Installation Instruction Manual

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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Important: Read these instructions before attempting the installation.
Note: An MSD Ignition Control is required to use these distributors. 
Par ts Inclu ded:
1 - Pro-Billet Distributor
1 - Rotor, PN 8467
1 - Distributor Cap, PN 8433
1 - Wire Retainer
2 - 1.5" Self Tapping Screws
2 - 10-32 x 3/4" Socket Head Screws
Note:The terminals of this Distributor require spark plug style terminals. You mayneedto changethe 
terminals and boots of your wires. MSD offers two kits, PN 8849 or  PN 8848 that are supplied with nine 
boots and terminals.
TIMING FUNCTIONS
Before continuing with the installation, here are a few definitions you should be aware of:
Initial Timing: This  is  the  base  timing  (also  referred  to  as  idle  timing)  of  the  engine  before  the 
centrifugal advance begins.
Centrifugal Advance:  The centrifugal (or mechanical) advance mechanism is made up of weights, 
springs, advance cams, and  an advance stop bushing. The amount and rate of advance that your 
distributor is  capable  of is determined  by  the centrifugal timing.  If you ever  wish  to lock out  the 
centrifugal advance, refer to the centrifugal advance section. 
Total Timing: Th i s is  the  total of  the  init i al  timi n g plus  the centri f u gal  ad v a nce  add e d toget h e r. 
Example:  10° Initial + 25° centrifugal =  35°  Total Timing. (When checking Total timing, disconnect 
the vacuum canister and plug the vacuum source.)
Vacuum Advance (Hemis Only): The vacuum advance  will advance  the timing  up to  10° during 
partial throttle driving (with 15 lbs. of vacuum). The vacuum line should be routed to a ported vacuum 
outlet above the throttle plates.
Note:MSD Distributors are supplied with the heavy (slow) advance springs installed. Thisis to prevent 
detonation in certain applications. Review the information on pages 2-4 to determine the best advance 
curve for your application. 
1 - Advance Kit
1 - O-Ring
1 - Vacuum Advance Lock-Out Kit
(Hemis Only)
WARNING:Beforeinstalling theMSD Distributor, disconnectthe battery cables. When disconnect-
ing the battery cables, always remove the Negative (-) cable first and install it last.
MSD Pro-Billet Chrysler V8 Distributor
PN 8534 - 273, 318, 360
PN 8543 - 331/354 Early Hemi
PN 8544 - 392 Early Hemi

Summary of content (8 pages)