10-21-2003, 06:38 PM
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CC Member
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Join Date: Aug 2002
Location: Dacula, (Atlanta),
GA
Cobra Make, Engine: Unique 427 SC, Southern Automotive 427W Stroker
Posts: 1,649
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Not Ranked
Tach accuracy question
I'm running the MSD 6A contoller, MSD distributor and coil. My SW tach has operated correctly in the past, but when my engine was replaced, a new MSD distributor with a smaller diameter cap (the old distributor interfered with the new intake manifold) was installed. Now my tach has a 1,000 RPM higher reading and it won't zero. The tech at MSD told me that I needed an MSD 8920 tach adapter ($50) to fix the problem. Does this make sense? The wiring went back the same way it came off and the parts are still all MSD. I hate to drop the bucks if I don't need to. Any suggestions?
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After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
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