K 2500 3/4 Ton Pickup 4WD L6-292 4.8L VIN T 1-bbl (1982)
Distributor: Application and ID
HEI distributors with EST can be identified by the following;
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They have no distributor mounted vacuum controls--spark timing is controlled electronically.
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With EST system uses a seven terminal High Energy Ignition (HEI) module