AEM Infinity Supported Applications - Universal V8 Engine User Manual
Page 19
Universal 8
19
© 2014 AEM Performance Electronics
5. With cam trigger magnet in center of sensor hole, check the position of the crank trigger tooth that’s
nearest the crank sensor pickup. If crank trigger tooth is currently inline with crank sensor pickup, the
cam sensor mount will need to be adjusted so that a crank trigger tooth is NOT being sensed by the
crank sensor when the cam trigger is being sensed by the cam sensor.
6. Mark the position of the cam sensor mount collar relative to the distributor housing and then loosen
the two screws securing the collar until it can be moved back and forth.
7. Rotate the distributor in the direction of normal rotation slightly until current crank tooth that was inline
with crank sensor pickup is now beyond the sensor pickup. Continue to rotate the distributor shaft
until the crank sensor pickup is evenly in between the two crank teeth.
8. Hold the distributor shaft in current position and then rotate cam sensor mount collar until cam trigger
magnet is centered in sensor hole. Tighten the collar screws.
9. Rotate the distributor clockwise (from top) until cam trigger magnet is in center of sensor mounting
hole. Cam and crank triggers are in properly relationship if when the cam trigger magnet is centered in
the sensor mounting hole, that a crank trigger tooth is NOT inline with the crank sensor pickup.
Ideally, the crank sensor pickup will be in between crank trigger teeth.
10.Re-install cam sensor to proper height and tighten lock nut.
11.Install distributor. (See
, in this document.)
12.Wiring – note that sensor wiring may be different from what MSD instructions indicate. The Infinity
ECU can only accept falling edge VR/mag wave forms. If in doubt, verify sensor signal with an
oscilloscope.
MSD Cam Sync Distributor
Wire
Desc
Connect To
Wire
Desc
Connect To
Purple
Crank signal +
C1-45 Crk Pos Sens VR+
Green
Cam signal + C1-48 Cam Pos Sens 1 VR+
Orange Crank signal -
C1-46 Crk Pos Sens VR-
Purple
Cam signal -
C1-47 Cam Pos Sens 1 VR-
Note: Use shielded tw isted pair w iring w /drain to
ground.
Note: Use shielded tw isted pair w iring w /drain to
ground.
13.Load MSD 2345 base session and review Setup Wizard. (See
, in this document.)
14.Sync ignition timing. (See
, in this document.)