OK, there's this one nagging doubt in my mind about the interchangeability. You might be able to verify if you have your old distrib and the 85 to compare side by side. Check to see if the ratio between the open and closed portions of the vane is different. Because the dwell angle is chosen by the V/C computer, I can't imagine why there would be a change in that trigger ratio, but the fact remains, the 85- distributor has a different part number from the 84 and late 83.
If it would help, I could send you one from 83 or 84, either way.
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Art Benstein near Baltimore
Generally speaking, you aren't learning much when your lips are moving.
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