Banks Power GM Motorhomes: (Gas ’96 - 00 7.4L Vortec) Power Systems- Stinger system (EFI TBI, P30 chassis) - Manual (Page 8)

P.n. 96339
raise front of vehicle on hoist or ramps.
NOTE: Figure 1 shows how ramps may be
constructed for this purpose.
CAUTION: Observe safety precautions regarding
use of ramps and other lifting methods. see
general instruction practices and cautions
contained in Figure 1. If the vehicle is supported
by a hoist, the front wheels may be removed for
further accessibility if desired.
as a precaution, disconnect both battery
cables.
Disconnect and remove the entire exhaust
system, up to the exhaust manifolds. Take
care not to damage the oxygen sensor when
removing it from the exhaust piping. save all
hardware and hangers, some items will be reused
in the stinger installation.
Remove the original “doughnut” gaskets from
the exhaust manifold outlets and replace with
the new gaskets provided (Figure 2 , #1). Lightly tap
the gasket into place until it seats. nOTe: Inspect
condition of exhaust manifolds. High heat conditions
frequently result in exhaust manifold deterioration.
badly cracked or distorted manifolds may require
replacement to prevent dangerous exhaust leaks.
Install the right and left exhaust head pipes
(Figure 2 , #2 & 3) to the exhaust manifolds
using the original nuts.
Use a snips to cut through the two bands
holding the heat shield to the original
factory muffler. remove the shield and spread
it open enough so it can be slid onto the new
muffler. attach shield with two no. 136 hose
clamps (Figure 2, #7). see Figure 3 for shield
orientation.
NOTE: Gap in shield should point down when
installed in vehicle.
Install the Stinger muffler (Figure 2, #8)
on the exhaust head pipes. see figure
1 for details on muffler hangers and brackets
(Figure 2 , #5 & 9). Leave the muffler U-clamps
just loose enough to allow adjustment of the
muffler’s position as required, then snug clamps.
see Figure 3 for orientation of muffler inlet
connections.
Reinstall the oxygen sensor in the bung on
the left head pipe. use a small amount of
anti-seize compound on the threads.
Working from the muffler back, install
the catalytic converter and heat shield
(Figure 2, #10), then install the tail pipe
sections most appropriate for your vehicle (long
wheelbase models will require optional extension
pipes). because of various chassis lengths and
configurations, your tail pipe hangers (Figure 2,
#13) may or may not line up properly for the tail
pipe routing. We have provided two universal
tail pipe hangers that may be attached to cross-
members, frame rails, etc. with the remaining 3 ⁄
8
–16
x 1” hex bolts, nuts and washers. see Figure 2 for
tailpipe assembly. Maintain 1 1 ⁄
2
” of clearance to
frame and body to prevent rattles and hot spots.
Check that the converter heat shield will not rattle
against frame or body.
Install the chrome tailpipe extension tip
(Figure 2, #16). extension tip may be slid in
or out over tailpipe until desired length is obtained
for body width. Then clamp extension to tailpipe
using 3” u-clamp. NOTE: If tailpipe passes under
any side compartments or within proximity of
floor (4-6”), we highly recommend the installation
of a tailpipe heatshield (optional, available from
Banks) to prevent burning of carpet and other
combustibles.
Lower the vehicle and reconnect the battery
cables. start engine and listen for any
exhaust leaks. Tighten bolts or clamps to correct
leaks as required.
NOTE: The vehicle exhaust may smoke upon initial
start-up. This is normal, as grease used in the
tube-bending process burns off the pipes.
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STINgER INSTALLATION PROCEDURE
Figure 3
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