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Old 10-11-2009, 12:53 AM   #1
hiway
Mad Scientist
 
Join Date: Jul 2005
Location: Enola Arkansas
Posts: 380
78 tach reading double

78 factory tach, 454 swb truck
Tach reads really hight...like double. Any ideas. Everything seems to be in place, even some type of thingy in the wire leading to dizzy cap.
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