Ignition Timing: Specifications

Time models with carburetors as indicated in Fig. 4-9.

Time 1983 and 1984 cars sold in the U.S. with manual transmissions and 1983 Pickup Trucks sold in California with manual transmissions as indicated in Fig. 4-10.

Time all other U.S. and Canadian models as indicated in Fig. 4-11 (manual transmission) or Fig. 4-12 (automatic transmission).

Fig 4-9:

Fig. 4-9. The 7.5° BTDC mark on flywheel of 1980 carburetor engine correctly aligned with pointer in timing check hole. On 1982 through 1984 carburetor engines, set timing at 2° BTDC as marked.

Fig 4-10:

Fig. 4-10. The 6° BTDC mark on flywheel correctly aligned with pointer in timing check hole: applicable to all 1983 and 1984 U.S. cars with fuel injection engines and manual transmissions, and to 1983 Pickup Trucks sold in California with fuel injection engines and manual transmissions.

Fig 4-11:

Fig. 4-11. The 3° ATDC mark on flywheel correctly aligned with pointer in timing check hole on fuel injection engine used with manual transmission (except 1983 Pickup Trucks sold in California and 1983 and 1984 cars sold in the U.S., including California).

Fig 4-12:

Fig. 4-12. The 3° ATDC mark on drive plate of fuel injection engine used with automatic transmissions correctly aligned with pointer in large hole in bellhousing.