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Thank you for choosing Chevrolet Performance Parts as your high performance source. Chevrolet Performance Parts 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 which may be useful when installing or servicing
your crate engine. Please read this entire publication before starting work.
This crate engine is assembled using brand new, premium quality components. It is based off of the Cadillac 2016 Generation
V LT4 small block engine series architecture, and utilize such modern technologies as individual ignition coil per cylinder and
direct fuel injection.
Due to the wide range of small block applications, if you are retrofitting a previous small block application, you may encounter
installation differences between your crate engine assembly and the previous version. These differences may require
modifications or additional components not included with the engine, including cooling, fuel, electrical, and exhaust systems.
Some fabrication work may be required.
The LT4 crate engine require an engine control system which is available from your Chevrolet Performance Parts dealer.
Check with your dealer or on www.chevroletperformance.com for the control system packages that are currently available.
It is not the intent of these specifications to replace the comprehensive and detailed service practices explained in the service
manuals. For information about warranty coverage, please contact your local Chevrolet Performance Parts dealer.
Observe all safety precautions and warnings in the service manuals when installing a crate engine in any vehicle. Wear eye
protection and appropriate protective clothing. When working under or around the vehicle support it securely with jack stands.
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.
This publication is intended to provide information about this crate engine and related components. This manual also describes
procedures and modifications that may be useful during the installation of an LT4 crate engine. It is not intended to replace the
comprehensive service manuals and parts catalogs which cover Chevrolet Performance 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.
Legal and Emissions Information
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.
LT4 Wet Sump Engine
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 GM SPECIFICATIONS.
LT4 Wet Sump Engine
Specifications Par Number 19332621
IR 02JA18
DATE
17AU15
02JA18
19332622
PART NO.
REVISION
Initial Release - Rocko Parker
Revision - Rocko Parker
1
35
SHEET
OF
AUTH
ECA P5E00313
N/A
Publicité
Manuels Connexes pour Chevrolet Performance LT4
Sommaire des Matières pour Chevrolet Performance LT4
- Page 1 This publication is intended to provide information about this crate engine and related components. This manual also describes procedures and modifications that may be useful during the installation of an LT4 crate engine. It is not intended to replace the comprehensive service manuals and parts catalogs which cover Chevrolet Performance engines and components.
- Page 2 The supplied oil fill tube is a one time install part. It has a tab that once installed will not allow the tube to be removed without removing the valve cover. Beauty covers maybe purchased for a 2016 Cadillac CTS-V which cover the valve covers. See figure 2 and 3. Fig. 2 Beauty cover 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE...
- Page 3 Performance engine control kit. A returnless fuel system reduces the internal temperature of the fuel tank by controlling the speed of the fuel pump and not returning hot fuel from the engine to the fuel tank. If using the Chevrolet Performance engine control kit, a pulse width modulation capable fuel pump that delivers 500 kPa (72psi) at 45 gallons per hour is required.
- Page 4 This engine ventilation system design minimizes oil consumption and significantly reduces the potential for oil ingestion during vehicle limit handling maneuvers. The LT4 engine utilizes an integral positive crankcase ventilation (PCV) system which is located in the Valve Lifter Oil Manifold Assembly beneath the Supercharger Assembly. The Valve Lifter Oil Manifold Assembly contains composite oil separating baffles and PCV plumbing.
- Page 5 Intake Manifold/Supercharger Assembly The LT4 Roots-type supercharger is a positive displacement pump that consists of 2 counter-rotating rotors installed into the lower intake manifold housing. The rotors are designed with 4 lobes and a helical twist. The rotors of the supercharger are designed to run at a minimal clearance, not in contact with each other or the housing and are timed to each other by a pair of precision spur gears which are pressed onto the rotor shafts.
- Page 6 The cylinder head air bleed needs to be routed to the highest point in the cooling system. This will assist in removing air from the cylinder heads (Figure. 5). Fig. 5 PUMP OUTLET CYLINDER HEAD AIR BLEED PUMP INLET 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE REVISION...
- Page 7 A worn or misaligned pilot bearing can cause shifting problems and rapid clutch wear. There are two different Chevrolet pilot bearings for the LT4. 14061685 is for a long input shaft transmission and 12557583 is for a short input shaft transmission.
- Page 8 Fig. 8 Evaporative Emissions Valve The evaporative emissions system can be used with the Chevrolet Performance engine control kit, but is not required for proper engine operation. This port must be either plugged or connected to a vapor canister. (Figure 9).
- Page 9 Charge Air Cooling System (LT4) This kit contains a charge air coolant pump. The pump is controlled by the Chevrolet Performance Parts engine control system. The charge air cooling systems function is to reduce the temperature of the air charge that is heated during the supercharging process which improves the efficiency and performance of the powertrain.
- Page 10 Camshaft:......................Hydraulic roller tappet Lift: ........................0.502” intake, 0.561” exhaust Duration:......................188° intake, 223° exhaust @.050” tappet lift Centerline:......................120° LSA Rocker Arm Ratio:..................... 1.81:1 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE...
- Page 11 Spark Plug Gap:....................0.037–0.043” (0.95–1.10 mm) Firing Order:......................1-8-7-2-6-5-4-3 Information may vary with application. All specifications listed are based on the latest production information available at the time of printing. 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET...
- Page 12 L'assemblage de ce moteur en caisse est effectué en utilisant des composants neufs de première qualité. Il est basé sur l'architecture de série moteur à bloc compact LT4 de Cadillac 2016 et utilise des technologies de pointe, comme la bobine d'allumage individuelle par cylindre et l'injection de carburant direct.
- Page 13 Des couvercles esthétiques peuvent être achetés pour la Cadillac CTS-V 2016 pour couvrir les couvre-culasses. Voir les figures 2 et 3. Fig. 2 Couvercle esthétique 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET...
- Page 14 Ces paramètres ne sont pas connus lors de la vente de la trousse de contrôleur de moteur Chevrolet Performance. En raison de ces paramètres inconnus, ainsi que de la nécessité de mettre au point les supports de moteur et le système d'échappement pour un fonctionnement en mode V8 est en mode V4.
- Page 15 Le moteur LT4 utilise un système de recyclage des gaz de carter (PCV) intégré situé dans l'ensemble collecteur d'huile de poussoir de soupape, sous l'ensemble compresseur d'alimentation. L'ensemble collecteur d'huile de poussoir de soupape comptiez des déflecteurs de séparation d'huile en composite et une tuyauterie PCV.
- Page 16 Ce moteur a la capacité de varier la position de l'arbre à cames par rapport à la position du piston. Si vous choisissez d'utiliser la trousse de contrôleur de moteur Chevrolet Performance, ce système fait alors varier la distribution de l'arbre à cames pour améliorer les émissions et l'économie de carburant, tout en produisant une grande puissance.
- Page 17 à cames (CMP) pour diriger l'huile sous pression dans le positionneur CMP afin de réguler le calage distribution des soupapes. Refroidissement du groupe motopropulseur Type de liquide de refroidissement Mélange 40/60 d'eau propre potable et de liquide refroidisseur DEX-COOL® seulement. 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE...
- Page 18 On peut acheter le flexible 84214922 pour obtenir les raccords rapides de sortie et d'admission du système de chauffage en cas d'installation sur mesure (figure 6). Fig. 6 ENSEMBLE FLEXIBLE DE CHAUFFAGE 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE...
- Page 19 Le moteur LT4 Gen-V est doté du refroidissement de piston par pulvérisation d'huile, dans lequel huit gicleurs d'huile dans le bloc-moteur inondent le dessous de chaque piston et la périphérie des parois de cylindre avec une couche supplémentaire d'huile de refroidissement et de réduction de frottement.
- Page 20 Il y a un orifice de dépression qui peut être utilisé pour les freins à dépression. Il doit être raccordé au servofrein ou bouché; voir la figure 10. Fig. 10 Orifice de dépression 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET...
- Page 21 Cette trousse contient une pompe de liquide de refroidissement d'air de suralimentation. La pompe est commandée par le système de commande du moteur Chevrolet Performance Parts. La fonction des systèmes de refroidissement d'air de suralimentation est de réduire la température de la charge d'air chauffée pendant le processus de suralimentation qui améliore l'efficacité...
- Page 22 Vidanger l'huile et remplacer le filtre. Vérifier l'huile et le filtre à huile de nouveau afin de repérer toute particule étrangère pour s'assurer que le moteur fonctionne correctement. Caractéristiques techniques du moteur LT4 : Type :......................V8 à bloc compact de 5e génération Cylindrée :....................
- Page 23 Écartement des électrodes :............... 0,037 po à 0,043 po (0,95-1,10 mm) Ordre d'allumage :..................1-8-7-2-6-5-4-3 L'information peut varier selon l'application. Toutes les spécifications énumérées sont basées sur les plus récentes données de production disponibles à la date d'impression 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET...
- Page 24 Este motor armado se ensambla utilizando componentes nuevos de primera calidad. Se basa en la arquitectura de la serie de motor de bloque pequeño LT4 Generación V de Cadillac 2016, y utiliza tecnologías modernas como bobina de ignición individual por cilindro e inyección directa de combustible.
- Page 25 Las cubiertas de apariencia se pueden adquirir para un vehículo Cadillac CTS-V 2016 que cubre las cubiertas de válvula. Vea la figura 2 y 3. Fig. 2 Cubierta de apariencia 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE...
- Page 26 V8 como V4. El juego de control de motor Chevrolet Performance desactiva esta función. El motor no se ha cambiado, así que el hardware de desactivación de cilindro todavía está...
- Page 27 El diseño del sistema de ventilación del motor minimiza el consumo de aceite y reduce de manera significativa el potencial de ingestión de aceite durante maniobras de manejo de límite del vehículo. El motor LT4 utiliza un sistema de ventilación positiva del cárter (PCV) integral que está ubicado en el Ensamble del múltiple de aceite del elevador de válvula debajo del Ensamble del súpercargador.
- Page 28 Ensamble de múltiple de admisión/Súpercargador El súpercargador tipo LT4 Roots es una bomba de desplazamiento positiva que consiste en 2 rotores en contra-rotación instalados en el alojamiento del múltiple de admisión inferior. Los rotores están diseñados con 4 lóbulos y un giro helicoidal.
- Page 29 CMP dirigiendo el aceite presurizado dentro del actuador de CMP para controlar la sincronización de la válvula. Enfriamiento de tren motriz Tipo de refrigerante Mezcla 40/60 de refrigerante/agua potable limpia y uso de Refrigerante DEX-COOL® únicamente. 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO. SHEET DATE...
- Page 30 El refrigerante del motor se debe enrutar a la porción inferior del radiador, o la manguera de entrada de la bomba de refrigerante. En calor entonces se retira por el radiador del motor. 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO.
- Page 31 Spanish El motor LT4 Generación V presenta enfriamiento de pistón de rocío de aceite, en el que ocho chorros de rocío de aceite en el bloque del motor empapan la parte inferior de cada pistón y la pared del cilindro adyacente con una capa adicional de aceite de enfriamiento y reducción de fricción.
- Page 32 Válvula de emisiones de evaporación El sistema de emisiones de evaporación se puede usar con el juego de control de motor Chevrolet Performance, pero no se requiere para la operación correcta del motor. Este puerto se debe tapar o conectar a un depósito de vapor. (Figura 9) Fig.
- Page 33 El motor se debe conducir con diversas cargas y en diferentes condiciones las primeras 30 millas o una hora sin acelerador completamente abierto (WOT) o sin aceleraciones sostenidas a RPM altas. 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO.
- Page 34 Cambie el aceite y el filtro. Nuevamente, revise si el aceite y filtro de aceite tienen partículas extrañas para asegurar que el motor funcione correctamente. Especificaciones del motor LT4: Tipo:......................Gen V Bloque pequeño V8 Desplazamiento:..................376 pulgadas cúbicas (6.2 litros).
- Page 35 Orden de explosión:..................1-8-7-2-6-5-4-3 La información puede variar según la aplicación. Todas las especificaciones enumeradas están basadas en la información sobre la última producción disponible al momento de la impresión. 19332622 LT4 Wet Sump Engine IR 02JA18 TITLE PART NO.