Vortech 1996-2000 5.7L Vortec Truck/SUV - Manual (Page 16)

P/N: 4GM020-010
©2000 Vortech Engineering, Inc.
All Rights Reserved, Intl. Copr. Secured
14AUG00 V 1.2
(Vortec 350-2 )4GM
9. HEATER HOSE EXTENSION
A. Attach the supplied 5/8” x 24” pre-bent 90
°
hose
to the top water pump fitting (points straight up)
and secure using the factory clamp.
B. Route the new hose over to the existing factory
heater hose modified in step 1. (See Fig. 9-a .) Join
the two hoses together using the supplied 5/8”
coupling and #8 hose clamps.
C. Refill the cooling system with the previously drained
coolant.
10. FUEL MANAGEMENT UNIT
A. Position the fuel management unit (FMU) on the
inside of the vehicle frame, underneath the driver
seat. (
See Figs. 10-a, 10-b.) Mark and drill two #16
holes. Secure the FMU using the supplied #12 hex
head screws.
B. Separate the factory 5/16” fuel rail return line at the
compression fitting junction underneath the ve-
hicle near the fuel filter. Attach the supplied -4 flare
fitting adapters to each end of the open return line
(one fitting will point toward the rear, and one
toward the front). Connect one end of the supplied
22” FMU hose to the return line running back to the
tank, and the other end to the straight fitting on the
center of the FMU. Connect one end of the remain-
ing 36” FMU hose to the return line coming from
the fuel rail, and the other end to the 90
°
fitting on
the side of the FMU (see Fig. 10-c ).
C. Secure the lines away from abrasion using the
supplied tie wraps.
D. Tap into the supercharger bypass valve vacuum
hose using the supplied 65” long length of hose
and 5/32” brass TEE. Route the hose in a manner
that will keep it away from exhaust heat and will
allow gentle bends without pinching. Attach the
hose end to the lid of the FMU.
8
5/16” LINE
FROM RAIL
VACUUM LINE
TO MANIFOLD
5/16” LINE
TO TANK
FMU OUTLET
(TO TANK)
FMU INLET
(FROM FUEL
RAIL RETURN)
MOUNT TO FRAME
INSTALL NEW HOSE
FUEL PUMP
HARNESS
FMU
Fig. 10-a
Fig. 10-b
Fig. 10-c
Fig. 9-a