe. Rotate the wheel or rotor until you find the low spot, and use a machinist's rule to measure the gap. That is the amount of runout. Check with the wheel or rotor manufacturer about runout tolerances. Too much wheel runout will have an effect similar to bumpsteer, and rotor runout will cause brake pad kickback, which you can often feel in the brake pedal under hard braking. Rotor runout hurts braking performance.