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RAMJET 502 Engine 12499121 Specifications
Specifications Part Number 88962910
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. Visit our
website at
www.chevroletperformance.com
for the Chevrolet Performance Parts Authorized Center nearest you.
This publication provides general information on components and procedures that may be useful when installing or
servicing a RAMJET 502 engine. Please read this entire publication before starting work. Also, please verify that all of
the components listed in the package contents section below were in fact shipped in the kit.
The information below is divided into the following sections: package contents, component information, RAMJET 502
engine specifications, installation instructions, additional parts that you may need to purchase, torque specifications,
and service parts list.
The RAMJET 502 engine is a fully assembled engine. This engine is assembled using brand new, premium quality
components. The RAMJET 502 engine is manufactured on current production tooling; consequently you may
encounter dissimilarities between this engine assembly and previous versions of the big block V8. In general, items
such as motor mounts, accessory drives, exhaust manifolds, etc. can be transferred to a RAMJET 502 engine when
installed in a vehicle originally equipped with a big block V8 engine. However, as noted in the following sections,
there may be significant differences in the water pump, oil pan, etc., between a RAMJET 502 engine and an older
big block V8 engine. These differences may require modifications or additional components not included with this
engine. When installing the RAMJET 502 engine in a vehicle not originally equipped with a big block V8, it may be
necessary to adapt or fabricate various components for the cooling, fuel, electrical, and exhaust systems. Due to the
wide variety of vehicles in which this engine can be installed, some procedures and recommendations may not apply
to specific applications.
The RAMJET 502 engine is based on the marine electronic, port fuel injection system, and the Chevrolet
Performance 502/502 crate engine. The RAMJET 502 engine includes an aluminum intake manifold, fully calibrated
Engine Control Module (ECM), wiring harness, all the necessary sensors, distributor, ignition coil, throttle body, fuel
rail, and throttle cable brackets. All the gaskets and attaching hardware required for the components you need to
install are included in the kit as well. This package is assembled using brand new, premium quality components.
The RAMJET operating system is a very advanced fuel injection control system that uses a minimum amount of
inputs to the engine control module (ECM) for ease of installation. Because of this, there are certain operating
conditions that should be understood to ensure proper operation.
For example, due to the variety of applications and uses, this system has no provisions for vehicle speed input,
transmission range input (automatic) or clutch pedal input (manual transmission) to the ECM. If the Throttle Position
Sensor (TPS) is reading a closed throttle with engine running, the engine controller has no way of determining if it is
being driven down the road or idling in Park or Neutral. If the driver operates the engine in a way that pulls the engine
speed below the desired idle, the normal reaction of the control module is try to keep the engine speed above the
minimum RPM by adjusting the Idle Air Control (IAC) and ignition timing.
If the driver continues to operate the vehicle in this "forced low speed" manner, the IAC and spark may continue to
climb until it is at maximum. If the load is suddenly taken away (clutch pedal depressed, shifter moved to neutral), the
engine speed will be above desired idle. At that point the engine speed will begin to decrease until it gets back down
to desired idle speed. To avoid driving under these conditions, shift the transmission to the next lower gear to prevent
"lugging" the engine below the desired idle speed.
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Ramjet 502 Engine
IR 17FE14
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  • Página 1 V8 engine. These differences may require modifications or additional components not included with this engine. When installing the RAMJET 502 engine in a vehicle not originally equipped with a big block V8, it may be necessary to adapt or fabricate various components for the cooling, fuel, electrical, and exhaust systems. Due to the wide variety of vehicles in which this engine can be installed, some procedures and recommendations may not apply to specific applications.
  • Página 2 It constantly looks at the information from various sensors and controls the systems that affect engine performance. The ECM also performs the diagnostic function of the system. It can recognize operational problems and store diagnostic trouble codes, which identify the problem areas to aid the technician in making repairs.
  • Página 3 Observe all safety precautions and warnings in the service manuals when installing a RAMJET 502 engine 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.
  • Página 4 Component Information: Cylinder Heads: The RAMJET 502 engine comes with aluminum cylinder heads, part number 12363390. These cylinder heads are oval port design with 110cc combustion chambers, 2.25” stainless steel intake valves, and 1.88” stainless steel exhaust valves. Intake Manifold: This kit includes a Chevrolet Performance port fuel injection intake manifold designed especially for the RAMJET 502 engine.
  • Página 5 Water Pump: The RAMJET 502 engine comes with an aluminum, short style water pump, part number 19168602. The pump included with this kit has a standard rotation impeller that is used with conventional accessory drives. Some serpentine belt systems require a water pump with a reverse-rotation impeller.
  • Página 6: Installation Instructions

    Modify the harness by separating the B+ wire from the knock sensor wire. This will allow the knock sensor wire to reach the knock sensor. 2. Torque the knock sensor to 16 Nm (12 ft.lbs.). 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 7 Among the items contained in this kit is an oxygen sensor. The oxygen sensor will monitor the exhaust gas and determine the level of richness or leanness of your engine. It will monitor the aggressive, performance oriented fuel tables in the ECM and trim them ever so slightly in order to optimize performance and driveability.
  • Página 8 IAT sensor in the duct near the filter. If you plan on welding in threads, a pipe nipple from your local hardware may facilitate the installation. Additionally, some "snap-in" intake sensor are available in a number of configurations. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 9 13. On your harness you will notice several different grounds. The grounds must be grounded on separate studs on the engine. Failure to use separate ground studs may result in improper engine performance or ECM failure. 14. You will also notice two tachometer outputs from the harness, tach1 is for a standard negative side of the coil driven tach. Tach2 is for new digital tachometers;...
  • Página 10 Accelerator and Throttle Valve (TV) Cable Bracket Installation: The RAMJET 502 engine includes throttle and TV cable brackets that will allow you to utilize the throttle and TV cables in most carbureted vehicles. Both the accelerator and TV cable brackets can be adjusted approximately 1/2” fore and aft, which should provide enough adjustment for most any application.
  • Página 11 13. Do not use synthetic oil for break-in. It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation. In colder regions, a lower viscosity oil may be required for better flow characteristics. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 12 Fuel Pump / Fuel Lines / Fuel Filter: The RAMJET 502 engine does not include a fuel pump. The fuel system in your application must be capable of supplying a minimum of 45 gallons per hour of fuel. The operating pressure of the fuel pump must be within the range of 43 - 55 psi.
  • Página 13 (hilly or flat) that you will most likely be driving in the majority of the time. The RAMJET 502 engine makes peak horsepower at 5100 RPM. A good rule of thumb would be a highway cruising speed that places the engine at an RPM in the range of 60-70% lower than peak.
  • Página 14 Headers: A RAMJET 502 engine should be equipped with a header exhaust system for maximum performance in applications where a nonproduction exhaust system is legal. All of the calibration development and validation testing was done with a header exhaust system installed on our development engines. Installing production style exhaust manifold may increase back pressure and alter the performance of the system.
  • Página 15 RAMJET 502 Engine Torque Specifications: Camshaft retainer bolt/screw 10 ft.lbs. / 13.5 Nm Camshaft sprocket bolt/screw 21 ft.lbs. / 28 Nm Connecting rod nut 70 ft.lbs. / 95 Nm (.009” bolt stretch preferred) Crankshaft balancer bolt 74 ft.lbs. / 100 Nm Crankshaft bearing cap bolt/screw and stud 110 ft.lbs.
  • Página 16 Plug, Engine Block Oil Galley ........444776 Nut, Crankshaft Oil Deflector ........9422297 Plug, Engine Block Oil Galley ........14084945 Balancer Assembly, Crankshaft ........10216339 Plug Assembly, Engine Block Oil Galley ....... 08654382 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 17 Regulator Assembly, Fuel Pressure ......19245527 Gasket, Valve Rocker Arm Cover ......... 14085759 Bolt/Screw, Fuel Pressure Regulator ......11561767 Cap, Valve Rocker Arm Cover Oil Fill ......15681150 Seal Kit, Fuel Pressure Regulator ........ 17113199 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 18 Connector, Relay-Fuel Pump ........15306045 Washer, Distributor Shaft Thrust ........1977937 Relay Assembly, Fuel Pump ......... 12177233 Washer, Distributor Shaft ..........1965864 Connector, Relay-Ignition ..........15306045 Shield, Distributor Ignition Pick Up ....... 10496783 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 19 Chevrolet Performance Parts s'est engagée à offrir une technologie de rendement éprouvée et novatrice qui est réellement... beaucoup plus que de la puissance. Les pièces de Chevrolet Performance Parts ont été conçues, élaborées et mises à l'essai de manière à dépasser vos attentes de réglage précis et de fonction. Visitez notre site Web à...
  • Página 20 Ces caractéristiques techniques ne sont pas destinées à remplacer les pratiques d'entretien complètes et détaillées expliquées dans les manuels de réparation d'usine. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 21 Chevrolet, Chevy, l'emblème Chevrolet, General Motors et Chevrolet sont des marques déposées de la General Motors Company. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 22 1,88". Tubulure d'admission : Ce kit contient une tubulure d'admission à injection de carburant par orifice Chevrolet Performance conçue spécialement pour le moteur RAMJET 502. Ce collecteur d'admission en deux parties est fabriqué avec des bossages pour monter l'ECM, la rampe de carburant, le câble d'accélérateur et les supports de câbles de papillon ainsi que les raccords de dépression.
  • Página 23 0,040 po Ordre d'allumage : 1-8-4-3-6-5-7-2 L'information peut varier selon l'application. Toutes les caractéristiques techniques énumérées sont basées sur les plus récentes données de production disponibles à la date d'impression. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 24 être modifié. Modifier le faisceau en séparant le fin B+ du câble de capteur de détonations. Cela permet que le câble de capteur de détonations atteigne le capteur. 2. Serrer le capteur de détonations à 16 Nm (12 lb pi). 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 25: Sonde De Température

    La pose de la bonde d'échappement se fait par soudage. Si vous êtes pas équipé pour installer la bonde d'échappement, un atelier local ou un centre d'entretien devrait pouvoir le faire pour vous. FIGURE 2 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 26: Plage De Pose Recommandée De La Bonde

    Si c'est le cas, installer le capteur IAT dans le conduit près du filtre. Si l'on prévoit souder dans les filets, se procurer un raccord de tuyau de quincaillerie locale pour faciliter la pose. En outre, certaines sondes de type encliquetables sont disponibles dans différentes configurations. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 27 5. Fixer les extrémités des flexibles de dépression au régulateur de pression de carburant et au servofrein électriques. 6. Brancher le connecteur de faisceau de câbles du capteur MAP au capteur MAP. 7. Brancher la sonde de température d'air d'admission au faisceau de câbles. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 28 Le patin doit se déplacer (rochet) vers le levier quand le levier est tourné jusqu'en position de course. Une fois encore, vérifier la mobilité du câble et recontrôler une fois que le moteur est chaud. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 29 13. Ne pas utiliser d'huile synthétique pour le rodage. Il est conseillé d'utiliser de l'huile moteur synthétique après la deuxième vidange d'huile et le kilométrage recommandé. Dans les régions plus froides, une viscosité inférieure de l'huile peut être nécessaire pour un meilleur écoulement de l'huile. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 30 Ces chicanes permettent à la pompe à essence de disposer de carburant tant que le réservoir en renferme une quantité suffisante. Les chicanes empêchent le carburant de se retrouver sur un seul côté du réservoir lors de virages serrés ou à l’arrière du réservoir durant des accélérations rapides. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 31 À titre d’exemple, avec la boîte de vitesses 4L80E, le rapport de surmultipliée est de 0,75. Pour obtenir un rapport de démultiplication final de 2,74, le calcul est le suivant : 2,74 (rapport de démultiplication final) = 3,65 (rapport d'essieu estimé) 0,75 (rapport D/E trans.) 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 32 Il fournit des informations de capteur en temps réel, des codes d'anomalie de diagnostic et des informations générales sur les systèmes. Pour acheter un outil TechMate, il suffit d’appeler ou d’écrire à : Rinda Technologies Inc. 4563 N. Elston Avenue Chicago, IL 60630 (773) 736-6633 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 33 11 lb po / 15 Nm Boulon/vis de retenue de guide de poussoir de soupape 18 lb pi / 25 Nm Boulon/vis de pompe à eau 30 lb pi / 40 Nm 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 34 Bouchon de canalisation d’huile de bloc-moteur ..11609914 Écrou, déflecteur d’huile de vilebrequin ....... 9422297 Bouchon de canalisation d’huile de bloc-moteur ..444776 Amortisseur de vibrations de torsion ......10216339 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 35 Kit de joint, joint torique, injecteur de carburant ... 19178978 Écrou de culbuteur de soupape ........3896648 Kit de retenue, injecteur de carburant ......17112633 Bille, culbuteur de soupape ......... 12556299 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 36 Axe de pignon d’allumeur ..........456652 Relais de pompe à carburant ........12177233 Rondelle de butée d’arbre d'allumeur ......1977937 Connecteur de relais d’allumage ......... 15306045 Rondelle d’arbre d’allumeur ......... 1965864 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 37 El motor RAMJET 502 está basado en un sistema de inyección de combustible de puerto electrónico marítimo, y el motor armado Chevrolet Performance 502/502. El motor RAMJET 502 incluye un múltiple de admisión de aluminio, Módulo de control del motor (ECM) completamente calibrado, arnés de cableado, todos los sensores necesarios, distribuidor, bobina de ignición, cuerpo de acelerador, riel de combustible, y soportes de cable de...
  • Página 38 ECM y las características de cada modo. No se pretende que estas especificaciones reemplacen las prácticas de servicio completas y detalladas explicadas en los manuales de servicio de fábrica. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 39 Chevrolet, Chevy, el Emblema de Corbatín Chevrolet, General Motors, y Chevrolet son marcas comerciales registradas de General Motors Company. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 40: Descripción

    Múltiple de admisión: Este juego incluye un múltiple de admisión de inyección de combustible de puerto de Chevrolet Performance diseñado especialmente para el motor RAMJET 502. Este múltiple de admisión de dos piezas está fabricado con bujes para montar el ECM, el riel de combustible, el cable del acelerador y los soportes de cable de TV así...
  • Página 41 Orden de explosión: 1-8-4-3-6-5-7-2 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. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 42 Modifique el arnés separando el cable B+ del cable del sensor de detonación. Esto permitirá que el cable del sensor de detonación alcance el sensor de detonación. 2. Apriete el sensor de detonación a 16 Nm (12 pies lb.). 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 43: Tapón De Escape

    La instalación del tapón de escape requiere soldadura. Si no tiene el equipo requerido para instalar el tapón de escape, un taller de silenciadores o taller de servicio local calificado puede completar este paso por usted. FIGURA 2 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 44: Rango De Instalación De Tapón Recomendado

    Si este es el caso, debe instalar el sensor IAT en el ducto cerca del filtro. Si planea soldar las roscas, un niple de tubo de su tienda de hardware local puede facilitar la instalación. Adicionalmente, algunos sensores de admisión "a presión" están disponibles en varias configuraciones. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 45 5. Conecte los extremos de las mangueras de vacío al regulador de presión de combustible y el reforzador del freno de potencia. 6. Conecte el conector del arnés de cableado del sensor MAP a éste. 7. Conecte el sensor de temperatura de aire de admisión al arnés de cableado. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 46 El deslizador debe moverse (con trinquete) hacia la palanca cuando ésta se gire a su posición de viaje completo. De nuevo, revise que el cable se mueva libremente, y vuelva a verificar después que el motor esté caliente. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 47 13. No use aceite sintético para asentamiento. Será adecuado usar aceite de motor sintético después del segundo cambio de aceite recomendado y acumulación de kilometraje. En regiones más frías, se puede requerir un aceite de menor viscosidad para mejores características de flujo. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 48 Los deflectores evitan que todo el combustible se recolecte en un lado del tanque durante vueltas cerradas, o en la parte trasera del tanque durante aceleraciones fuertes. 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 49 En este punto, la relación estimada que determine puede no ser la relación que ya está disponible. Debería revisar sus opciones mayores y menores de relación dependiendo de otros factores indicados anteriormente (preferencia personal y hábitos de conducción, geografía, velocidad general promedio del vehículo, peso final del vehículo, etc...). 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO.
  • Página 50 14 pernos, dos pasacables, y una tapa de orificio de relleno. Las cubiertas de estribo de Corbatín de Chevrolet de cromo están disponibles en una configuración corta número de parte 12342093. Chevrolet Performance también ofrece dos cubiertas de estribo de aluminio fundido diferentes, número de parte 12371244 o 25534323. 12371244 tiene color gris claro como cuando se funde, mientras que 25534323 es una versión recubierta con polvo negro de la misma cubierta.
  • Página 51 11 pies lb. / 15 Nm Perno/tornillo de retenedor de guía de elevador de válvula 18 pies lb. / 25 Nm Perno/tornillo de bomba de agua 30 pies lb. / 40 Nm 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 52 Ensamble de deflector, aceite de cigüeñal ....14097040 Tapón, Galería de aceite de bloque de motor ....11609914 Tuerca, deflector de aceite de cigüeñal ....... 9422297 Tapón, Galería de aceite de bloque de motor ....444776 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 53 Tuerca, Brazo balancín de válvula ........ 3896648 Ensamble de inyector, combustible ......17090919 Bola, Brazo de balancín de válvula ......12556299 Juego de sello, anillo O, inyector de combustible ..19178978 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...
  • Página 54 Conector, Relevador-Bomba de combustible ....15306045 Engrane, Eje de distribuidor ........10493532 Ensamble de relevador, Bomba de combustible ..12177233 Pasador, Engrane de distribuidor ........ 456652 Conector, Relevador-Ignición ........15306045 88962910 Ramjet 502 Engine IR 17FE14 TITLE PART NO. SHEET...

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