Banks Power GM Motorhomes: (Gas ’96 - 00 7.4L Vortec) PowerPack system (EFI Vortec, P12 chassis) - Manual (Page 6)

slide a 3.5” u-clamp onto the tailpipe extension and
slip the extension onto the tailpipe. place a stand
under the extension to support it level with the vehicle. The
end of the tailpipe extension should be even with the outside
edge of the lower body of the vehicle. if the pipe is too low
on the vehicle, it can be raised by trimming the tailpipe
where the 2 parts slip together.
place the universal hanger supplied onto a 3.5”
muffler clamp and slide the clamp over the tailpipe to
a point just below the frame hanger bracket. either measure
or mark the strap on the hanger even with the bottom of the
frame bracket previously installed. remove the clamp and
hanger from the pipe and make a 90 degree bend in the strap
at the measurement or mark.
place the clamp and hanger back onto the tailpipe
extension and attach the hanger to the frame bracket
with the 3 ⁄
8
x 1” bolt washers and nut provided. Make sure that
the extension is level with the vehicle and tighten the 3.5”
clamp. tighten the clamp on the muffler outlet and the clamp
that holds the extension to the tailpipe.
place the polished tip over the end of the tailpipe so
that the end of the tailpipe is approximately 1” inside
the tip. clamp the tip to the pipe with a 3.5” u-clamp.
if it is needed to protect a side box, a clamp-on
tailpipe heatshield has been provided. it is clamped
with the remaining 3.5” u-clamps to the tailpipe.
With the proper height established, slide the polished
tip over the end of the tailpipe extension. in most
cases the tailpipe extension will have to be shortened when
the polished tip is positioned for best appearance in relation
to the coach bodywork. once a position is determined,
mark the tailpipe extension to locate the inside edge of the
polished tip. remove the tip, then measure and make a
second mark 10
1 ⁄
2
” inches out from the first mark. This will
allow for 1 1 ⁄
2
” inset from the end of the tailpipe extension to
the end of the polished tip. remove the tailpipe extension
and cut it at the second mark. reinstall the tailpipe extension
and clamp it into place. Make sure the pipe is square with the
vehicle or pointing slightly to the rear. slide the tip on and
secure it with a 3
1 ⁄
2
”-inch clamp. (Figure 6a )
level the pipe with the vehicle and place the universal
clamp onto the pipe with a 3
1 ⁄
2
”-inch clamp. For proper
alignment with the tailpipe, some minor adjustment to the
angle of the hanger head may be necessary. (Figure
6b ) secure
the hanger to the vehicle frame with the 3 ⁄
8
-16 x 1 bolt thru the
oblong hole in the bottom of the framerail. use the segment of
flat strap as a washer on the upper side of the frame-rail. This
will allow the pipe to remain level when the clamp is tightened.
place the heatshield over the clamp that is holding the tip in
place and secure it with the clamp-nuts. place another clamp
at the opposite end of the heatshield and secure it to the pipe.
on some narrow-body vehicles it may be necessary to trim the
heatshield.
lower the vehicle and reconnect the battery cables.
start the engine and listen for any exhaust leaks.
Tighten bolts or clamps to correct any leaks or improper
adjustments. Whenever possible, tack-welding slip
connections to prevent disengagement is recommended.
Note: It is normal for the vehicle exhaust to smoke upon
initial start-up. This indicates the lubricant applied during the
tube-bending process is burning off the pipes.
BAnKS RAM-AIR™ InTAKE:
locate the factory air filter housing and access it
from inside the right-side wheel-well. replace the
factory air filter element with banks ram air element. place
the “sTop!” decal on the air filter housing so that it is clearly
visible to service personnel.
open the front engine cover. locate and remove the
air silencer assembly attached to the front of the air
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