Thank you for choosing Chevrolet Performance as your high performance source. Chevrolet Performance is committed to
providing proven, innovative performance technology that is truly.... more than just power. Chevrolet Performance parts are
engineered, developed and tested to exceed your expectations for fit and function. Please refer to our catalog for the Chevrolet
Performance Parts Authorized Center nearest you or visit our website at www.chevroletperformance.com.
This publication provides general information on components and procedures that may be useful when installing or servicing a
Supermatic Transmission. Please read this entire publication before starting work. Also, please verify that all of the components
listed in the Package Contents section below were shipped in the kit.
The information below is divided into the following sections: package contents, component information, and Supermatic
Transmission specifications, additional parts that you may need to purchase, torque specifications, and a service parts list.
It is not the intent of these specifications to replace the comprehensive and detailed service practices explained in the factory
service manuals.
For information about warranty coverage, please contact your local Chevy Performance parts dealer.
Observe all safety precautions and warnings in the service manuals when installing a Supermatic Transmission in any vehicle.
Wear eye protection and appropriate protective clothing. Support the vehicle securely with jack stands when working under or
around it. Use only the proper tools. Exercise extreme caution when working with flammable, corrosive, and hazardous liquids and
materials. Some procedures require special equipment and skills. If you do not have the appropriate training, expertise, and tools
to perform any part of this conversion safely, this work should be done by a professional.
The information contained in this publication is presented without any warranty. All the risk for its use is entirely assumed by the
user. Specific component design, mechanical procedures, and the qualifications of individual readers are beyond the control of the
publisher, and therefore the publisher disclaims all liability incurred in connection with the use of the information provided in this
publication.
Legal and Emissions Information
This publication is intended to provide information about the Supermatic Transmission and related components. This manual also
describes procedures and modifications that may be useful during the installation of a Supermatic Transmission. It is not intended
to replace the comprehensive service manuals and parts catalogs which cover Chevrolet engines and components. Rather, it is
designed to provide supplemental information in areas of interest to "do-it-yourself" enthusiasts and mechanics.
This publication pertains to transmissions and vehicles which are used off the public highways except where specifically noted
otherwise. Federal law restricts the removal of any part of a federally required emission control system on motor vehicles. Further,
many states have enacted laws which prohibit tampering with or modifying any required emission or noise control system.
Vehicles which are not operated on public highways are generally exempt from most regulations, as are some special interest and
pre-emission vehicles. The reader is strongly urged to check all applicable local and state laws.
Many of the parts described or listed in this manual are merchandised for off-highway application only, and are tagged with the
"Special Parts Notice" reproduced here:
Special Parts Notice
This part has been specifically designed for Off-Highway application only. Since the installation of this part may either impair your
vehicle's emission control performance or be uncertified under current Motor Vehicle Safety Standards, it should not be installed
in a vehicle used on any street or highway. Additionally, any such application could adversely affect the warranty coverage of such
an on-street or highway vehicle.
Chevrolet, Chevy, the Chevrolet Bow Tie Emblem, General Motors, and GM are all registered trademarks of the General Motors
Company.
Supermatic Transmission Controller Kit
TITLE
Supermatic 8L90 Transmission Kit Installation Instructions
LT1 Crate Engine - 19417579
LT4 Crate Engine - 19417580
19371499
IR
AP1
PART NO.
1
30
SHEET
OF