Removing spark plug wires is rather easy. All a person needs to do is grab the top and the bottom of the cable wires firmly and pull.
0.060 Plug gap.
.060
.40 gap
0.035
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The 1998 Chevrolet Silverado V-8 engine spark plug gap is .031. Most spark plugs come pre-gapped from the spark plug manufacturer.
.035
0.060 inch
.035
I believe it is 45
0.060
,030"