Vortech 1993-1997 5.7L LT1 F-Body - Manual (Page 30)

P/N: 4GH020-010
©2003 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
05NOV01 v1.2
(4GH V1.2)
18
A. Remove the two center bolts that secure the
driver's side valve cover.
B. Install the FMU with the fittings pointing
upward (towards the center of the engine)
using the valve cover bolts.
C. Disconnect the fuel return line at the fuel rail
(smaller line) using a spring lock disconnect
tool.
D. Connect the 1/4" x 14" fuel line to the center
fitting on the FMU and then snap into the
return line running to the tank. (See
Figure
18-c .)
E. Attach the 1/4" x 10" fuel line to the 90
°
fitting
on the side of the FMU and snap it into the
return fitting coming from the fuel rail.
F. Using the supplied 5/32" vacuum line and
TEE, splice into the bypass valve vacuum
line. (See
Figure 18-b .)
FUEL
FEED
LINE
FUEL
TANK
STANDARD
PUMP
ADDITIONAL
FUEL PUMP
FUEL
RETURN
LINE
FUEL
MANAGEMENT
UNIT (FMU)
ENGINE
FILTER
INTAKE
MANIFOLD
FRONT
BYPASS
VALVE
FMU
ORIGINAL
VACUUM
LINE
IMPORTANT!: Pressure check the entire fuel
system to confirm that each
fitting has a leak-free con-
nection. Make sure fuel lines
are routed away from hot
exhaust pipes and moving or
sharp objects.
Figure: 18-a
Figure: 18-b
Vacuum Diagram Figure: 18-c
18. FUEL MANAGEMENT UNIT (FMU) INSTALLATION