Screwed into the heads.
.060 thounsands
It is located where all the spark plug wires attached to the spark plugs go to it.
Want an answer, then provide a model year.
Check for spark & fuel when it's dead and go from there.
HEI should be at .080. If not HEI then .045
Here is 1993 Oldsmobile Delta 88 3.8 liter V-6 since you didn't provide the year of yours. [http://autorepair.about.com/library/firing_orders/bl-fo-8157.htm 93 Delta 88]
crank or cam sensor...did you already figure it out?
On my 1993 Oldsmobile 88, it is number "8"
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