MSD 2357 Chevy Cam Sync Distributor, Hall Effect, Standard Cap Installation - Manual (Page 2)

 INSTALLATION INSTRUCTIONS
M S D I G N I T I O N
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1. Position the engine at your desired timing.
Remove the existing distributor cap without
disconnecting any of the spark plug wires.
2. Install the O-ring and apply a liberal amount of
the supplied lubricant to the distributor gear.
CHEVY: Install the gasket and apply a liberal
amount of the supplied lubricant to the gear.
(The supplied O-rings can only be used if the
block has been modified as shown in Figure
3.)
3. Install the distributor making sure that the rotor
comes to rest pointing at what will be the
number one cylinder. If the distributor will not fully
seat with the rotor pointing to the marked position,
you may need to rotate the oil pump shaft until
the rotor lines up and the distributor fully seats.
4. Position and tighten the hold down clamp onto
the distributor.
5 . Install the distributor cap and spark plug wires
one at a time to ensure correct location.
6. A wire retainer is supplied to secure the wires
in place. Align the mounting bosses and use
the supplied 1.5" self tapping Phillips screws to
hold the retainer in place.
SETTIng THE CAm SynC PICKUP
The Hall-Effect Pickup is designed to provide an
aftermarket ECU with a sync signal. This signal
must be advanced more than the ignition trig-
ger signal. The amount of advance or lead time
depends on the EFI system being used. Always
check with the EFI manufacturer to determine
the advance required for the cam sync.
For example: An ECU requires 10° of advance.
Your engine will be running total timing of 36°.
Position the number one cylinder at 46° and
align the pickup.
1. Once the distributor is locked in place at your
desired total timing, rotate the engine until
the number one cylinder is positioned at the
required cam sync (If 10° of sync is required
with the engine at 36°, position the engine at
46°).
2. With power going to the Hall-Effect pickup,
adjust the pickup until the light turns off (the
output will be higher). This will be the 10° of
advance for the ECU. It is important to rotate
the pickup clockwise until the light turns on, to
find the edge of the magnet. Then rotate the
pickup CCW just until the light turns off.
3. Lock the pickup sync in position.
INSTALLING THE DISTRIBUTOR
CYLINDER #1
MARK
Figure 2 Marking the Rotor Location.
Figure 3 Modified Block for use with O-Rings.
Figure 4 Rotor Phasing.
DISTRIBUTOR CAP
TERMINAL
ROTOR TIP
FULL ADVANCE
ROTATION
NO ADVANCE
CCW ROTATION