Banks Power Chevy_GMC Trucks: Gas ’99 - 14 4.3,4.8,5.3,6.0,6.2,8.1 Exhaust- Torque Tubes System '99-08 GM 4.8L, 5.3L, 6.0L & '09-10 GM 5.3L Pickups & SUVs - Manual (Page 4)

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96410 v.4.0
5.
Unbolt air injection tubes
(if equipped) from the exhaust
manifolds. Save all hardware for
reinstallation. See Figure 2.
6.
Disconnect spark plug wires from
spark plugs. Pull boots off with a
twisting motion.
7.
Unbolt the exhaust manifolds from
the cylinder heads. Save the stainless
steel exhaust manifold gaskets for
reinstallation.
8.
On each side of the engine, unbolt
the exhaust manifold outlet flange, then
remove exhaust manifolds.
Note: Disconnecting the steering shaft
at the u-joint bolt may simplify removal
of the exhaust manifold. Draw a line
across the steering shaft (firewall side)
and knuckle u-joint. See Figure 3.
Remove the knuckle u-joint bolt. Make
sure not to swivel the steering shaft nor
knuckle u-joint when disconnected.
9.
Remove the stock ring gasket
attached to the driver side Y-pipe.
Note: the ring gasket will be replaced
with a supplied ring gasket in a later
step.
10.
Inspect the exhaust outlet surface
on the cylinder heads and remove any
debris that might prevent the new
manifolds from sealing.
Note: Inspect the gasket and check for
evidence of exhaust leakage. If gasket
is leaking then replace original gasket
before installing the Banks torquetubes.
11.
Place a small amount of anti-seize
compound on the threads of each
of the supplied 12-manifold Flange
hex bolts. When installing the bolts
be careful not to cross thread in the
aluminum threads of the cylinder
head.
12.
From under the vehicle, install
the Banks TorqueTubes manifold on
the cylinder heads using the original
gaskets and supplied 8mm flange hex
bolts.
Figure 3