FixVault

Spark Plugs

1975 SPARK PLUG TYPE

Application AC No.
455" R46SX
All Others R44TX
1976 SPARK PLUG TYPE

Application AC No.
350"
  Light Duty R45TS
  Heavy Duty R44TX
400" R44TX
400 & 454"
  Light Duty R45TS
  Heavy Duty R44T
455" R46SX
1977-78 SPARK PLUG TYPE

Application AC No.
305"
  Light Duty R45TS
  Heavy Duty R44T
350"
  Light Duty R45TS
  Heavy Duty (1) R44T
400 & 454"
  Light Duty R45TS
  Heavy Duty R44T
403" R46SZ
455" R46SX
(1) Use R44TX on California models.
1979 SPARK PLUG TYPE

Application AC No.
Light Duty R45TS
Heavy Duty R44T
SPARK PLUG INSTALLATION

Application Gap Torque
1975
  455" .080" 25 Ft. Lbs.
  All Others .060" 15 Ft. Lbs.
1976-77
  403" .060" 25 Ft. Lbs.
  455" .080" 25 Ft. Lbs.
  All Others .045" 15 Ft. Lbs.
1978
  350" Calif. (Heavy Duty) .060" 15 Ft. Lbs.
  All Others .045" 15 Ft. Lbs.
1979
  All Models .045" 20 Ft. Lbs.