How to Make the Rear End Housing of a Race Car Move Forward & Backwards

Place four 12-inch rulers onto the pavement spread out in the position where the four race car tires would meet the race track. The rulers represent a larger area than the actual contact patch of four race cars tires. That's why it's important to fine tune the suspension for speed. The term allowing the rear end housing to move forward and backward in a race car it is called rear steer. When the right side of a rear differential moves backward in a turn it allows the rear of the car to steer into the corner and handle better.

Things You'll Need

  • Safety glasses
  • Wrench set
  • Socket set
  • Magnetic angle finder
  • Weld on adjustable trailing arm brackets
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Instructions

    • 1

      Weld the adjustable rear trailing arm bracket on the driver's side of the race car chassis about 24 inches forward from the rear differential center-line, viewing from the side.

    • 2

      Weld the adjustable trailing arm bracket on the passenger side of the race car chassis so it is 44 inches forward of the differential center-line, viewing from the side.

    • 3

      Adjust the driver's side rear trailing arm so it aims inward 3 degrees and upward about two-degrees without a driver in the drivers seat. Adjust the passenger side trailing so it aims inward about 3 degrees and aims up about 5 degrees. Adjust the pinion angle of the rear end housing so it aims downward 2 degrees.

    • 4

      Square the rear end housing with the chassis of the race car while maintaining the adjustments. Tighten all the trailing arm adjusting bolts and locking nuts on all adjustments so they cannot loosen up under competition.