RECOMMENDED COMPONENTS
See your Chevrolet Performance Parts Dealer for additional production component information.
Starter:
The LTG crate engine does not include a starter. GM part number 12657797 and starter bolts 11588726 are matched to this
application and is recommended. See your Chevrolet Performance Parts dealer for details.
Coolant System Surge Tank
Production Coolant System Surge Tank from 2013-2105 Cadillac ATS 22948113 and cap 13502509 are recommended for proper
system operation
START-UP AND BREAK-IN PROCEDURES
Safety first. 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 filled with oil. After installing the engine, ensure the oil system has been filled with
the appropriate motor oil to the recommended oil fill level. The LTG crate engine requires a special oil meeting GM Standard
Dexos 1. Also check and fill as required any other necessary fluids such as coolant, power steering fluid, etc.
2. The engine should be primed with oil before starting. Install an oil pressure gauge (the existing oil pressure sensor location on
the right side of the block under the intake manifold may be used) Disconnecting the engine control system (removing power
from the engine control module is generally recommended, but check your engine control system information for additional
details).
Note: Disconnecting only ignition or fuel injector connectors is not recommended – make sure the control system will not
provide ignition or fuel to the engine.
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 first 30 miles or one hour without wide open throttle
(WOT) or sustained high RPM accelerations.
7. Run five 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 filter. Replace the oil per the specification in step 1, and replace the filter with a new PF64 AC Delco oil
filter. Inspect the oil and the oil filter 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 filter. Again, inspect the oil and oil filter for any foreign particles to ensure that the engine is functioning
properly.
LTG Crate Engine
TITLE
19328838
IR 24OC14
PART NO.
7
24
SHEET
OF