VITC_GTX
I have a 383 with a mild Mopar .474 lift cam. Timing wise, I’m running 24 initial and 36 total with one light and one medium spring to advance faster, plus vacuum advance. I believe you’re solution will be found in dialing in the timing.
Ron
Thanks. The bump up to 19 really helped it and I'm fairly happy with it now. I'll still try and tune it up a little more in the future.
Adding to your initial timing with out limiting the total timing to 34 - 36 degrees will give you too much timing well over 36 degrees. When you hook the vacuum pod up to manifold FBO can explain why you time these cars was way and can help in getting your distributor set up right. vacuum, you will get even more power off idle and just better mileage and performance off idle. vacuum advance
Most Mopars, especially with larger than factory spec cams will need more initial timing. Yours is sounding like its pretty close at 19. You use a vaccuum gauge to find the sweet spot, You are looking for the highest reading. Once you find what your combo need to reach the highest level of vacuum, you now have to shorten the amount of mechanical advance to limit the total timing added to keep that between 34 and 36 degrees.
Another often misunderstood way to increase off idle power is to use manifold, not ported vacuum. You can also fine tune both the range or amount and how much pressure it takes to change the vacuum pods range of motion. manifold vacuum advances the timing at idle and falls away as the throttle is opening to reduce the timing and avoid detonation. This set-up absolutely woke up my Slant six super six.
