.060
.035 gap standard and stock
The order is on the stock intake manifold. It is 1,8,4,3,6,5,7,2
If it is a stock original engine and ignition system the gap would be .035".
Be specific what engine? what vehicle? I know of no knob on a stock 1980 chev is it stock?.......
If it is the stock engine, when you buy the plugs, the parts person can give you the gap. Many of the newer type spark plugs are pre gapped so you dont have to do anything to them. Hope this helps.
A 2002 Chevy duramax has 300 horsepower stock
AC Delco Iridium spark plugs.
gm
stock brand of tires for the 2000 chevy silverado 4x4 ext cab
The OEM spark plug is Denso K16R-U
4"