Observe all safety precautions and warnings in the service manuals when installing a ZZ502 Big Block Chevrolet (BBC)
deluxe assembly in any vehicle. Wear eye protection and appropriate protective clothing. Support the vehicle securely
with jackstands 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 ZZ502 engine and related components. This manual
also describes procedures and modifications that may be useful during the installation of a ZZ502 engine. 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 engines 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.
Package contents:
Item
Description
Quantity
GM Part Number
1
Deluxe Engine Assembly (ZZ502)
1
19201332
2
Short Block Instructions
1
19171883
3
Long Block Instructions
1
12487523
4
Deluxe Engine Instructions
1
19171884
5
Starter Motor Package
1
19302919
6
Carburetor Package
1
19170094
NOTE: A packing check sheet is included that indicates each individual loose part included with this engine
assembly.
