Vortech 1996-2000 4.3L Truck/SUV - Manual (Page 15)

P/N: 4GD020-010
©2001 Vortech Engineering, LLC
All Rights Reserved. Intl. Copr. Secured
26APR01 V1.2 (4.3L V-6/S-10-(4GD))
9. SUPERCHARGER AIR INLET
A. Install the supplied plastic 3/4” x 90
°
vent adapter into
the factory rubber grommet located on the right side
valve cover. Rotate the vent adapter so that it points
toward the rear of the vehicle. Attach the supplied 3/4”
x 20” hose to the installed adapter.
B. The oil fill riser must be modified to allow for fitment of
the new air inlet duct (see Fig. 9-a). Begin by removing
the plastic oil fill riser and cap located on the right side
valve cover. Cut the riser in half (the diameter) using a
saw or cut-off wheel. Clean and reinstall the base of the
cut riser into the valve cover. Slide the supplied piece of
1” x 4” hose over the base. Insert the remaining top
portion of the filler into the hose. The cap should now
be approximately 2-3” higher than its factory location.
Adjust height if necessary.
C. Install the supplied 1/2” NPT x 90
°
x 3/4” hose barb
fitting into the 3.5” steel inlet tube. The fitting must be
“clocked” so that when the inlet tube is installed, the
fitting points down and over to the right side valve cover
and attaches to the previously installed 3/4” valve cover
vent hose (temporarily place the tube in its installed
position to approximate the fitting rotation before final
installation).
D. Attach the supplied inlet tube support to the left rear
portion of the intake manifold (see Fig. 9-b).
E. Using the supplied 3.5” silicone sleeve and #56 hose
clamps, attach the 3.5” inlet duct to the supercharger.
Lay the duct on top of the previously installed tube
support. Connect the 3/4” valve cover vent hose to the
90
°
fitting on the inlet duct. Trim length if necessary.
Situate duct so that it does not contact the firewall or
any other object that will cause problems when the
engine torques on operation. Secure duct to the tube
support using the supplied #52 clamp.
F. Attach the 1” x 3” compressor bypass discharge hose
to the barb located on the inlet duct.
G. Remove the factory MAF sensor and airbox assembly.
Remove the driver's side headlight assembly. Separate
the MAF sensor from the airbox (see
Fig. 9-e). Remove
the filter and venturi-shaped inlet from the box. Modify
the lower portion of the airbox as shown and reinstall
into the vehicle. Insert the supplied airbox inlet duct
through the core support opening behind the headlight
and into the modified factory airbox. Rotate the duct
(see
Fig. 9-c). Drill two holes into the core support using
the duct flange as a guide. Secure the duct with the two
sheet metal screws provided. Reinstall headlight
assembly.
H. Install the supplied K&N air filter into the factory airbox.
Drill a 3/4” hole into the airbox top in the location shown
(see
Fig. 9-d). Insert the supplied rubber grommet and
the factory air intake temperature sensor into the new
hole. Attach the modified airbox lid the airbox base.
Reattach the MAF to the airbox lid. Attach the factory
MAF and IAT sensor connectors.
9
INLET TUBE SUPPORT
NEW IAT SENSOR LOCATION
Fig. 9-c
Fig. 9-b
Fig. 9-a
MODIFIED OIL FILL RISER