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Okay, For the past month I have been experimenting with the 90's mopar electronic ignition and a petronix and coil in my stock distributor and a newer mallory built mopar distributor and I have to be frank, the petronix revs up so much quicker than the other two elect. setups! I do have the ballast bypassed on the petronix and I have the orange box with a .8 resistor for the other elct. setups. But with the petronix ignition the timing marks seems to jump around 2-3 degrees with my dial back timing light and it did annoy me. Can anyone explain to me why this is? Thanks, Dave!




There is your first problem , the orange box , it's as big a POS as a cone type suregrip ...

your timing is bouncing around probably due to slop in the distributor to oil pump drive clearances ...