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Old 04-01-2021, 01:18 AM   #4
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Join Date: Mar 2020
Location: Washington State / the Left Coast
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Vehicle: 89' D21 KC SE V6 5spd 2WD - 87' D21 KC SE V6 5spd 2WD
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Can't help with the tach... but I use a Garmin to tell me my speed. Far more accurate.

I suspect you'll need one from a 4cyl, for everything to work properly.
. . . Factory Service Manuals:
Originally Posted by Deerhurst
What he is saying is the aerodynamics of a D21 is a brick in the wind.
Probably at least as bad as a Jeep so worse than a cow.
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