2. Start the 2 fasteners (
B
, Figure 187) by hand. Tighten to
13 lb-in
(1.5 Nm).
187
3. Connect the wire harness electrical connector to the IAC
valve connector.
Intake Elbow/Throttle Body Adaptor
On engines equipped with a cyclonic air cleaner, an intake
elbow is fitted. Follow the installation steps for the intake
elbow.
On engines equipped with a low-profile air cleaner, a throttle
body adapter is fitted. Follow the installation steps for the
throttle body adaptor.
Intake Elbow Installation
1. Install the intake elbow to the throttle body.
2. Start the 2 intake elbow fasteners (
C
, Figure 188) by
hand. Tighten to
90 lb-in
(10.2 Nm).
188
NOTE:
Depending on your engine's trim, the intake elbow
may be secured to the throttle body by either 2 or 4 fasteners.
The installation procedure and torque specifications are the
same regardless of the number of intake elbow fasteners.
3. Connect the crankcase breather hose to the large intake
elbow port (
A
).
4. Connect the fuel vent line to the small intake elbow port
(
B
). See
Fuel Pump Module - Install
.
Throttle Body Adaptor Installation
1. Install the throttle body adaptor with
new
gasket onto the
throttle body.
2. If equipped, install the ECM/Fuse Block mounting bracket
to the throttle body adaptor.
3. The throttle body adaptor is secured to the throttle body
with 4 fasteners that also secure the low-profile air
cleaner base.
4. Install the air cleaner base plate with
new
gasket onto
the throttle body adaptor.
5. Start the 4 air cleaner base plate fasteners (
C
, Figure
90 lb-in
(10.2 Nm).
189
6. Start the air cleaner base plate to support bracket
fasteners by hand. Tighten to
115 lb-in
(13 Nm).
NOTE:
Depending on your engine's trim, the air cleaner base
plate may be secured to a support bracket with either 2 or 4
fasteners. Regardless of the number of fasteners, the torque
specification remains the same.
7. Connect the crankcase breather hose (
A
) to the large
intake adaptor port.
8. Connect the fuel vent line (
B
) to the small intake adaptor
port. See
Fuel Pump Module - Install
.
Ignition Coil - EFI and EFI-ETC
1. Install the ignition coil on to the intake manifold boss,
aligning the mounting holes of the ignition coil with the
threaded boss holes of the intake manifold.
2. Start the 2 ignition coil fasteners (
A
, Figure 190) by hand.
Tighten to
30 lb-in
(3.4 Nm).
190
144
Summary of Contents for BIG BLOCK M540000
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