Vortech 1996-2000 4.3L Truck/SUV User Manual

Page 9

P/N: 4GD020-010

26APR01 V1.2

(4.3L V-6/S-10-(4GD))

4. MAIN BRACKET

A. To accommodate the relocation of the alternator onto

the new main bracket, the brown field wire must be
extended approximately 12”. Proceed by cutting the wire
approximately 4” from the factory plug that attaches to
the alternator. Splice the supplied piece of brown wire
into the cut wire by soldering. Use the supplied piece of
heat shrink tubing to seal the joints. Re-wrap the wire/
harness with the supplied length of plastic flex-loom.

B. The transmission cooler lines may need to be bent

downward as far as possible (toward the frame) to
obtain alternator clearance.

C. Attach the supplied stainless steel heat shield onto the

rear of the Vortech main bracket using the supplied 1/4”
hardware (see

Fig. 4-a).

D. Following Figure 4-d, cut the supplied protective sleeve

as shown. Slide the protective sleeve onto the air
injection adapter, following with the 90

compression

fitting. Do not tighten compression fitting yet. Mount
this assembly to the exhaust manifold using the supplied
hardware and stock gasket (replace in necessary).
Torque bolts evenly using a 5mm hex wrench. (See

Fig.

4-e.)

E. Thread the factory check valve onto the compression

fitting and tighten. Referring to

Fig. 4-e, angle the

compression fitting slightly upward, then tighten. Use
one wrench on the compression fitting and one on the
nut to protect the air injection adapter from damage
while tightening the compressing nut.

F. Attach the supplied 5/8" x 24" hose to the factory check

valve and to the TEE coming from the air injection pump
and secure.

G. Cut factory lower radiator hose as shown (see

Fig. 4-c).

Install the supplied 90

steel tube and secure using the

supplied #24 clamps (see

Fig. 4-b).

H. Place the mounting bracket on the front of the passenger

side cylinder head. Line up the bracket with the holes
on the front of the head and block and start the 3/8-16
socket head bolt into the lowest bracket hole. Install
the two 3/8-16 x 1.00” bolts and washers into the two
remaining upper holes. Torque the three bolts evenly.

Place the alternator in position on the bracket and check
for clearance between the air injection adapter and the
back cover of the alternator. In some instances, it may
be necessary to remove the cover and trim a small
portion of the cover before final mounting.

Fig. 4-a

INSTALL 90

RADIATOR PIPE

Fig. 4-b

TO WATER PUMP

TRIM STOCK HOSE

AND INSTALL 90

TUBE

LOWER

RADIATOR

CA 2000 Models Only

Fig. 4-c

Fig. 4-d

4GD110-070
ADAPTER
ASSEMBLY

7S625-000 HEAT SLEEVE

AFTER TRIMMING

DISCARD

INCISION LINES

7S625-000 HEAT

SLEEVE

.750

.500

1.00 0