Edelbrock 3550 - Manual (Page 24)

24
Pro-Flo EFI Installation Instructions
©2005 Edelbrock Corporation
Brochure No. 63-0115 Rev. 10/05
DISTRIBUTOR TESTING
Before re-installing the distributor, test to ensure that the conversion has been performed correctly.
1. Install the ECU and wiring harness and make all connections except the distributor.
2. Disconnect electrical connections at the fuel pump. Unplug the 10-foot fuel pump harness from the Main System Harness. Refer to the MAIN
SYSTEM HARNESS section of this manual for details.
3. Turn the key to the ON position without starting the engine. Check that the Idle Air Control (IAC) solenoid clicks on and off for approximately 2
seconds.
4. The Pro-Flo Calibration Module will receive power and display an RPM: 0 reading, among other parameters.
5. Connect the distributor to the wiring harness and spin the distributor gear by hand. If the
distributor sensor is operating properly, the Calibration Module will display an RPM
reading greater than 0. When the distributor stops spinning, the Calibration Module may
display NO COMMUNICATION for approximately 2 seconds. This is normal and indicates
that the ECU is waiting for the next distributor signal before the allowed time expires.
6. If an RPM greater than zero is indicated in step 5, re-install the distributor.
REINSTALLING THE DISTRIBUTOR
1. Make sure that the distributor sits completely down on the manifold boss and that the
drive gear has fully engaged the oil pump drive.
2. Lift the rotor by hand to make sure that there is adequate endplay. Lack of endplay
indicates that the rotor shaft is bottomed out on the oil pump shaft.
3. Gaskets may be added at the bottom of the distributor shaft above the drive gear to
adjust the endplay on either large cap or small cap distributors. Add gaskets one at a
time, checking that the rotor shaft maintains sufficient endplay to prevent damage to the
bushings. Recommended endplay is between 0.015- and 0.030- inch.
4. Adjust the housing to ensure that the leading edge of the narrow shutter wheel tooth is
centered in the Hall effect sensor when the engine is at 10° BTDC on #1 cylinder.
5. Lightly tighten the hold down clamp so that the distributor can still be turned to
determine final setting when checking the timing
6. Re-attach the distributor cap, with the rotor pointing towards the No. 1 terminal.
7. The distributor is connected to the Main System Harness with connector J12.
8. A short ignition harness connects the distributor cap to the ignition amplifier, and to
ground at the rear of the cylinder head. A second connector connects the distributor cap
to a 12 volt vehicle source, Start/Run source (the BAT terminal on the HEI). Refer to
page 23 the MAIN SYSTEM HARNESS section of this manual for more details.
IGNITION AMPLIFIER
The Pro-Flo system uses the Edelbrock #3518 Ignition Amplifier, which must be mounted on a
flat surface in the engine compartment away from exhaust headers or other areas that
generate heat. The wheel well panel and firewall are ideal locations. The ignition amplifier
features three connectors. One connector connects to the amplifier. Of the other two
connectors, the female connector connects to Connector J26 on the main system harness.
The male connector connects to the 3-foot harness running to the distributor. See the wiring
diagram in the MAIN SYSTEM HARNESS section of this manual.
Narrow Tooth (#1)