Banks Power Ford Motorhomes: (Gas ’93 - 97 7.5L Class-C) PowerPack system (Class-C) For Use w_ 460 EFI Engine - Manual (Page 9)

18.
remove factory tailpipe hanger assembly
(bracket and two rubber hangers) from
shock crossmember.
19.
bolt the tailpipe hanger extension to the
original bolt holes on the rear shock
crossmenber. see figure 4. use two 5 ⁄
8
-18 x 3 ⁄
4
hex
bolts and two 5 ⁄
16
-18 crimp lock nuts.
20.
bolt the original tailpipe hanger assembly
to the hanger extension using the original
hardware.
21.
install the converter-to-muffler adapter (or
extension pipe used on long wheelbase
models) on the catalytic converter. use a 2 1 ⁄
2
” x 3”
adapter on converters with a 2 1 ⁄
2
” outlet or a 3”
outlet or a 3” x 3” adapter or optional extension
pipe on converters with a 3” outlet. see figure 5.
reinstall the factory 2 1 ⁄
2
” or 3” u-clamp to secure
the adapter or extension pipe to the catalytic
converter outlet. extension pipe will have to be
cut to length to properly position the muffler. see
step 24.
NOTE: Some catalytic converters with a 2 1 ⁄
2
” outlet
have an alignment button welded to the outside of
the outlet tube. The converter outlet adapter will have
a corresponding notch to accommodate this button.
Drive the adapter onto the converter until the button
bottoms in the notch.
22.
on standard wheelbase (158”) models,
install the dynaflow ™ muffler on the
catalytic converter adapter. install a 3” u-clamp
with hanger rod into the original rubber hanger to
support the front of the muffler. see Figure 5. do
not tighten clamp at this time.
NOTE: Extended wheelbase models require an
additional 3” U-clamp at this muffler inlet with the
extension.
23.
install the monster ™ tailpipe into the muffler
outlet and hanger assembly. install a 3 1 ⁄
2
”
u-clamp at the muffler outlet. do not tighten at
this time.
24.
rotate the dynaflow muffler as required to
best align the muffler and the catalytic
converter. make sure that the overall length of
the tailpipe/muffler/extension pipe combination
allows the rubber tailpipe hangers to hang at an
angle, with the bottom end slightly forward or
straight down. if the hangers angle back, it may
place the tailpipe outlet too close to the tire for
adequate clearance between the tailpipe outlet
and the tire. when correct, tighten all u-clamps.
25.
an additional hanger is required to support
the outboard end of the tailpipe. this
hanger hooks under a heavy wire strap that spans
a 3 1 ⁄
2
” u-clamp. see Figure 5. if the tailpipe
heatshield is to be installed (see subsequent
steps), it should be mocked up as the hanger will
tie into one of the mounting clamps.
CAUTION! if the tailpipe end passes under or near
a build-in storage compartment, hoses, wiring,
plumbing, or other items that may be affected by
high temperature, we strongly recommend that
the optional exhaust heat shield, available from
banks, be utilized if any of these items are less
than 4” from the exhaust tailpipe. if the tailpipe
end passes within 4” of the underside of the
body as it exists the vehicle, a heat shield is also
recommended to protect the body.
26.
determine a method for attaching the
rearmost tailpipe hanger to the coach body
or chassis structure. because there are many
different coach configurations, the installer will
have to select a method of attachment. make
sure that the supporting area is substantial
enough to handle the weight and vibration of the
tailpipe assembly. an extension for the hanger is
provided along with three 5 ⁄
16
-18 x 1” hex bolts and
5 ⁄
16
-18 locknuts.
27.
install the polished tailpipe tip and heat
shield. see figure 5 . note that one of the
3 1 ⁄
2
” u-clamps is used to secure the rearmost
hanger for the tailpipe.
28.
replace the factory plastic air inlet duct
with the banks ram-air super-scoop,
provided. transfer the plastic fitting and clip from
the old duct to the new duct.
29.
place carb emissions information sticker
on an underhood sheet metal panel in a
conspicuous location where service personnel or
inspectors may view it.
30.
start engine and listen for any exhaust
leaks. tighten bolts or clamps to correct
leaks as required. allow engine to warm up and
test drive vehicle.
NOTE: Exhaust tubing will smoke for the first 15-20
minutes of operation. This is normal, as grease used
in the bending process will burn off the inside of the
pipes.
31.
three banks powerpack plaques have been
included in your kit. these may be affixed
to your vehicle by pealing off the backing and
pressing firmly in the desired location. a piece of
masking tape applied to the vehicle with reference
measurements to other emblems or body trim
may be used to level and locate your plaques.
Figure 7 shows suggested locations for plaques.
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