Pinion angle and driveshaft length.

Power-train set up for 2 joint driveshafts is easy, unless you have a severely raised or lowered vehicle:

1. With the vehicle's weight resting on its suspension, make the pinion parallel to the transmission as a base-line.

2. Roll the pinion downward 2 degrees from the base-line (most street/strip cars) to 4 degrees (maximum) and weld your spring perches. This is the pinion angle.

3. Slide the slip yoke forward until it bottoms out inside the transmission.

4. Measure from the center of the front U-joint to the center of the rear U-joint.

5. Subtract 3/4" to 1" to compensate for slip yoke travel. This is the ideal driveshaft length.