Vortech 2003-2004 Chevrolet SS User Manual
Page 36
18
P/N: 4GL020-015
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
08OCT08 GM Trk/H2(4GL..015v5.0)
12.C 2003-2007 H2 HUMMER INLET DUCT INSTALLATION
A. Install the supplied 3-1/2" x 3" sleeve onto the
MAF outlet, and the 3-1/2" x 2" sleeve on the
inlet of the supercharger.
B. Reinstall the upper fan shroud. Remove the
two screws securing the top of the radiator to
the core support.
C. Slide the entry of the large plastic inlet duct
into the sleeve installed on the MAF. Lower
the inlet duct onto the top of the radiator
shroud.
D. Reinstall the factory radiator bolts through the
two supplied inlet duct mounting tabs and into
their original bolt holes.
E. Insert the 1/4" -20 x 1/2" screws through the
brackets and onto each side of the inlet duct
using the supplied washers. Tighten the
screws. (See Fig 12.B-g.)
F. Install the supplied 180° inlet duct onto the
inlet of the supercharger. Orient the duct so
that there is equal space between, the ECM
and the master cylinder. (See Fig. 12.B-e.)
G. Install the supplied #52 hose clamps and
3-1/2" x 13" long flex hose between the 180°
cast duct and the rotomold duct.
H. Using the supplied 3/8" hose mender, connect
the supplied 3/8" hose from the 3/8" fitting on
the inlet duct to the passenger’s side valve
cover breather hose. Secure the hose so that
it cannot interfere with the throttle arm or
cable. (See Fig. 12.B-c.) Using the 5/8"-to-
3/8" reducer, connect the 3/8" hose that
comes from the valve cover breather to the
3/8" side of the reducer. With the supplied
piece of 5/8" hose, connect it to the barb
which in turn will connect to the 5/8" fitting on
the back of the 180° inlet duct.
I. Install and tighten the hose clamps on each
connection.
Fig. 12.B-g
Fig. 12.B-e
Fig. 12.B-f
180° INLET
FLEX HOSE
SUPPLIED
1/4-20 x .50
SCREW
SUPPLIED
1/4-20 x .50
SCREW
ATTACH TO 3.5" FLEX HOSE
WHICH LEADS TO CAST
INLET DUCT
DRIVER'S
SIDE BRACKET
¨
TO FACTORY AIR BOX
PASSENGER'S
SIDE BRACKET
FACTORY RADIATOR SCREWS
TOP VIEW
H2 HUMMER INLET