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Old 02-09-2020, 10:13 AM   #18
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
Posts: 8,860
Default Re: Chevy distributor conversion questions.

The little bushings in the advance plate control the amount of advance, the springs the rate. Unfortunately the kit doesn't have a light enough spring, and this is the trickie part, and is best done on a dist machine. or street I use just 16/18 degs total. however this has to work with 6/8 degs of vacuum. Now just to confuse the issue the AF of the carb also plays a roll in the tuning process. Richard spent over a year and many$$$ developing the instruments to monitor the engine through it's operating range. He also developed the adjustable mechanical advance system. Now all this information is free to the rest of the builders of these engines. I'm the keeper of this equipment and hopefully will us it in the future on an inexpensive EFI system. The main reason I/WE share this information is to improve the longevity of your build as poor tuning is one reason these engines didn't last very long, few everlasted 100k. I'd like to keep them around for awhile longer.
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