Re: AC 43LS Spark plugs

Posted by BH On 2007/4/17 22:33:32

Prior to the advent of resistor type spark plugs and wires, there was a carbon rod built into the rotor - at least in the V8s - for radio noise suppression.

I always felt that resistor plugs with an OE type rotor, and especially with modern resistor type plug wires, might add up to too much resistance.

However, there are rotors out there for an 8-cylinder Declo distributor that do NOT have that carbon rod. Though I do not have any part numbers, I suspect those are from an earlier application as there were significant changes in the design of the Delco distributor for 1957. It would be interesting to see what effect such a rotor might have with your resistor type plugs.