PN2945 Datasheet, PDF (1/2 Pages) Mallory performance club – Atomic LS Throttle Body

Atomic LS Throttle Body
103mm, PN 2945
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Thank you for purchasing an MSD Atomic 103mm Throttle Body. The Atomic 103mm Throttle Body
is designed for aftermarket intake manifolds designed with a larger air intake. This model is designed
for intakes utilizing an OEM style 4-bolt mount for the throttle body and must be used with a cable-
driven throttle. Also, note that this throttle body requires an Idle Air Control (IAC) motor and Throttle
Position Sensor (TPS). These are available in a separate kit, PN 2942.
WARNING: When installing the Atomic LS Throttle Body, disconnect the battery cables. When
disconnecting, always remove the negative cable first and install it last.
Parts Included:
1 - Throttle Body
2 - M4 x 10mm Torx Screws (IAC)
2 - M4 x 14mm Torx Screws (TPS)
4 - M6 x 25mm Bolts
4 - #12 SAE Washers
Parts needed but not included:
TPS/IAC Kit, PN 2942
Throttle Body to Intake Seal
Blue Loctite
INSTALLATION OF THE THROTTLE BODY
The Atomic LS 103mm Throttle Body requires installation of an IAC motor and TPS. These are
available as PN 2942. Locate the supplied mounting hardware for each unit as well as Blue Loctite.
It is recommended to install the IAC motor after mounting the throttle body for better access to the
mounting holes.
1. Install the TPS by inserting the D-shaped throttle shaft into the sensor assembly. Gently align the
centering dowel and mounting holes. Use a drop of Blue Loctite on the M4x14mm screws and
tighten the screws to 16-18 lb-in (Figure 1).
2. Ensure the mating surfaces of the intake and throttle body are clean. Locate the four M6x 25mm
bolts and #12 washers.
3. Install the throttle body and seal (required) to the intake manifold using the M6x25mm bolts and
washers. Torque the bolts in a criss-cross pattern to 89 lb-in.
4. Locate the two M4x10mm screws to secure the IAC motor. Ensure the O-ring seal is installed
on the IAC and put it in place on the throttle body. Use a drop of Blue Loctite on the screws and
torque them to the bolts to 25-27 lb-in (Figure 1).
5. Plug in the TPS and IAC motor connectors. Install the air inlet duct and any other sensors that
may have been disconnected during the installation.
6. Install the throttle cable in the throttle cam groove. Ensure that the throttle blade moves smoothly
and returns to its closed position.
WARNING: Before starting the engine and/or driving the vehicle, ensure that the throttle blade
moves through its full range of travel without binding or sticking.
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