Spark Duration vs Mj of Energy
The small gap .020" will increase the Arc Duration and with a powerful coil like the IGN-1A, the Arc can exceed 30* of crankshaft rotation.
A waste of energy.
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If you would excuse any ignorance on my part, would your coil show any performance improvement on a "bread and butter" situation such as the stock LM7 in my Tahoe? About 9.6:1 compression, 290HP.
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This will cause miss-fire at low RPM.
The answer was to spark many times at low RPM.
The normally LS engine uses a short spark plug wire.
When a SPW of 250 Ohms or higher is fitted, the spark will last longer.





