Reply to "Installing Ford DuraSpark Module - Glenn C"

Larry to answer your other question the distributor doesn't make a difference. Of course it should be curved for you motor, and any good shop with a dyno normally has a distributor machine. You wouldn't really know what kind of a curve to put into the distributor unless you determine that with a run on the chassis dyno. MOst shops just throw a generic curve into it, a Chevy curve by the way, and they'll tell you to run 12 degrees initial advance.


If the pre-1977 breakerless ignition module has the same functionality as the DuraSpark modules (ignition retard during cranking) then twisting the white & red wires together runs the module constantly in the "spark retard" mode.

You'll find your pre-1977 module has an extra wire not found in the drawings above, a blue wire.

If you are traveling around North America and have a module failure, drop into "Pop's Auto Parts" on Main Street America for a replacement, the module he is most likely to stock is the DuraSpark II module with blue wiring strain relief. This is the most common module, and the module most often employed in breakerless ignition retro-fits. However, as Ron wrote, the DuraSpark I module, with red wiring strain relief, is the superior module. It was only installed in cars destined for the green state (California) where emission standards were stricter. If you price them, you'll find the DuraSpark I module is quite a bit more expensive, which is why Ford didn't use them in more cars.

cowboy from hell