"Canadian" Plymouth flathead specs?

[Rusty O'Toole]

"I am also a big fan of Megajolt distributorless ignition. I happen to have a unit here that would allow me to run coilpacks from a later model car, and provide a fully mappable ignition system. I've used it on other carbed cars, and the change in the way the car runs is amazing.)"

This is very interesting, the Megasquirt and Megajolt idea interests me but have never used them. Would be interested in your experience.

There is nothing wrong with changing to 12 volt if you know what you are getting into. I try to discourage newbies who think it is easier to convert to 12 volt than to fix a 6 volt, it isn't. In your case it sounds like you know what you are doing.

[Broke4speed]

Yep, I'm one of those sick people that actually ENJOYS cuddling up with a multimeter for a few hours of tracing and troubleshooting.

My experience with Megajolt ignition was on my 1983 Rabbit running a 1.8 8v with dual sidedraft carbs. For a while, I was running the factory electronic ignition, with decent results. The carbs were emissions-spec Dellortos, with a great idle/cruise circuit. It would idle well (stock-ish cam), get 25-30mpg, and made great power/tq (105whp/119tq). When I switched to Megajolt...everything changed. By switching to coilpacks, I could lean the idle out by a full turn and a half on the mixture screws, and still have a smooth idle. I liked to set the idle at 1200 to help overcome a flat (lean) spot off idle due to the emissions carbs, and I found that I could set my idle back to stock and still eliminate the flat spot. I had my plugs gapped at 0.050", and managed to get 32-34mpg .

For S&Gs I decided to put in the Colortune, and the mixture color was bang on, even with the changes to the screws.