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Wiki User
I have an 84 305 and everything says 45, and uses r45ts plugs
0.045"
Per Champion spark plug applications chart, the gap for 1989 Chevy 305 (5.0L) is .035.
The Spark Plug gap is .045
.045"
.045
.035
.45
The recommended spark plug gap on a 1996 Chevy C1500 with a V8-305 engine is .060"
0.60 gap