1 intake manifold breather – Paxton Superchargers GM 8.1 HD Truck/SUV User Manual

Page 13

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P/N: 4809642

28SEP04(4809642 v1.2)8.1GMTruck

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Section 3

INTAKE MANIFOLD BREATHER/PCV/THROTTLE BODY

GASKET INSTALLATION

Breather Installation:
1.

With the manifold removed, locate and
center punch a location on the rear of
the intake manifold near the base of the
EGR motor. (See Fig. 3-a.)

3.1

INTAKE MANIFOLD BREATHER/PCV/THROTTLE BODY GASKET INSTALLATION

Fig. 3-a

Fig. 3-b

***NOTE***

The baffle and barb will not be installed at this

time to aid the EGR tube re-installation.

PCV Valve Installation:
1.

Locate the small metal breather tube
pressed into the bottom of the cast
manifold. With a pair of pliers, pull out
the metal piece leaving an open hole.
Use a 7/16" drill to enlarge the hole.

Drill a 1/8" pilot hole at the center loca-
tion. Use a 9/16 rota-broach to drill a
hole in the manifold. (See Fig. 3-b.)

Tap the hole with a 3/8" NPT tap to
approximately 1/2" deep or until the fit-
ting can be started.

Apply a small amount of silicone sealer
to the supplied 3/8" x 45° street fitting
and secure it in the hole. Thread the
3/8" nipple into the street elbow. Orient
the elbow and nipple toward the dri-
ver’s side. (See Fig. 3-c.)

Fig. 3-c

ATTACH 5/8" HOSE FROM

180° INLET DUCT

1.8"

.865"