MSD 2957 Atomic LS Master Early Truck Kit (GEN III 1999-2007) Installation - Manual (Page 3)

INSTALLATION INSTRUCTIONS 3
M S D
• W W W . A T O M I C E F I . C O M • ( 9 1 5 ) 8 5 5 - 7 1 2 3 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
PREPARING THE INTAKE MANIFOLD FOR
INSTALLATION OF THE ATOMIC LS FUEL RAILS
The intake manifold must be modified in order to install the Atomic
LS fuel rails. Removal of the intake manifold for modification and
installation of the fuel rails is recommended but not required. If
care is taken while the intake is removed from the motor, the intake
gaskets can be reused.
• Cut the mounting bosses that hold the factory fuel rails off. (Figure
1a and Figure 1b).
• Using a drift pin or a center punch, knock the factory bolts out
of the centering bushing used to align the intake on eight of the
ten intake bolts/bushings (Figure 2). Take care not to damage
the centering bushings as they will be reused with the new intake
bolts.
Note: If the manifold is modified on the motor, plug the injector
bosses to prevent debris falling into the motor.
Figure 1a
Figure 1b
Figure 2
FUEL RAIL INSTALLATION (3 AND 4-BOLT
THROTTLE BODY INTAKE MANIFOLD)
1. Preassemble the rail brackets with the spacers and centering
bushing. Coat the ends of the bolts with thread sealant.
2. The angled end of the bracket is always facing to the left when
installed correctly on either side of the engine (Figure 3).
NOTE: The spacers for the 4-bolt intakes are slightly longer
than the 3-bolt spacers.
ANGLED
END
Figure 3 3-Bolt and 4-Bolt
Intake Configuration.
4-BOLT
SPACER