MSD 50953 Chevy High Speed DynaForce Starter 10 Pitch_139 Tooth Installation - Manual (Page 3)

INSTALLATION INSTRUCTIONS 3
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
Figure 5 Wiring the Starter.
INSTALLATION INFO
INSPECT PINION GEAR
After cranking the engine several times, you can inspect
the witness pattern on the pinion gear. The pattern should
show 1/4" to 3/8". If over, the internal shim is required.
See Figure 3.
NOISE
If there is a high pitch whine during cranking, the pinion to
ring gear engagement may be out of specification, on the
high side. If there is a whine after cranking there may be
too little of clearance. The gear mesh spec is .020"-.035"
(Figure 4).
SLOW CRANKING
The most common cause is due to low input voltage. The
battery should be checked, but also inspect the battery
wires, terminals, connections or switches.
DISCONNECT SWITCHES
Most sanctioning bodies require an emergency disconnect
switch. Be sure to use a heavy duty switch that is capable
of handling high current. Some starters may pull over
700 amps while cranking. Most disconnect switches are
rated at continuous and intermittent amps. Make sure to use a switch that exceeds your starting and
electrical system requirements.
CAST IRON STARTERS
The MSD DynaForce Starter is meant to replace factory starters that were equipped with a aluminum
front housing (nose). If your original starter was cast iron, more shims may be required to achieve
proper ring gear engagement.
Figure 6 Pinion Gear Pattern.
THE CORRECT PINION DEPTH
SHOULD MEASURE 1/4” to 3/8”.
Image of starter
needs to be more
Chevy like in
this case.
image on page 1
or this....
and
should it be the
square thingie
BATTERY
+ -
LENGTH 3’ 5’ 7’ 10’ +10’
AWG 4 2 1 0 00
CABLE LENGTH VS. GAUGE
12-GAUGE MINIMUM
TO IGNITION
SWITCH