It's highly unlikely that a 1982 would have points, but the dwell would be 30 degrees.
0.4mm
The gap for spark plugs in a 96 GMC sierra is .60
Ford Sierra was created in 1982.
plug =ACCR43TS 1995 SIERRA 5.7L V8. PLUG GAP= 0.90MM OR 0.035 INCH.
What is the spark plug gap for a 2006 GMC Sierra 2500 , 6.0 L
The gap for 350cu is .035 of an inch
the gap is 35 thousandths
Dist. Points gap is .016" (0.4mm)
Spark plug gap should be .060
.40
gap is .035
.035