AEM Infinity Supported Applications - Universal V8 Engine - Manual (Page 27)

Universal 8 27
© 2014 AEM Performance Electronics
Step 2
Rotate engine to TDC compression for cylinder #1. Verify that engine is at TDC compression by
checking that both the intake and exhaust valves for cylinder #1 are closed. Alternatively, the engine can
be cranked over using the starter motor with the spark plug for cylinder #1 removed. Place your thumb
over the spark plug hole and find where you feel the most pressure in correlation to when the crank
balancer passes the TDC indication to determine that the engine is on the compression stroke.
Step 3
When installing the distributor, the rotor will rotate approximately 45° clockwise as the distributor drive
gear engages the cam gear. Because of this, the rotor must be rotated opposite the direction of normal
rotation by one terminal position before being installed into the engine. With the rotor turned back one
terminal position, check the orientation of the oil pump drive tang at the bottom of the distributor shaft.
Step 5
Slowly lower the distributor into the engine. If distributor does not immediately drop into place, try
rotating the rotor slightly in either direction in order to get the distributor drive gear to mesh with the cam
gear. Additionally, the oil pump drive shaft may need to be adjusted further in order to get the distributor
to drop completely down into the engine.
Step 4
Check the orientation of the oil pump drive shaft in the engine and adjust it as necessary using a long
screwdriver so that the oil pump drive tang on the distributor correctly engages the oil pump drive shaft as
the distributor is installed into the engine.
Step 6
Once distributor is fully installed into engine, verify that rotor is lined up with the cylinder #1 terminal
position while the engine is still at TDC. If rotor is not lined up, the above process will need to be
repeated until it is.
**NOTE** It is highly recommended that the distributor cap have a “window” put into it in order to check
rotor phasing on terminal #1 once the engine is running.