V8 Ignition Timing: Notes
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Oldsmobile Cutlass Supreme, 1991 Oldsmobile Custom Cruiser, 1991 Chevrolet Corvette, 1991 Chevrolet Caprice, and 1991 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Some engines are equipped with a socket for a magnetic probe timing meter, located 9.5 degrees ATDC. DO NOT use this location for setting timing with a conventional timing light.