MSD 2950 Atomic LS2_LS3 Master Kit Installation - Manual (Page 6)

6 INSTALLATION INSTRUCTIONS
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
INSTALLING THE INTEGRATED FUEL/ECU RAILS
The integrated fuel/ECU rails are supplied with the covers installed. The rails are designed to install to OEM
intake manifolds and many aftermarket designs. To prepare the rails for installation, locate the four intake
manifold bolts supplied with the Atomic LS Master Kit, as well as the four mounting brackets.
It is important to note at this point, that you have the correct injectors for your application as well as O-ring
seals and the injector retainers. These components are not supplied in the master kit.
WARNING: Care must be used when installing the fuel injectors and rail assemblies.
The following steps will guide you
through the installation of the two fuel
rail assemblies.
1. The fuel rails are supplied with
the covers in place. Remove the
covers to prepare and install the
rail assemblies (Figure 3). Also,
determine which rail is which by
reviewing the sensor connectors
and location as shown in Figure 9
on page 8.
2. Figure 4 shows the location for the fuel
rail brackets. Remove the hardware
from the intake manifold and install
the brackets as shown using the
supplied longer intake bolts. Use
GM 1245383 thread sealant or
equivalent on the intake manifold
bolts. Note that the passenger rear
bracket requires a spacer (supplied)
as shown in Figure 4. Torque the new
intake bolts to 89 in-lbs.
NOTE: If installing the intake manifold
for the first time follow the
torque sequence in Figure
4. Torque in steps; 44 in-lbs
first, followed by 89 in-lbs.
It is recommended to hold
a straight edge against the
brackets to ensure alignment
while torquing. Figure 4 Fuel Rail Bracket Locations.
Figure 3 Removing Fuel Rail Covers.
REAR
REAR FRONT
BRACKET
NOTE: THE PASSENGER
SIDE REAR MOUNT
REQUIRES THE
SUPPLIED SPACER.
9 3 2 6 7
8
5 1 4 10
TORQUE SEQUENCE
STEP 1 - 44 LBS/INCH
STEP 2 - 89 LBS/INCH
FUEL RAIL FUEL RAIL
COVER
LIFT THIS SIDE OF
COVER ENOUGH TO
CLEAR FUEL RAIL
FUEL RAIL FUEL RAIL
COVER
PUSH COVER
FUEL RAIL FUEL RAIL
COVER
LIFT COVER UP
DISENGAGE
FROM FUEL
RAIL
MUST USE THREAD SEALANT