Banks Power GM Motorhomes: (Gas ’82 - 95 7.4L) PowerPack system (EFI TBI, P30 chassis) - Manual (Page 12)

12 P.N. 96354
Remove the shield and spread it open enough so it can be
slid onto the new Banks Dynaflow™ Muffler. Attach shield
with two No. 136 hose clamps. See Figure 13 for shield
orientation. (NOTE: gap in shield should point down when
installed in vehicle.)
Install the Dynaflow Muffler on the exhaust head
pipes. See Figure 1 for details on muffler hangers
and brackets. Leave the muf fler U-clamps just loose
enough to allow adjustment of the muffler’s position as
required, then snug clamps. See Figure 13 for orientation
of muffler inlet connections.
Re-install the oxygen sensor in the bung on the left
head pipe. Use a small amount of the anti-seize
compound on the threads.
Working from the muffler back, install the catalytic
converter (and optional heat shield), then install the
tail pipe sections most appropriate for your vehicle.
Because of various chassis lengths and configurations,
your tail pipe hangers may or may not line up properly for
the tail pipe routing. We have provided three 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 14. See Figure 1. for tail
pipe 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 and heat
shield per Figure 1 . Extension tip may be slid in
or out over tailpipe until desired length is obtained for
body width.
Because of t he high exhaus t temperatures in
c a t a l y t i c c o nve r t e r s ys t e m s , a d d i t i o n a l h e a t
shielding is necessary to protect the fuel lines where they
are in the vicinity of the exhaust piping. Wrap the 6 x 14"
aluminum heat shield blanket around the fuel feed and
return lines where they pass from the right frame rail over
to the engine/transmission (above the exhaust piping). Use
wire ties to fasten the heat shielding to the fuel lines.
Use the remaining 7 x 24" heat shield to wrap the
fuel lines in the right frame rail in the area adjacent
to the right head pipe and exhaust manifold. Let the heat
shield extend 4 to 6" rearward of the point where the
head pipe bends toward the center of the vehicle. Fasten
with wire ties.
If at all possible, route electrical wiring in the engine
compartment as far away from exhaust manifold
piping as you can, 8" or more is preferred. Plastic sleeve
material over wire bundles is particularly sensitive to heat.
Reinstall inner fender panel and replace interior
engine cover.
F O R M O T O R H O M E S E Q U I P P E D W I T H
E L E C T R O N I C 4 - S P E E D A U T O M AT I C
TRANSMISSION ONLY:
Reconnect the battery cables. 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 vehi-
cle. NOTE: Exhuast 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 pipes.
FOR MOTORHOMES EQUIPPED WITH 3-SPEED
AUTOMATIC TRANSMISSION ONLY:
To fully utilize the tuning of the Banks PowerPack, the shift
governor in the automatic transmission must be recalibrat-
ed to raise the vehicle’s shift points in relation to vehicle
speed. The shift points are changed by installing lighter
springs in the transmission governor. Because there are a
36.
35.
34.
33.
32.
31.
30.
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28.
FIGURE 13
FIGURE 14