MSD 50902 Ford High Speed DynaForce Starter 289, 302, 351W Installation - Manual

MSD DynaForce High Speed Starter
FORD 289, 302, 351W
3/4" Depth, PN 50902
Parts Included:
1 - Starter 1 - Shim Ring 1 - Outer Shim
WARNING: Before installing the DynaForce Starter disconnect the battery cables. When disconnecting
the battery cables, always remove the Negative (-) cable first and install it last.
IMPORTANT: Proper installation of the DynaForce Starter is important to the overall operation. Correct alignment
of the starter pinion with the ring gear is needed to achieve the best operation and longevity from
your starter. Please read the instructions before attempting the installation.
When selecting a starter for your Ford, our research has found that year, model and drivetrain
combination do not always dictate the correct starter. There are variations between the 164 tooth and
157 tooth flywheels and well as the inside diameter of the starter block plate (4.130” or 4.084”). MSD
offers two starters for the 289/302 and 351W engines; one with a 3/8th depth ring gear, one with a
¾” depth. Figure 1 shows the differences and applications.
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
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ENGINE BLOCK PLATE
ENGINE BLOCK PLATE
TRANSMISSION
USE
PN 50902
USE
PN 50901
3/4”
3/8”
RING GEAR TEETH TRANSMISSION STARTER REGISTRY DIAMETER DEPTH STARTER
164 4-speed 4.130" 3/8" PN 50901
164 Automatic 4.084" 3/4" PN 5090
157 4-speed and Auto 4.084" 3/4" PN 5090
Note that these are generally the applications, however there are variables.
Figure 1 Ring Gear Depth and Bell Housing/Engine Block Identification.
Thank you for purchasing the DynaForce High Speed Starter from MSD. Thanks to special gearing
and other design features, the High Speed starter spins 25% faster than our traditional DynaForce
starters. This extra speed is ideal for engines with magnetos or blown alcohol. Please be sure to read,
understand, and follow the instructions prior to installation so that everything goes smoothly and the
engine starts reliably time after time.