theyre pre gapped otherwise it depends on engine specification
0.035 plug gap
18436572
should be .035
.035 gap standard and stock
The diagram.
The spark plug gap for a 1991 Chevy Silverado 2500 V8-350 is .035, according to major spark plug manufacturers (i.e. Autolite, Bosch, Denso, NGK).
0.035"
0.45 inch
4.3? Follow the spark plug wires from the spark plugs, they will lead you right to the distributor.
Spark plug gap chevy ls blazer
.035
There is no spark plug cap located on the 1993 Chevy Blazer. The spark plug gap for this vehicle varies depending on the type of spark plug that is used. The OEM spark plug gap for this year is 0.040.