THIS TRANSMISSION INSTALLATION KIT IS FOR A CHEVROLET PERFORMANCE 10L90 TRANSMISSION INSTALLATION TO
AN "LT" STYLE CRATE ENGINE USING A CHEVROLET PERFORMANCE ENGINE CONTROL SYSTEM.
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.
Supermatic 10L90 Transmission Installation Kit
ALL INFORMATION WITHIN ABOVE
Date
BORDER TO BE PRINTED EXACTLY
01FE21
AS SHOWN ON 8.5 x 11 WHITE 16
POUND NON-BOND RECYCLABLE
18MR21
PAPER. PRINT ON BOTH SIDES,
EXCLUDING TEMPLATES. TO BE
UNITIZED IN ACCORDANCE WITH
GMCCA SPECIFICATIONS.
10L90 Transmission Installation Kit Instructions
Kit P/N - 19420810
Instruction Sheet – 19420811
REV 18MR21
Revision
Init Rel – Blake Nye
Revision – Blake Nye
PART No.
19420811
Auth
DR
Installation Instructions
Title
NA
NA
Supermatic 10L90 Transmission Installation Kit
19420811
PART No.
SHEET
1 of 14
SHEET 1 of 14