Spark Curve

When swapping distributors, will the spark curve be right?

Actually, the weights and curves from a stock A12 distributor are not right for performance. You should calibrate every distributor if you want maximum performance.

Otherwise, yes it will run as-is no problems. Set the static initial timing to 5 degrees BTDC for USA distributors, as they have MORE advance than non-USA distributors (which are set to 7 degrees initial). Likely you could go up to 7 or 9 degrees, but it depends on the tolerance of the individual distributor and your specific engine. In other words, don't let it ping.

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Spark Curve