FixVault

Ignition Timing

Check or adjust timing with engine at normal operating temperature, distributor vacuum advance line disconnected and plugged, and transmission in Neutral.

Application Timing
318" (Exc. "B" Models)
  W/Cleaner Air System 2.5° ATDC
  W/O Cleaner Air System 5° BTDC
318" "B" Models
  B100 & B200 (1) 2.5° BTDC
  B300 Federal 5° BTDC
  B300 Calif. TDC
318"-3 (Exc. Motor Home) 5° BTDC
318"-3 Motor Home (1) 5° BTDC
360" (Exc. B300) (1) TDC
360" B300 TDC
383"
  Man. Trans. TDC
  Auto. Trans. 2.5° BTDC
413" 1 5° BTDC
(1) Tolerance ±2.5°.