spark plug gap on 89 s10 4.3

Does anyone know what the correct gap on the spark plugs are for a 1989 s10 blazer 4.3 non vortec? Im doing a tune up on it and cant find the gap distance. I tried to just measure one of the other plugs but the first 3 i tried were all abou 2 tenths off from each other so i dont want to trust any of them. If anyone knows please tell me.

.045 inches.

Thx big help one of my other was .033 and another was .052. And people still wonder why it runs so much better :confused: