Edelbrock Pro-Tuner, User Manual

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nut. Connect a length (at least 4 inches) of flexible return line (rubber or braided hose)
to the fitting end. Connect the return line to the fuel pickup line using tie wraps.
NOTE : THIS METHOD REQUIRES NO WELDING OF THE FUEL SYSTEM.
NOTE : Whichever method you use to install the return fuel line, be careful to keep
the end of the line away from the fuel pickup, as shown. Otherwise, aerated return
fuel can be drawn into the pickup.
Figure 5
HARD RETURN LINE METHOD
Drill a 5/16-inch hole in the sending unit plate adjacent to where the main line, enters
the tank. This will be the hole for your return line. Insert a length of 5/16-inch hard line
(available at most radiator shops) into the hole and weld it to the sending unit plate. The
hard line should extend through the hole 1 to 2 inches on the outside of the plate. On the
inside of the plate, the hard line should follow the contours of the fuel pickup line. Bend
the end of the return line away from the sock on the end of the fuel pickup line.