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PERFORMANCE
GM
PARTS
ZZ572/620 (12499190) and ZZ572/720R (12498825) Short Block Specifications
Thank you for choosing GM Performance Parts as your high performance source. GM Performance Parts is
committed to providing proven, innovative performance technology that is truly.... more than just power. GM
Performance Parts are engineered, developed and tested to exceed your expectations for fit and function. Please
refer to our catalog for the GM Performance Parts Authorized Center nearest you or visit our website at
www.gmperformanceparts.com.
This publication provides general information on components and procedures that may be useful when installing
or servicing a ZZ572 short block assembly. 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, torque information, ZZ572/620 and
ZZ572/720R short block assembly specifications, and a service parts list.
The ZZ572 short block assembly incorporates modern technology in a package that can be installed in applications
where 366cid and larger displacement Big Block Chevrolet (BBC) V-8s were originally used. This short block is
assembled using brand new, premium quality components. Due to the wide variety of applications in which a ZZ572
short block assembly can be used, some procedures and recommendations may not apply to specific applications.
The ZZ572 short block assembly in an all new Gen VI Tall Deck Bow Tie Cylinder Block manufactured on new
production tooling; consequently you may encounter dissimilarities between the ZZ572 tall deck BBC short block
assembly and previous versions of the BBC V-8. In particular is the fact that the ZZ572 tall deck BBC short block
assembly in a "Tall Deck", meaning the distance from the crankshaft centerline measured perpendicular to the deck
surface is 10.2" or .400" greater than a "Short Deck" BBC (9.8"). This increase may cause interference in some
applications where a short deck BBC was previously installed. Also, the ZZ572 engines are internally balanced and
only should be used with internally balanced flywheel, flexplates, and harmonic dampers. In general, items such
as motor mounts, bell housing, starters, etc. can be transferred to this ZZ572 tall deck BBC short block assembly
when it is installed in a vehicle originally equipped with a BBC V-8 engine. However, such items as intake manifolds,
headers, push rods, etc. are different. These differences may require modifications or additional components not
included with this ZZ572 tall deck BBC short block assembly. When installing a ZZ572 tall deck BBC short block
assembly in a vehicle not originally equipped with a BBC V-8 it may be necessary to adapt or fabricate various
components for the cooling, fuel, electrical, accessory drive system and exhaust systems.
It is not the intent of these specifications to replace the comprehensive and detailed service practices explained
in the GM service manuals.
For information about warranty coverage, please contact your local GM Performance Parts dealer.
Observe all safety precautions and warnings in the service manuals when installing a ZZ572 tall deck BBC short
block 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.
ZZ572/620 and ZZ572/720R Short Block Specifications REV 15JA08
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GMSPO SPECIFICATIONS.
Specifications Part Number 88962927
DATE
07OC03
Initial Release - Shawn Smith
16FE07
Revised - Rusty Sampsel
GENERAL MOTORS
SERVICE PARTS OPERATIONS
6200 Grand Pointe Drive, Grand Blanc, MI 48439
88962927
PART NO.
REVISION
1
15
PAGE
OF
AUTH
Resumen de contenidos para GM ZZ572/620
- Página 1 GM Performance Parts are engineered, developed and tested to exceed your expectations for fit and function. Please refer to our catalog for the GM Performance Parts Authorized Center nearest you or visit our website at www.gmperformanceparts.com.
- Página 2 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 Corporation.
- Página 3 4. Start the engine and adjust the initial timing. If using the deluxe engine configuration, set the ignition timing to 15° before top dead center (BTDC) and the engine idle to 950 RPM (ZZ572/620) or 1200 RPM (ZZ572/720R) with a timing light and the vacuum disconnected and plugged. Rotate the distributor counterclockwise to advance the timing.
- Página 4 Starter: The starter recommended by GM is a high-torque mini starter. It is a compact starter that delivers plenty of torque in a small package which offers increased clearance for extended oil pans and exhaust systems. It is available either black, GM part number 12361146, or chrome, GM part number 12363128.
- Página 5 88963227 Piston Asm, (W/Pin) 12499212 Ring Kit, Pstn 88962926 Rod Asm, Conn Kit 88962927 ZZ572/620 and ZZ572/720R Short Block Specifications REV 15JA08 TITLE PART NO. PAGE DATE REVISION AUTH ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11 WHITE 16 POUND BOND PAPER.
- Página 6 Parts ont été conçues, élaborées et mises à l'essai de manière à dépasser vos attentes d'ajustage précis et de fonction. Prière de se reporter à notre catalogue pour trouver le centre de GM Performance Parts agréé le plus près, ou aller sur notre site Web à...
- Página 7 En outre, une telle application pourrait donner lieu à l’annulation de la garantie d’un tel véhicule hors route ou hors autoroute. Chevrolet, Chevy, l’emblème du nœud papillon Chevrolet, General Motors et GM sont tous des marques déposées de la société General Motors.
- Página 8 4. Faire démarrer le moteur et régler le calage initial. Si la configuration de moteur de luxe est utilisée, régler le calage de l’allumage à 15 ° avant le point mort haut (APMH) et le ralenti du moteur à 950 tr/mn (ZZ572/620) ou à...
- Página 9 Le démarreur recommandé par la GM est un mini-démarreur à couple élevé. Ce démarreur développe beaucoup de couple dans un ensemble compact qui offre un dégagement accru pour les systèmes d’échappement et les carters d’huile allongés. Celui-ci est offert en noir, numéro de pièce GM 12361146, ou chromé, numéro de pièce GM 12363128.
- Página 10 88963227 Ensemble de piston (avec axe) 12499212 Trousse de segments de piston 88962926 Trousse d’ensemble de bielle 88962927 ZZ572/620 and ZZ572/720R Short Block Specifications REV 15JA08 TITLE PART NO. PAGE DATE REVISION AUTH ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11 WHITE 16 POUND BOND PAPER.
- Página 11 (12498825) Especificaciones del número de parte 88962927 Gracias por elegir GM Performance Parts como su proveedor de alto rendimiento. GM Performance Parts tiene el compromiso de brindar tecnología de alto desempeño innovadora comprobada que sea verdaderamente más que únicamente rendimiento. GM Performance Parts están diseñadas, desarrolladas y probadas para superar sus expectativas en cuanto a adaptación y funcionalidad.
- Página 12 Además, cualquier aplicación similar podría afectar adversamente la cobertura de la garantía de un vehículo para uso en calles o autopista. Chevrolet, Chevy, el emblema de corbatín de Chevrolet, General Motors y GM son todas marcas comerciales registradas de General Motors Corporation.
- Página 13 Observe la posición del distribuidor antes de la desinstalación. Instale la herramienta de imprimación del aceite, número de parte de GM 12368084. Utilice un barreno de 1/2” para girar la herramienta de imprimación de aceite para motores hacia la derecha por tres minutos. Mientras imprime el motor, pídale a alguien que gire el cigüeñal a la derecha para suministrar aceite a través del motor y a todas las superficies del cojinete...
- Página 14 Motor de arranque: El motor de arranque recomendado por GM es un mini motor de arranque con torque alto. Es un motor de arranque compacto que distribuye suficiente torque en un paquete pequeño, el cual ofrece más espacio para los cárteres de aceite extendidos y sistemas de escape.
- Página 15 88963227 Ensambles de pistones, (con pasador) 12499212 Kit de anillos, pistón 88962926 Ensambles de bielas, kit 88962927 ZZ572/620 and ZZ572/720R Short Block Specifications REV 15JA08 TITLE PART NO. PAGE DATE REVISION AUTH ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11 WHITE 16 POUND BOND PAPER.