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Ignition Timing

Set timing at specified hoi (slow) idle speed, transmission in neutral, and with distributor vacuum line disconnected. Setting may be varied ±2° to suit various operating conditions. 

383" (All) Without C.A.P. 12 1/2° BTDC
  (Distributor No. 2642289) With C.A.P. 5° ATDC
  (Distributor No. 2642363) With C.A.P. TDC
  (Distributor No. 2642367) With C.A.P. 5° ATDC
  (Distributor No. 2642531) With C.A.P. TDC
440" (All) Without C.A.P. 12 1/2° BTDC
  (Distributor No. 2642365) With C.A.P. TDC
  (Distributor No. 2642369) With C.A.P. 5° ATDC
  (Distributor No. 2642532) With C.A.P. TDC
Fig 1: Ignition Timing Marks
G09362123Courtesy of CHRYSLER GROUP, LLC