Garys69

I recently modified the stock points/condensor distributor on my 69 SB with a Pertronix electonic ignition kit. I went ahead and bought the "Flame Thrower" coil that is designed to work with this module. The "Flame Thrower" touts a voltage output of 40,000 volts. I think the original AC Delco stock coil is something like 30,000 volts. I went ahead an upgraded the plug wires to 8mm high performance because of the increased coil output. My question is, should I continue to use the stoc, factory recommended plugs. In this case they are AC R44. I read something to the effect that with the higher coil voltage, the spark plug gap could be increased which would result lin a longer spark path equating to a hotter plug???? Can I simply use the stock plugs gapped at the factory recommended .035" ???

BlueL36

I'm going to convert mine to the Breakerless SE system this Spring, and from what the folks I'm purchasing the unit from have said, stock plugs and gaps are recommended. Nice color, btw :seeya

JIM

Throw away those plugs they are extremely cold. I know they are cross referenced with other numbers (and mfg's). Go to a speed shop and buy some accell or ngk plugs in the proper heat range. A warning though they cost more than the 99 cent ac delcos.

vettfixr

I changed over to AC Rapidfire plugs and have been very happy with them. You should stick with a stock plug and gap.