LT1 Performance Crate Engine - Chevrolet

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LT1 Performance Crate EngineThank you for choosing Chevrolet Performance Parts as your high performance source. Chevrolet Performance Parts is committedto providing proven, innovative performance technology that is truly. more than just power. Chevrolet Performance Parts areengineered, developed and tested to exceed your expectations for fit and function. Please refer to our catalog for the ChevroletPerformance 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 servicingyour 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 Chevrolet Generation V LT1Series architecture, and utilize such modern technologies as individual ignition coil per cylinder and direct fuel injection. Due tothe wide range of small block applications, if you are retrofitting a previous small block application, you may encounter installationdifferences between your crate engine assembly and the previous version. These differences may require modifications oradditional components not included with the engine, including cooling, fuel, electrical, and exhaust systems. Some fabrication workmay be required.The LT1 crate engine require an engine control system which is available from your Chevrolet Performance Parts dealer. Checkwith your dealer or on www.chevroletperformance.com for the control system packages that are currently available. It is not theintent of these specifications to replace the comprehensive and detailed service practices explained in the Chevrolet servicemanuals. 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 eyeprotection and appropriate protective clothing. When working under or around the vehicle support it securely with jack stands. Useonly 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 performany part of this conversion safely, this work should be done by a professional. This publication is intended to provide informationabout this crate engine and related components. This manual also describes procedures and modifications that may be usefulduring the installation of an LT1 crate engine system. It is not intended to replace the comprehensive service manuals and partscatalogs which cover Chevrolet Performance engines and components. Rather, it is designed to provide supplemental informationin 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 InformationFederal law restricts the removal of any part of a federally required emission control system on motorvehicles. Further, many states have enacted laws which prohibit tampering with or modifying any requiredemission or noise control system. Vehicles which are not operated on public highways are generallyexempt from most regulations, as are some special interest and pre-emission vehicles. The reader isstrongly urged to check all applicable local and state laws. Many of the parts described or listed in thismanual are merchandised for off-highway application only, and are tagged with the “Special Parts Notice”reproduced here:Special Parts NoticeThis part has been specifically designed for Off-Highway application only. Since the installation of this partmay either impair your vehicle’s emission control performance or be uncertified under current Motor VehicleSafety Standards, it should not be installed in a vehicle used on any street or highway. Additionally, any suchapplication could adversely affect the warranty coverage of such an on-street or highway vehicle.TITLEPerformance Crate EngineALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.IR 02MY18PART NO.19416593DATE02MY18SHEET1OF27REVISIONInitial Release - Rocko ParkerAUTHN/A

Kit parts listDescriptionPRODUCTION 2019 ENGINECAP-OIL FILLTUBE, OIL FILHOSE ASM-ENG OIL CLR COOLBOLT/SCREW,OIL CLR COOL HOSEINSTRUCTION SHEETSQuantity111111INSTALLATION INSTRUCTIONS:Engine installationThis crate engine is assembled using brand new, premium quality components. It is based off of the Chevrolet Generation V LT1Series architecture from a 2019 Chevrolet Camaro, and utilize such modern technologies as individual ignition coil per cylinderand 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 differencesmay require modifications or additional components not included with the engine, including cooling, fuel, electrical, and exhaustsystems. Some fabrication work may be required.Oil Fill Cap and TubeThis kit is supplied with the engine oil fill tube and cap.OIL FILL TUBEAND CAPCylinder Deactivation - Not Used With Chevrolet Performance Engine Control KitThis engine is used in the Generation 6 Camaro. In production, to provide maximum fuel economy under light load drivingconditions, the engine control module (ECM) will command the cylinder deactivation system on to deactivate engine cylinders1, 7, 6, and 4, switching to a V4 mode. The engine will operate on 8 cylinders, or V8 mode, during engine starting, engine idling,and medium to heavy throttle applications. This system requires many inputs (weight of vehicle, tire size, final drive ratio, etc.)to work properly. These parameters are unknown when selling the Chevrolet Performance engine controller kit. Due to theseunknown parameters as well as the need to tune the motor mounts and exhaust system for operation in both V8 and V4 modes.The Chevrolet Performance engine control kit disables this feature. The engine has not been changed, so cylinder deactivationhardware is still present.Ignition SystemThe Gen-V has an advanced 58X crankshaft position encoder to ensure that ignition timing is accurate throughout its operatingrange. The 58X crankshaft ring and sensor provide more immediate, accurate information on the crankshaft’s position duringrotation. This allows the ECM to adjust ignition timing with greater precision, which optimizes performance and economy. Enginestarting is also more consistent in all operating conditions. In conjunction with 58X crankshaft timing, the Gen-V applies thelatest digital cam-timing technology. The cam sensor is located in the front engine cover, and it reads a 4X sensor target on thecamshaft phaser rotor which is attached to the front end of the camshaft. The target ring has four equally spaced segments thatcommunicate the camshaft’s position more quickly and accurately than previous systems with a single segment. The dual 58X/4Xmeasurement ensures extremely accurate timing for the life of the engine. Moreover, it provides an effective backup system in theevent one sensor fails. Air Induction Humidity Sensor: This new feature ensures optimal combustion efficiency, regardless of thesurrounding air’s humidity. Coil-on-Plug Ignition: The Gen-V’s individual coil-near-plug ignition features advanced coils that arecompact and mounted on the rocker covers, although they are positioned differently than on Gen-IV engine. An individual coil forTITLEPerformance Crate EngineALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.IR 02MY18PART NO.19416593DATE02MY18SHEET2OF27REVISIONInitial Release - Rocko ParkerAUTHN/A

each spark plug delivers maximum voltage and consistent spark density, with no variation between cylinders. Iridium-Tip SparkPlugs: The spark plugs have an iridium electrode tip and an iridium core in the conductor, offering higher internal resistance whilemaintaining optimal spark density over its useful life. The electrode design improves combustion efficiency.Fuel SystemLow Pressure (Fuel Tank to Engine)The production system uses a return less variable flow/pressure system that has been incorporated in the Chevrolet Performanceengine control kit. A return less fuel system reduces the internal temperature of the fuel tank by controlling the speed of the fuelpump and not returning hot fuel from the engine to the fuel tank. The engine control kit included Fuel Pump Power Module, toregulate fuel pressure.FUEL SUPPLY TUBEHigh Pressure (On Engine)The high fuel pressure necessary for direct injection is supplied by the high pressure fuel pump. The high pressure fuel pump ismounted on the rear of the engine under the intake manifold and is driven by a three-lobe cam on the camshaft. This high pressurefuel pump also regulates the fuel pressure using an actuator in the form of an internal solenoid-controlled valve that is controlled bythe ECM.Positive Crankcase Ventilation (PCV) SystemA closed crankcase ventilation system is used in order to provide a more complete scavenging of the crankcase vapors. Freshair from the air filtration system (air cleaner) is supplied to the crankcase, mixed with blow-by gases, and then passed through acrankcase ventilation valve into the intake manifold. There are two ports, one each per valve cover that need to be connected tothe engine oil separator canister located on the right front of the engine. Then the third tube need to be routed to the air filtrationsystem (air cleaner). This connection needs to be between the Mass Air Flow meter (MAF) and the engine throttle body. The air forPCV needs to be measured by the MAF, in order for proper engine operation. See below image for proper installation. Reference2019 Camaro LT1 for current part numbers.PCV HOSEROUTINGCONNECT TO CLEANSIDE OF AIR CLEANERTITLEPerformance Crate EngineALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.IR 02MY18PART NO.19416593DATE02MY18SHEET3OF27REVISIONInitial Release - Rocko ParkerAUTHN/A

Variable Camshaft TimingThis engine has the ability to vary the camshaft position versus the piston position. If you chose to use the Chevrolet Performanceengine controller kit, then it will vary camshaft timing to improve emission and fuel economy, while still producing great power. Atidle, for example, the cam is at the full advanced position, allowing exceptionally smooth idling. Under other conditions, the phaseradjusts to deliver optimal valve timing for performance, drivability and fuel economy. At high rpm it may retard timing to maximizeairflow through the engine and increase horsepower. At low rpm it can advance timing to increase torque. Under a light loads, itcan retard timing at all engine speeds to improve fuel economy. A vane-type phaser is installed on the front of the camshaft tochange its angular orientation relative to the sprocket, thereby adjusting the timing of valve operation on the fly. It is a dual-equalcam phasing system that adjusts camshaft timing at the same rate for both intake and exhaust valves. The system allows lineardelivery of torque, with near-peak levels over a broad rpm range, and high specific output (horsepower per liter of displacement)without sacrificing overall engine response, or drivability. It also provides another effective tool for controlling exhaust emissions.Engine Oil Pump SystemEngine lubrication is supplied by a variable displacement two-stage vane-type oil pump assembly. An oil control solenoid valve,controlled by the ECM, mounted to the oil pump provides two stage functionality. The oil pump is mounted on the front of theengine block and driven directly by the crankshaft sprocket. The pump rotor and vanes rotate and draw oil from the oil pan sumpthrough a pick-up screen and pipe. The oil is pressurized as it passes through the pump and is sent through the engine block oilgalleries. The variable pressure/flow oil pump must be controlled by the ECM in order to maintain proper lubrication and minimizeexcessive oil delivery to the cylinder heads and PCV system. There are several devices on the LT1 that use oil pressure tomaintain proper functionality. The ECM controls engine oil pressure and flow for oil spray piston cooling, variable valve timing,cylinder deactivation along with crankshaft and camshaft bearing cooling. The default mode for the oil pump is high flow and highpressure. This can lead to excessive oil consumption thru the PCV system.The LT1 Gen-V engine feature oil-spray piston cooling, in which eight oil-spraying jets in the engine block drench the undersideof each piston and the surrounding cylinder wall with an extra layer of cooling, friction-reducing oil. The oil spray reduces pistontemperature, promoting extreme output and long-term durability. The extra layer of oil on the cylinder walls and wristpin alsodampens noise originating from the pistons.Powertrain CoolingCoolant Type40/60 coolant/water mixture of clean, drinkable water and use only DEX-COOL Coolant.Engine Cooling SystemA surge tank is recommended for removing air from the engine coolant, but as long as the radiator or surge tank is the highestpoint in the system, then air will be evacuated from the coolant. The highest point, meaning that either the radiator or the surgetank have a portion higher than the top of the cylinder heads. If they are not, then air can be trapped within the cylinder heads andcause portions of the cylinder heads to overheat, which will be detrimental to engine performance and longevity. Coolant is drawnfrom the radiator outlet and into the water pump inlet by the water pump. Some coolant will then be pumped from the water pump,to the heater core, then back to the water pump. This provides the passenger compartment with heat and defrost.Caution: Never block off the heater ports at the coolant pump. If no heater is desired, loop the inlet port to the outlet portat the coolant pump. If blocked, the system will not operate properly and overheating of the engine will occur.Coolant is also pumped through the water pump outlet and into the engine block. In the engine block, the coolant circulatesthrough the water jackets surrounding the cylinders where it absorbs heat. The coolant is then forced through the cylinder headgasket openings and into the cylinder heads. In the cylinder heads, the coolant flows through the water jackets surrounding thecombustion chambers and valve seats, where it absorbs additional heat. From the cylinder heads, the coolant is then forced tothe thermostat. The flow of coolant will either be stopped at the thermostat until the engine is warmed, or it will flow through thethermostat and into the radiator where it is cooled and the coolant cycle is completed. The cylinder head air bleed needs to berouted to the highest point in the cooling system. This will assist in removing air from the cylinder heads.TITLEPerformance Crate EngineALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.IR 02MY18PART NO.19416593DATE02MY18SHEET4OF27REVISIONInitial Release - Rocko ParkerAUTHN/A

PUMP OUTLETCYLINDER HEAD AIR BLEED(SMALL PIPE)PUMP INLETHEATER INLET PIPEHEATER OUTLET PIPEEngine Oil CoolingThe engine as delivered comes with a liquid to liquid engine oil cooler. Engine oil is pumped thru the cooler and engine coolant ispumped thru the cooler, to transfer the engine oil heat into the engine coolant. The engine coolant should route to the lower portionof the radiator, or inlet hose of the coolant pump. Heat is then removed by the engine radiator. Reference the 2019 Camaro LT1 foradditional parts.Cooler hose andattachment boltAttach to lower radiator hosefor proper coolant flowEvaporative Emissions ValveThe evaporative emissions system can be used with the Chevrolet Performance engine control kit, but is not required for properengine operation. This port must be either plugged or connected to a vapor canister.TITLEPerformance Crate EngineALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.IR 02MY18PART NO.19416593DATE02MY18SHEET5OF27REVISIONInitial Release - Rocko ParkerAUTHN/A

CONNECT TO EVAP CANISTEREVAP HOSEPilot Bearing (if using a manual transmission)You must install a pilot bearing in the rear of the crankshaft, if the engine will be used with a manual transmission. The pilotbearing aligns the transmission input shaft with the crankshaft centerline. A worn or misaligned pilot bearing can cause shiftingproblems and rapid clutch wear. There are two different Chevrolet pilot bearings for the LT1. 14061685 is for a long input shafttransmission and 12557583 is for a short input shaft transmission. Verify fit prior to installing the transmission or damage will occur.Brake vacuum portThe rear plug can be removed to connect a vacuum hose for vacuum accessories. Reference the 2019 Camaro LT1 for additionalparts.VACUUM PORT FORBRAKE BOOSTERStarter MotorA starter motor is not provided with the engine. The following parts are designed for the LT1 starting system and may assist withyour installation. Please reference a 2019 Camaro with a LT1 engine for current part numbers.HEAT SHIELDAND BOLTSENGINE STARTER MOTORAND BOLTSTITLEPerformance Crate EngineALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.IR 02MY18PART NO.19416593DATE02MY18SHEET6OF27REVISIONInitial Release - Rocko ParkerAUTHN/A

Front Accessory Drive KitFront accessory drive kit can be purchased thru your Chevrolet Performance Dealer. Please refer to the Chevrolet PerformanceParts catalog.Valve cover noise insulatorsValve cover insulators can be purchase for your installation. Please refer to a 2019 Chevrolet Camaro for correct part numbers.VALVE COVER INSULATORSLower exhaust manifold heat shieldsLower exhaust heat shields can be purchase for your installation. Please refer to a 2019 Chevrolet Camaro for correct partnumbers.LOWER EXHAUSTMANIFOLD HEAT SHIELDSStart-up and Break-in ProceduresUse only engine oil licensed to the dexos1 specification of the proper SAE viscosity grade. AC Delco dexos1 Synthetic Blend isrecommended. For track events or competitive driving, use Mobil 1 15W-50 engine oil.Safety first, if the vehicle is on the ground, be sure the park brake is set, the wheels are chocked and the car cannot fall into gear.Verify everything is installed properly and nothing was missed.1. This engine assembly needs to be filled with oil. After installing the engine, ensure the crankcase has been filled with theappropriate motor oil to the recommended oil fill level on the dipstick. This crate engine require a special oil meeting dexos1.Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.The engine should be primed with oil before starting. The use of Kent-Moore engine preluber kit J45299 is the preferred processfor priming.J45299 Engine Prelubera)b)c)d)TITLERemove the engine oil filter, and fill with clean engine oil.Install the oil f

about this crate engine and related components. This manual also describes procedures and modifications that may be useful during the installation of an LT1 crate engine system. It is not intended to replace the comprehensive service manuals and parts catalogs which cover Chevrolet Performance engines and components.