January 23, 2014
G-Body Rear Coilover Conversion Kit
Installation Instructions
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 G Body coilover conversion kit. Installing this
product will require the unbolting and removal of some 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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G Body Rear Coilover Conversion Hardware Kit Checklist
Installation Instructions (1)
Black Aluminum Shock Adapters (2)
½ bolt sleeves (2)
Bolts
Upper Shock Mount (4)
3/8 x 1 3/4 NC
Bracket Mount (2)
7/16 x 3/4 NF
Trailing Arm Mount (4)
12 x 100 mm
Shock Adapter Mount
5/8 x 4 ½ NF (2)
5/8 x 1 NF (2)
Nylock Nuts
5/8 (2)
7/16 (2)
3/8 (4)
12mm (4)
Washers
5/8 (4)
7/16 (2)
3/8 (8)
12 mm (4)
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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 classic car with your new
Speedtech Performance coilover brackets and shocks. We recommend you
inspect all of your car's suspension prior to installation of our parts, such as
bushings and trailing arms which may be worn and could cause adverse effects.
Replace parts as necessary. Now is a great time to upgrade to our Articulink rear
trailing arms and adjustable rear sway bar.
2. Jack up and properly support the vehicle's frame on sturdy jack stands.
Remove the rear wheels if needed for extra room to work. With the rear axle
supported, remove from one side the rear shock and the rearward part of the
lower trailing arm from the axle bracket. Carefully lower the rear axle to the point
that you can remove the coil spring. Note that doing this one side at a time will
keep the axle located in position.
3. The Speedtech coilover bracket is designed to simply slip over and bolt on to
the existing axle bracket. Note that for determining left and right sides, the shock
mount tabs are located inward.
4. Hardware placement:
Bolt the 7/16 x 1 ¼ bolt, 7/16 washer, and 7/16 Nylock nut through the back side
hole where the factory shock bolt used to be. Do not fully tighten at this time.
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Your new bracket has 3 possible placements for the trailing arm so that you can
adjust instant center. For stock specs, use only one 12x100 mm bolt, 12 mm
washer, and nylock nut and place the trailing arm back in the factory location. To
adjust the arm downward, use one 12x100 mm bolt, 12 mm washer, nylock nut
and the 1/2” sleeve in the factory trailing arm mount location. Then use the extra
12x100 mm bolt, 12 mm washer, nylock nut bolt to attach the arm through one of
the remaining lower holes.
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The 5/8 x 4 ½ and 5/8 x 1 bolts attach your shock adapter to the bracket. Placing
the bracket as pictured is a good starting point. If you want additional ride height
drop, simply flip the adapter vertically 180 degrees so that the longer bolt goes
through the lower hole in the bracket.
5. Attach the upper portion of the shock with the T bar bracket in the factory
shock mounting position using the 3/8 bolts and washers.
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6. Be sure all bolts are tight.
7. Repeat this process for the other side.
8. With the weight off the rear suspension, support the rear axle and set the initial
ride height according to manufacturer recommendations. Replace wheels and
tires and carefully lower the vehicle back onto the ground. Now fine tune your
ride height adjustments.
Because you have used factory mounting points as a base for this kit a wheel
alignment may not be necessary. If you have installed adjustable trailing arms
and/or changed front suspension components at the same time we do
recommend having an alignment performed by a reputable source familiar with
performance based alignments on older vehicles.
Note: Use alignment specifications on next page, not alignment shop
pre-programmed factory specs!
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Driver Side
Passenger Side
4 Degrees positive Caster
4 ½ Degrees positive Caster
0 to ½ Degree negative Camber
0 to ½ Degree negative Camber
3/ 32 Total Toe-in
3/ 32 Total Toe-in
Driver Side
Passenger Side
5 ½ Degrees positive Caster
6 Degrees positive Caster
½ to 1 Degree negative Camber
½ to 1 Degree negative Camber
3/ 32 Total Toe-in
3/ 32 Total Toe-in
Driver Side
Passenger Side
½ Degree positive Caster
½ Degree positive Caster
¼ to ½ Degree negative Camber
¼ to ½ Degree negative Camber
1/8 Total Toe-in
1/8 Total Toe-in
Note: These are only suggestions and may need additional changes to
achieve the optimum settings for your driving style or situation.
Daily Driving, Street Performance Specifications
Aggressive Track Alignment Specifications
Original Alignment Specifications
**For reference purposes only. Do Not use these specs.
1-435-628-4300
www.speedtechperformance.com
Copyright Speedtech Performance USA LLC
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Terms and Conditions of Sale
1. Effective January, 2008, supersedes all previous policy statements. Policies are subject to change without notice. Speed tech performance
Ltd. is not responsible for printing errors.
2. Speed Tech Performance Ltd. does not endorse, nor recommend modification of vehicles for use on public highways, since warranty or
government regulations may be violated. As an express condition of sale of any performance part, the buyer acknowledges and agrees to use
the performance parts for the modification of vehicles in sanctioned OFF-ROAD competitive events and show purposes only. Customers
should exercise their discretion on matters with regards to the purchase and installation of these products.
3. Speed Tech Performance Ltd. does not ensure the legal use of these products. We do not guarantee the fitment of these products for
anything other than there intended application nor do we assume any responsibilities what so ever for the misuse or losses incurred by the
use of any of these components. While every effort is made to provide technical information and assistance, we have no control over owner
installation, modification, and unusual stress that performance parts are subject to.
4. The customer acknowledges that Speed Tech Performance Ltd. and its employees are not responsible for any mechanical failures due to
the use of parts sold, supplied or installed not for their intended application. Speed Tech Performance Ltd will not be held liable for any
damages which are incurred directly or indirectly on the vehicles or operators or passengers of the vehicle
5. Please consult your sales agent and/or technician prior to purchase of any of Speed Tech Performance Ltd. Products to ensure proper fit.
The buyer assumes all responsibilities for determining the suitability of the product. All aftermarket products should always be installed by
professionals only.
Warranty Claim:
1. Speed tech Performance Ltd. Warrants its products against materials and workmanship failure for the term of 12 months (1 year) from the
date of purchase and only up to the amount paid with proof of purchase.
2. Seller’s liability shall as limited to repairing or replacing, at its option, any defective product which is returned, freight prepaid to Seller,
according to the Merchandise Return Procedure set forth in Section 3 below. Buyer shall bear all responsibility for shipping charges and risk of
loss or damage during transit to Seller. Products which have been subjected to abuse, misuse, alteration, neglect or unauthorized repair or
installation, as determined solely by Seller, are not covered by this warranty. Any alterations, addition, improvements or attachments to the
product(s) not authorized in writing by the Seller shall be deemed to be a waiver of this warranty by Buyer and shall render this warranty null
and void. Seller shall return repaired or replaced product(s) to Buyer, at its expense via regular ground service in Canada. Shipping charges
by all other methods and to all other destinations shall be borne by Buyer.
3. Merchandise return procedure
A. If you purchased your Speed tech performance ltd product from us or from an authorized dealer, you are covered by the terms of this policy.
All claims however, must be submitted directly to Speed tech performance Ltd.
B. Call the customer service representative at 1-888-467-1625.
C. Provide the invoice number, date of purchase and reason for return
D. You will be assigned a Returned Goods Authorization Number (RGA). The package you return must show the RGA on the outside of the
package, include the original invoice and be shipped prepaid to our facility. The part has to be in its original packaging materials and be in a
resellable condition. For parts presenting signs of use, only warranty claims will be accepted.
E. Ship to seller, freight pre-paid and insured for replacement cost in original packaging.
F. Replacement or repair decision will be made when merchandise is received by seller. No advance replacement is available.
How to File a Warranty Claim:
The answer to ALL the following questions should be YES before contacting our Customer Service Department.
Is the part appropriate to your application?
Did you carefully and thoroughly read the instructions provided along with the part?
Do you have the proof of purchase?
Are you the original purchaser?
Is the part unmodified and clean?
Is the return date within 3 months from the purchase date?
Is the reason for return a legitimate product defect?
If the answer to all these questions is YES, please contact our Customer Service Department at 1-888-467-1625. You will be given a Returned
Goods Authorization Number (RGA) valid for 30 days. You will also be asked to ship the part prepaid to our facility. All shipments MUST be
prepaid, include the original invoice and show the RGA on the outside of the package, otherwise it will be refused. Please include a brief
explanation letter in order to expedite the warranty analysis process.
What doesn’t this Warranty Cover?
The costs not covered by this warranty include but are not limited to:
- Removal, installation, shipment and insurance costs.
- Improper installation or maintenance
- Misuse or abuse, negligence
- Damage to related components
- Normal wear and tear.
- Costs incurred due to down time of vehicle
- Alterations on the original design or unauthorized repairs.
All warranties implied by law are limited in duration of this warranty. You have specific rights that may vary from state to state or Province to
Province. By purchasing any of the products that are manufactured by speed tech performance you agree to any and all of the above terms
and conditions. Copyright © Speedtech Performance USA LLC
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