77 Z28 Stock Tach Out 500 rpm

77ZDER

Member
Dec 5, 2006
36
Ontario Canada
Hi
I have a 77 Z28 with original gauges. I also have an MSD street fire distributor, MSD 6AL-2, and MSD 8920 Tach filter. I have connected everything according to the instructions and the car runs great. The problem I have is that the tachometer is out 500 rpm. It doesn't make a difference when the filter is connected or not, both give the same results.
Any advise would be appreciated...
Thanks
Dave
 




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