Chevrolet 19244108, Performance 19244099, Performance LS9 Specifications
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LS9 Crate Engine (19244099) Specications
Specications Part Number 19244108
Thank you for choosing Chevrolet Performance as your high performance source. Chevrolet Performance 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 t and function. Please refer to our catalog for the Chevrolet Performance
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
an LS9 Crate engine. Please read this entire publication before starting work.
This LS9 Crate engine is assembled using brand new, premium quality components. Due to the wide range of engine applications,
if you are retrotting a previous application, you may encounter installation differences between the LS9 crate engine assembly
and the previous engine. These differences may require modications or additional components not included with the LS9 engine,
including cooling, fuel, electrical, and exhaust systems. Some fabrication work may be required.
It is not the intent of these specications to replace the comprehensive and detailed service practices explained in the GM service
manuals. Reference a service manual for a 2010 - 2013 Chevrolet Corvette (LS9) for any additional information not included in this
specication.
For information about warranty coverage, please contact your local Chevrolet Performance dealer.
Observe all safety precautions and warnings in the service manuals when installing this LS9 crate engine in any vehicle. Wear eye
protection and appropriate protective clothing. When working under or around the vehicle support it securely with jackstands. Use
only the proper tools. Exercise extreme caution when working with ammable, 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.
Legal and Emissions Information
This publication is intended to provide information about the LS9 crate engine and related components. This manual also
describes procedures and modications that may be useful during the installation of an LS9 crate engine. It is not intended
to replace the comprehensive service manuals and parts catalogs which cover General Motors 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 specically 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 specically designed for Off-Highway application only. Since the installation of this part may either impair
your vehicle’s emission control performance or be uncertied 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.
The information contained in this publication is presented without any warranty. All the risk for its use is entirely assumed by the user.
Specic component design, mechanical procedures, and the qualications 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.
Chevrolet, the Chevrolet Bow Tie Emblem, General Motors, and GM are all registered trademarks of the General Motors Corporation.
Chevy is a trademark of the General Motors Company.
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driveability and a smooth idle. Under this system, fuel pressure
of 87 psi is delivered at high RPM (above 5200 RPM) and
high throttle operation to provide adequate fuel ow. Pressure
of 60 psi below 1500 RPM for best idle stability and quality.
Additionally, the fuel system must be capable of owing 75 gph
at 87 psi. It is critical that constant 75 gph of fuel at 87 psi
be available at high RPM / high throttle operating ranges or
performance and/or engine durability will be adversely affected.
Oil System:
The LS9 Crate Engine is congured as a dry sump oiling
system (see diagram below). A remote oil tank and appropriate
oil lines are required for this type of installation (the production
Corvette oil tank is GM part number 12629421 and is shown
in the diagram). Chevrolet Performance p/n 25534412 is an
adapter kit to allow use of AN -12 hoses at the oil pan. Engine
lubrication is supplied by a gerotor type oil pump assembly.
The oil pump assembly consists of 2 pump housings, 2 separate
gear sets, and 1 pressure relief valve. The front or forward gear
set is the secondary pump (15). The rear or rearward gear set
is the primary pump (14). The pump assembly is mounted at
the front of the engine and driven directly by the crankshaft
sprocket. The primary pump (14) gears rotate and draw oil from
the engine oil tank (3) through the oil tank screen (18). The oil
is pressurized as it passes through the primary pump and is
sent through the engine block lower oil gallery. Contained within
the primary pump is a pressure relief valve (13) that maintains
oil pressure within a specied range. Pressurized oil is directed
through the engine block lower oil gallery to the full ow oil
lter (10) where harmful contaminants are removed. A bypass
valve is incorporated into the oil lter, which permits oil ow in
the event the lter becomes restricted. Oil exits the oil lter and
is then directed to the external oil cooler (1). A bypass valve (9)
is incorporated into the oil cooler assembly in the event oil ow
within the cooler is restricted. Oil returns from the oil cooler and
is directed to the upper main oil galleries (6). Oil from the left
upper oil gallery is directed to the crankshaft bearings (16),
valve lifters 1, 3, 5, and 7, camshaft bearings (17), and piston
oil nozzles 1, 3, 5, and 7. Oil from the right upper oil gallery is
directed to the valve lifters 2, 4, 6, and 8 and piston oil nozzles
2, 4, 6, and 8. The piston oil nozzle assemblies are designed to
provide oil to the bottom side of the piston for cooling purposes.
The piston oil nozzles have an internal check ball that is held
in the normally closed position by the spring until system oil
pressure exceeds 20.7 kPa (43.5 psi). Oil exits the valve lifters
and is then pumped through the pushrods to lubricate the valve
rocker arms and valve stems. Oil returns to the oil pan (11),
where the secondary pump (15) draws oil through a oil pump
screen (12). The secondary pump (15) returns oil to the engine
oil tank (3). Incorporated within the engine oil tank assembly
are the oil level indicator (4), oil ll cap (5), oil temperature
sensor (2), positive crankcase ventilation (PCV) fresh air port,
and a serviceable oil pump screen (18). The engine oil pressure
sensor (8) is located at the top rear of the engine assembly.
Package contents:
Item Description Quantity
GM Part
Number
1 Engine Assembly 1 19244099
2 Engine Instructions 1 19244108
3 Pump Intercooler 1 20945282
Technical Information and Operational Requirements:
Supercharger/Intercooler System:
The LS9 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.
The rotors are supported at each end by self-lubricating nonserviceable bearings. The drive belt pulley is pressed onto
the input shaft. The input shaft is coupled to the rotor shaft. Both
the belt pulley and torsional isolator are also non-serviceable.
The cover assembly has an integrated intercooler.
The intercooler uses conventional coolant and must be
separate from the engine cooling system. The intercooler
assembly includes the cover, two charge air coolers/heat
exchangers, a water manifold assembly, two service bleed ports,
a factory coolant ll port, and a variety of sensors to monitor
air temperature and pressure. The water manifold, located at
the front of cover transfers coolant to the cover via four internal
transfer tubes. The transfer tubes and water manifold are sealed
with O-rings and press-in-place seals. Coolant enters the inlet
port of the water manifold assembly, is directed into and through
the two charge air coolers/heat exchangers, and exits back
into the water manifold. Coolant then exits the water manifold
outlet port.
An intercooler cooling system is required to ensure that heat
can be removed from the coolant. The system must include
appropriately sized lines, radiator, and pump (Provided
pump ows a minimum 5.5 gallons per minute ow rate
recommended) to ensure the coolant temperature remains in
an acceptable range, especially during high boost operating
ranges (i.e. heavy accelerations, high throttle positions,
etc). For optimal performance, it is recommended that
the coolant temperature be kept below 95 degrees F at
the intercooler inlet. It is critical that this temperature be
kept below 175 degrees F for safe engine operation. Use of
production components is recommended whenever possible,
a list of these parts is included below.
Fuel System:
The production LS9 application operates with a variable fuel
pressure system to allow for best performance and driveability.
By varying the fuel pressure over the operating range,
the required high RPM / high throttle fuel ow can be achieved
while still providing the ability to maintain excellent mid-range
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Engine Control System
An engine control system is required to operate the LS9 Crate
Engine. Check with your Chevrolet Performance dealer or
www.chevroletperformance.com for the Chevrolet Performance
control system #19299462.
Additional parts that are needed:
Starter
The LS9 crate engine does not include a starter. GM part
number 89017847 is matched to this application and is
recommended. See your Chevrolet Performance dealer
for details.
Air Induction
A high-quality, high-ow/low restriction air lter/cleaner should
be used to protect the engine. Additionally, your engine control
system may have recommendations for air cleaners and intake
systems for best performance. Chevrolet Performance universal
induction kit 19301246 is available.
Start-up and Break-in Procedures
Safety rst. If the vehicle is on the ground, be sure
the emergency 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 lled with oil. After
installing the engine, ensure the oil system has been lled
with the appropriate motor oil to the recommended oil ll
level. The LS9 crate engine requires a special oil meeting
GM Standard GM4718M (this will be specied on the oil
label). Dexos 1 is one such recommended oil. Other oils
meeting this standard may be identied as synthetic.
However, not all synthetic oils will meet this GM standard.
Look for and use only an oil that meets GM Standard
GM4718M. If using GM12629421 oil tank, make sure
that the oil level falls within the cross hatched area on
the dipstick once the oil is warm. Also check and ll as
required any other necessary uids such as coolant, power
steering uid, etc.
2. This engine MUST be primed with oil before starting.
The use of Kent-Moore engine preluber kit J45299 is
the preferred process for priming.
Note: A constant and continuous ow of clean engine oil is
required in order to properly prime the engine. Be sure to
use approved engine oil, as specied.
Main Pressure
Suction
Return to Oil Tank
1. Engine Oil Tank 11. Oil Pan Sump
2. Oil Fill Cap 12. Oil Pump Screen
3. Oil Level Indicator 13.
Pressure Relief Valve –
Oil Pump
4. Piston Oil Nozzle 14. Oil Pump – Primary
5.
Upper Main Oil
Galleries
15. Oil Pump – Secondary
6. Valve Lifters 16. Crankshaft Bearings
7. Oil Pressure Sensor 17. Camshaft Bearings
8.
Bypass Valve – Oil
Cooler
18. Oil Tank Screen
9. Oil Filter 19. Oil Temperature Sensor
10. Engine Oil Cooler
Accessory Drive
The LS9 Crate Engine requires an accessory drive system.
Chevrolet Performance kit #19243524 includes all of
the LS9 Corvette accessory drive components, see
www.chevrolet performance.com for list of individual
components.
Oil Out
Oil In
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6. Pump the handle on the J45299 preluber in order to ow
a minimum of 1-1.9 liters (1-2 quarts) engine oil. Observe
the ow of engine oil through the exible hose and into
the engine assembly. The engine will be primed after
a small amount of pressure change is seen on the in car
oil pressure gauge while pumping J45299.
7. Close the valve and remove the exible hose and adapter
from the engine.
8. Apply approved thread sealer and Install the oil gallery plug
to the engine and tighten to 60 N•m (44 lb ft).
Top-off the engine oil tank to the proper level.
3. Once the engine control system has been disconnected, crank
the engine using the starter for 10 seconds and check for oil
pressure. If no pressure is indicated, wait 30 seconds and crank
again for 10 seconds. Repeat this process until oil pressure is
indicated on the gauge.
4. Reconnect the engine control system. Start the engine and
listen for any unusual noises. If no unusual noises are noted, run
the engine at approximately 1000 RPM until normal operating
temperature is reached.
5. When possible, you should always allow the engine to warm
up prior to driving. It is a good practice to allow the oil sump
and water temperature to reach 180°F before towing heavy
loads or performing hard acceleration runs.
6. The engine should be driven at varying loads and conditions
for the rst 30 miles or one hour without wide open throttle
(WOT) or sustained high RPM accelerations.
7. Run ve or six medium throttle (50%) accelerations to about
4000 RPM and back to idle (0% throttle) in gear.
8. Run two or three hard throttle (WOT 100%) accelerations to
about 4000 RPM and back to idle (0% throttle) in gear.
9. Change the oil and lter. Replace the oil per the specication
in step 1, and replace the lter with a new UPF48R AC Delco
oil lter. Inspect the oil and the oil lter for any foreign particles
to ensure that the engine is functioning properly.
10. Drive the next 500 miles (12 to 15 engine hours) under normal
conditions. Do not run the engine at its maximum rated engine
speed. Also, do not expose the engine to extended periods
of high load.
11. Change the oil and lter. Again, inspect the oil and oil lter for
any foreign particles to ensure that the engine is functioning
properly.
1. Remove the engine oil lter, and ll with clean engine oil.
2. Install the oil lter and tighten.
3. Locate and remove the engine block left front oil gallery
plug (1).
4. Install the M16 x 1.5 adapter P/N 509375 J 45299 Engine
Preluber.
5. Install the exible hose to the adapter and open the valve.
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LS9 Engine Specications
Type ................................................. 6.2L Gen IV Small Block V8
Displacement ..................................................... 376 cubic inches
Bore x Stroke .............................................4.065 inch x 3.62 inch
Compression ........................................................................9.1:1
Supercharger Boost Ratio ..................................................10.5:1
Block ..................Cast aluminum, six bolt cross-bolted main caps
Cylinder Head ................................Cast aluminum rectangle port
Valve Diameter (Intake/Exhaust) ............................ 2.16”/1.59”
Chamber Volume .................................................................. 68cc
Crankshaft ............................... Forged Steel, internally balanced
Connecting Rods ................................................Forged Titanium
Pistons ..............................................................Forged aluminum
Camshaft ...................................................Hydraulic roller tappet
Lift ................................................... 562” intake, .558” exhaust
Duration .............. 211° intake, 230° exhaust @.050” tappet lift
Rocker Arm Ratio ................................................................1.7:1
Oil Pressure (Minimum, with hot oil) ............ 6 psig @ 1000 RPM
. ..............................................................18 psig @ 2000 RPM
. ..............................................................24 psig @ 4000 RPM
Recommended Oil ............5w30 Dexos 1 motor oil or equivalent
................... (must meet GM4718M specication, which will be
.......................................................... specied on the oil label)
Oil Filter .................................... AC Delco Part Number UPF48R
Fuel........................................... Premium unleaded - 92 (R+M/2)
Maximum Engine Speed .............................................6600 RPM
Spark Plugs ........................................................... GM 12571165
................................................................... AC Delco # 41-104
Spark Plug Gap .....................................................................040”
Firing Order ......................................................... 1-8-7-2-6-5-4-3
Information may vary with application. All specications listed
are based on the latest production information available at
the time of printing.
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Caractéristiques techniques du moteur en caisse LS9 (19244099)
Numéro de pièce des caractéristiques techniques 19244108
Nous vous remercions d'avoir choisi Chevrolet Performance comme source de haute performance. Chevrolet Performance 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 ont été conçues, élaborées et mises à l'essai de manière à dépasser vos attentes de réglage
précis et de fonction. Veuillez vous reporter à notre catalogue pour connaître le centre Chevrolet Performance autorisé le plus près
de chez vous ou visitez notre site Web à www.chevroletperformance.com.
La présente publication offre de l'information d'ordre général sur les composants et les procédures pouvant s'avérer utile lors de
l'installation ou de l'entretien du moteur en caisse LS9. Veuillez lire en entier la présente publication avant de commencer
à travailler.
L'assemblage de ce moteur en caisse LS9 est effectué en utilisant des composants neufs de première qualité. Compte tenu de
la vaste gamme d'applications de moteurs, si l'on pose en après-vente une application antérieure, il se peut que l'on constate
des différences de pose entre le moteur en caisse LS9 actuel et la version précédente. Ces différences peuvent nécessiter des
modications ou des composants supplémentaires qui ne sont pas compris avec le moteur LS9, y compris les systèmes de
refroidissement, électrique et d'échappement, ainsi que le circuit d'alimentation. II se peut qu'une certaine fabrication soit requise.
Ces caractéristiques techniques ne sont pas destinées à remplacer les pratiques d'entretien complètes et détaillées expliquées
dans les manuels d'atelier GM. Se reporter au manuel de réparation de la Chevrolet Corvette 2010-2013 (LS9) pour de plus amples
renseignements non inclus dans les présentes caractéristiques techniques.
Pour obtenir de l'information sur l'étendue de la garantie, prière de communiquer avec le concessionnaire Chevrolet Performance local.
Observer toutes les précautions et tous les avertissements en matière de sécurité présentés dans les manuels de réparation
au moment de poser ce moteur en caisse LS9 dans n'importe quel véhicule. Porter un protecteur pour la vue et des vêtements
de protection appropriés. Lorsqu'on travaille sous ou autour d'un véhicule, le soutenir solidement à l'aide de chandelles. Utiliser
seulement les outils appropriés. Faire preuve d'extrême prudence lorsqu'on travaille avec des liquides ou des matériaux
inammables, corrosifs ou dangereux. Certaines procédures nécessitent l'utilisation d'un équipement spécial et des habiletés
particulières. Si vous ne possédez pas la formation, l'expertise et les outils nécessaires pour effectuer toute partie de cette
conversion en toute sécurité, ce travail devrait être réalisé par un professionnel.
Information juridique et relative aux émissions
La présente publication a pour objet d'offrir des renseignements sur le moteur en caisse LS9 et les composants connexes.
Ce guide décrit également les procédures et les modications pouvant s'avérer utiles lors de l'installation d'un moteur en
caisse LS9. Ces renseignements ne sont pas destinés à remplacer les manuels de réparation complets et les catalogues
de pièces en matière de moteurs et de composants de la General Motors. Plutôt, ce guide a été conçu pour offrir des
renseignements supplémentaires sur les matières pouvant intéresser les «bricoleurs» et les mécaniciens.
Cette publication s'applique aux moteurs et aux véhicules qui sont utilisés hors des voies publiques, sauf indication
contraire expresse. Les règlements fédéraux restreignent la dépose des véhicules automobiles de toute partie d'un
système antipollution exigé par la loi fédérale. En outre, de nombreux États ont établi des lois qui interdisent le traquage
ou la modication de tout système antipollution ou antibruit exigé par la loi. En règle générale, les véhicules qui ne roulent
pas sur les voies publiques, tout comme certains véhicules d'intérêt spécial et pré-émissions, sont exempts de la plupart de
la réglementation. On suggère fortement au lecteur de consulter tous les règlements municipaux et provinciaux applicables.
Plusieurs des pièces qui sont décrites ou énumérées dans le présent ouvrage sont commercialisées à des ns hors
autoroute seulement et elles portent l'étiquette «Special Parts Notice» (avis sur les pièces spéciales) qui est reproduite ici.
Avis spécial sur les pièces
Cette pièce a été conçue spéciquement pour une application hors route seulement. Puisque la pose de cette pièce pourrait
nuire au rendement antipollution du véhicule ou donner lieu à son manque d'homologation en vertu des normes de sécurité
actuelles des véhicules automobiles, celle-ci ne doit pas être posée dans un véhicule qui sera utilisé sur une voie publique
ou une autoroute. En outre, une telle application pourrait donner lieu à l'annulation de la garantie d'un tel véhicule sur route
ou autoroute.
Les renseignements contenus dans cette publication sont présentés sans aucune garantie. Tout risque encouru pendant l'utilisation
de cette publication est entièrement assumé par l'utilisateur. La conception de composant spécial, les procédures mécaniques et les
qualications de chaque lecteur sont hors du contrôle de l'éditeur et c'est pourquoi il décline toute responsabilité afférente en lien avec
l'utilisation des renseignements fournis dans cette publication.
Chevrolet, l'emblème Chevrolet, General Motors et GM sont des marques déposées de General Motors. Chevy est une marque
de commerce de la General Motors Company.
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