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Air Cleaner: It is recommended that a dry element air cleaner be used. Chevrolet Performance universal air inlet kit, P/N 19301246 is available for use
and meets all of the above requirements.
NOTE: Fueling cannot be guaranteed if an oiled element type air cleaner is used.
Oxygen Sensors
NOTE: It is critical that the Oxygen Sensors are mounted per the instructions below. The exhaust system MUST be properly sealed – any leak near
the sensors (upstream or downstream) can cause incorrect operation of the fuel control system. Vehicle performance and/or driveability may be
affected if sensors are not mounted as recommended or if an exhaust leak exists. Leak check the exhaust system to ensure adequate sealing (even
small leaks can affect fuel control).
Oxygen Sensors should be mounted in the collector area of the exhaust manifolds in a location that allows exhaust from all cylinders to be sampled
equally (stock exhaust manifolds include a mounting boss for the oxygen sensors). Be sure the connectors and wiring are routed away from high heat
areas. The oxygen sensors should be mounted with the sensor tip pointing between horizontal and fully downward – do not mount with the tip
oriented upward. Weld in the mounting bosses supplied (7/8" hole) if using headers.
Exhaust Manifolds: It is recommended that you use the provided exhaust manifolds or similar GEN 5 Engine style Exhaust Manifolds.
Positive Crankcase Ventilation System (PCV)
How to set up your PVC system:
There are ports, one each per valve cover, that need to be connected to the engine air filtration system (air cleaner).
These ports must be connected somewhere in between the Mass Air Flow (MAF) meter and the engine throttle
body. The air for PCV needs to be measured by the MAF, in order for proper engine operation. PCV hose 12645127
can be purchase to obtain the quick connect fitting, when creating a custom installation (item 1 in Figure).
Power Brake Booster Vacuum Source:
The vacuum port for the Brake Booster is a plug in the rear of the intake manifold. If you need the vacuum source for your brake system the plug needs
to be removed and you will need fitting #12559760 available from any GM dealer.
Oil Pressure Sensor:
The oil pressure sensor that comes on the engine should not be removed or modified. It is required to ensure proper control of the oil pump.
Fuel Line Pressure Sensor
This sensor is necessary for operation of the Fuel Pump Power Module. The fuel line Pressure Sensor should be installed as far away from the engine as
practical in the fuel feed line. This will help dampen any fuel pressure spikes from the engine mounted high pressure fuel pump. Do not use an impact
drive to install the sensor. Torque to 15 NM +/- 5 NM. The sensor must be mounted on an M10x1.0 port with an O-ring seal capable of sealing fuel.
Pressure Sensor must be mounted as shown:
5.0° to 85°
ALLOWABLE MOUNTING ORIENTATION IN ANY DIRECTION RELATIVE TO VERTICAL POSITION
Fuel Pump Power Module
The Fuel Pump Power Module should be mounted as close to the fuel pump as practical and the wires powering the fuel pump must remain twisted. If
additional length is needed, maintain a twist of 27 turns per meter or 8 per foot to ensure adequate protection from Electromagnetic Interference with
the rest of the vehicle (i.e. radio and other control modules). The Fuel Pump Power Module is fully sealed and can be mounted in any orientation but
best practices should be maintained (i.e. away from heat sources, maintain adequate clearance to moving parts, maintain adequate ground clearance,
connector pointed in a downward direction to prevent water intrusion etc.).
LT1 Based Engine Control System
ALL INFORMATION WITHIN ABOVE
Date
BORDER TO BE PRINTED EXACTLY
03MY19
AS SHOWN ON 8.5 x 11 WHITE 16
POUND NON-BOND RECYCLABLE
PAPER. PRINT ON BOTH SIDES,
EXCLUDING TEMPLATES. TO BE
UNITIZED IN ACCORDANCE WITH
GMCCA SPECIFICATIONS.
5.0° to 85°
IR 03MY19
Revision
Auth
Init Rel – Blake Nye
NA
PART No.
19418601
DR
Installation Instructions
Title
LT1 Based Engine Control System
19418601
PART No.
SHEET
4 of 33
SHEET 4 of 33
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