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Installation Instructions:
ECM
The Engine Control Module (ECM) is environmentally sealed and can be
mounted underhood, however, avoid extremely hot locations (exhaust,
etc.) or high splash areas. It is not recommended that the EMC be
mounted directly to the engine.
Accelerator Pedal
Mount the accelerator pedal per the following dimensional guidelines,
mounting details are application-specific and are left to the user. Ensure
that the pedal is securely mounted to the vehicle. A grommet is required
in any sheet metal hole that the harness routes through to avoid wire
damage.
ACCELERATOR PEDAL ASSEMBLY MINIMUM SPACING GUIDELINES
2"
Brake Pedal
Accelerator
Pedal
Side View
Mass Air Flow (MAF) Sensor
NOTE: It is critical that the MAF sensor is mounted per the
instructions below. Vehicle performance and/or driveability may be
affected if it is not mounted as recommended.
The mass air flow sensor must be installed in the induction system using
the supplied MAF sensor mounting boss. The induction system should
be 4 inches in diameter and have a minimum straight section 6 inches
in length. Mount the MAF sensor in the middle of the straight induction
section, ensuring that the middle of the mounting boss is at least
10 inches from the throttle body.
The MAF sensor must be oriented correctly in the induction system
– note the arrow on the sensor indicating flow direction. Be sure to
weld the mounting boss correctly – the sensor will only mount one
way in the boss (see diagram).
Weld the boss in place before installing the sensor. When installed in
the vehicle, the MAF sensor should be mounted with the connector end
pointing between horizontal and fully upright – do not mount with the
connector oriented downward.
MAF SENSOR MOUNTING GUIDELINES
MINIMUM 6" STRAIGHT SECTION
4"
TUBE
MAF SENSOR MOUNTING BOSS
MINIMUM 10" FROM THROTTLE BODY
5.3L Crate Engine Control System
TITLE
2.5"
Brake
Pedal
.75"
Accelerator
Pedal
Front View
TO AIR FILTER
UP
Air Cleaner
It is recommended that a dry element air cleaner be used.
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.
Tunnel /
Exhaust Manifolds:
Console
It is recommended that you use the provided exhaust manifolds or
similar LS Engine style Exhaust Manifolds.
Positive Crankcase Ventilation System (PCV)
How to set up your PVC system:
There are two ports on the engine that make up the PCV system. The
ports on the engine are 1). Left rear (driver side) valve cover. 2) Top
center of the inlet manifold. The ports with silver tubes may look simple
but, they should not be modified. The tubes have a small orifice within
them that is used in place of a PCV valve of earlier designs.
There is one fresh air port which is on the front of the right (passenger
side) valve cover. Again this is a silver tube that faces forward on the
valve cover. This port should be connected to filtered clean air. This
connection must be within the engines air cleaner system and must be
between the MAF (Mass Air Flow Sensor) and engine's throttle body.
The engine burns the air that enters the PCV system so, if the fresh air
port is prior to the MAF then, this air will enter the engine without being
measured by the MAF and adverse engine operation may occur.
5.3 L Power Brake
Vacuum Source Plug
5.3 L Foul Air PCV
Connection
REV 28JN12
PART NO.
5.3 L Purge
Solenoid to Canister
19258097
SHEET
2
25
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