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Reply to "Progression Ignition distributor - Is it compatible with our tachometer?"

No issue fitting under the screen in my '73 (Blue thunder intake, 3/8" carb spacer, stock air cleaner).
Determining the best timing is exactly the same issue as with a distributor that uses weights, springs, and stop posts except instead of having to pull apart the distributor to make a change, you can tap a screen. You can also do non-linear changes as well which you can't do with weights and springs.
The default settings work very well and I've just experimented with different amounts of timing to get better performance and no pinging/detonation. I'm surprised at how much timing I've added. This, coupled with a wideband O2 and you have a lot of data. Still some time on a dyno WITH A SKILLED TUNER would be a very good idea.

Also, when I was first installing it, I had a question about compatibility with the gear and my Comp Cams roller cam and I called the company and talked to a very helpful and knowledgeable tech.
Overall length and shaft dimensions were perfect out of the box.

Last edited by jmardy
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