Factory A/C spark plugs. Put the plug in it that it calls for are Chevy would not have used them if they weren't a good plug.
0.060 inches
I believe it is 45
0.060
.045
0.035 in.
0.035
The no 1 spark plug for a 1992 K1500 pickup 5.7 liter engine is the Bosch spark plug. As of 2013, the average price of a Bosch spark plug is $64.99, plus tax and shipping.
Follow the spark plug wires, they will lead you right to them.
gap is .060
0.035
try www.haynes.com