.045 gap
60 thousandths or .060
60
.045 " is the correct gap.
Spark Plugs .035Points .019Plugs--AC/Delco R43N
0.035 inches for CR43TS or R43TS AC Delco spark plugs
Depends on what size and year engine it is installed in.
Use a Ac/Delco PF61
When you buy your AC-Delco recommended spark plugs, the person who identified the spark plugs for you at the parts shop can find the gap on the computer he used to identify, and gap them for you. Most cases, the spark plug is already gaped because it is matched with the car, especially if you buy AC-Delco Plugs as the manufacturer suggests.
You should always check the gap to make sure a plug hasn't been dropped on the end and changed the gap.
AC delco is just a brand, nothing more.
pf59 AC Delco