Speedtech G Body Rear Trailing Arm User Manual

May 14, 2014

78-88 G Body Rear Trailing Arm Kit

Parts in this kit may vary slightly from photo.

The following instructions are intended for professional installers
and are guidelines only. Speedtech Performance assumes NO

responsibility for the installation of any of its products. All products are
intended for off road use only and must be installed by qualified
professionals only.

Thank you for purchasing your new Speedtech A Body Trailing arm kit. Installing
this product will require the unbolting and removal of your rear suspension. Take
all necessary precautions whenever jacking up your vehicle and use safe and
sturdy jack stands to support the vehicle whenever it is off the ground. Be sure to
take all other safety precautions required to do the job correctly.

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A Body Rear Trailing Arm Hardware Kit Checklist

Installation Instructions (1)

Articulink Upper Trailing Arm (2)
Articulink Lower Trailing Arm (2)
Sway Bar End Link Assemblies (2)
Sway Bar End Link Brackets (2)

Trailing Arms

½ x 3 ½ “ Bolts (8)

½” Stover Lock Nut (8)

½ ” dia. Bolt Sleeves (6)

Sway Bar Links

3/8 x 2” Fine Bolts (4)

3/8” Fine Nylock Nuts (4)

3/8” Washers (4)

Sway Bar Link Brackets

3/8 x 3/4” Coarse Bolts (16)

3/8” Coarse Nylock Nuts (4)

3/8” Washers (8)

*Additionally you will need a drill with a 3/8” bit to properly mount the

sway bar end link brackets.

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The vehicle should be on a level surface before you start.

1. In a couple short hours you can update your Chevelle with new
Speedtech Performance trailing arms. We recommend you inspect all of
your car's suspension components prior to installation of our parts, such
as bushings and brake lines which may be worn and could cause adverse
effects. Replace parts as necessary. We suggest you replace the upper
axle housing bushings with factory replacement rubber bushings. This will
allow the correct amount of articulation that the rear suspension requires.
Axle mounted rubber upper trailing arm bushings are Moog #K6178.

2. Jack up and properly support the vehicle on sturdy jack stands, two supporting
the rear axle and two supporting the front of the frame. Remove the rear wheels.
With the rear axle supported, record pinion angle AT RIDE HEIGHT. You will
need to match this number after your new trailing arms are installed. An easy
way to do this is attach your pinion gauge to the heads of two rear end cover
bolts that align vertically.

3. Support the rear of the frame with jack stands. Remove the shocks and
watching that you don't stretch the brake hose, carefully lower the rear axle until
you can remove the coil springs. Support the axle with jack stands. Place
another jack stand under the pinion ujoint to keep the rear axle from rotating
once it is unbolted. Remove the upper trailing arms.

4. Using the factory upper arms, line up the bolt holes with those on the
Speedtech upper arms. If an adjustment is needed, the Speedtech Articulink
control arms are threaded and can be adjusted by twisting them either to the
right to shorten or left to lengthen. See diagram on page 4.

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