Banks Power Ford Motorhomes: (Gas ’93 - 98 7.5L Class-A) PowerPack System (Class-A, Ford chassis, non-cat) For Use w_ 460 EFI Engine - Manual (Page 11)

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22.
Install 28” intermediate pipe in outlet
of primary muffler. Install 3” U-clamp to
secure pipe in muffler. Install 3” hanger
clamp on intermediate pipe to support
muffler. See Figure 9 .
23.
The Ford class “A” Motorhome chassis
is supplied in several wheelbase lengths.
The standard length is 178” wheelbase.
Longer wheelbase coaches will require
an additional extension pipe. These are
available from Gale Banks Engineering
in a 33” and 53” length to fit 208” and
228” wheelbase coaches, respectively.
Other wheelbase coaches may be
accommodated by cutting one of these two
extension pipes.
Extension pipes are required to fit
wheelbase lengths as follows:
A. 178” wheelbase
No additional extension pipe required (use
28” extension pipe supplied in all kits).
B. Up to 208” wheelbase
Requires 33” additional extension pipe.
C. Up to 228” wheelbase
Requires 53” additional extension pipe.
D. Up to 258” wheelbase
Requires 33” and 53” extension pipes.
Install the appropriate additional extension
pipe(s) if required. Wheelbases other
than 208 or 228 inches will require that
the extension pipe be shortened. Add
additional 3” hanger clamps (available from
Gale Banks Engineering) as required to
support extension pipes in factory rubber
hangers.
24.
Install the secondary muffler on
the intermediate pipe or extension pipe.
Support rear of muffler with muffler hanger
U-clamp provided. See Figure 11 . Do not
tighten hanger clamp at this time. Install,
but do not tighten 3” U-clamp at muffler
inlet connection.
25.
Install tailpipe over rear axle and into
muffler outlet connection. Insert tailpipe
hanger pin into factory rubber hanger.
Rotate secondary (rear) muffler as required
to best align muffler with tailpipe and
intermediate pipes. Once alignment is
determined, tighten clamps at muffler inlet
and outlet connections. Hanger clamps on
intermediate piping may be loosened and
readjusted if necessary. See Figure 11 .
FIGURE 10