67 Dart 270...Project Old School

Funny you should mention this. I was running the Summit Racing electronic conversion kit and it was doing all sorts of intresting things. One of the things the box was doing was retarding the timing roughly 10 degrees as the motor rev'ed up. I found all this out when I was trying to recurve the distributor. I would see the distributor give me advance and then the box retard it. I bought an Autozone replacement box and automagically the timing retard on the top end disappeared. The car would rev clean to 5000+ rpm. Granted, it still doesn't make any real power past 4000-4500, but it will rev to 5000+ now.

joeboy said

Just a thought...

I had issues with my dart at the track doing the same thing you described with yours (falling off at 4500-5000), it ended up being the mopar ign box was bad, and wasnt producing enough spark at the top end. I upgraded to a nicer mopar box and problem solved. I know that is the least of your concerns now... Keep up the good work on that motor...

JOE

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