Jacques....
According to Nisonger (Instrments), there are some sensitivity issues
with some tachs. when using a PerTronix.
As I understand it, the points type ignition
our LBC's initially came with put out a
stronger pulse to the tach., then the PerTronix HED. This is especailly
noticeable by the tach at higher rpms
in terms of accuracy...IOW, it shows
less than what the engine is actually
turning at higher rpm.
Nisonger uses a different value of
whatever it is that picks up the impulse
which cures the problem.
Give them a buzz and they will most
certainly help you out...nice people.
www.Nisonger.com
Cap'n. Bob
'60 :{)
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