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Re: Tuning Question
you can buy the $14 adjustable one then just drill/tap the flat bar above the slot for a machine thread screw and use a small rectangle flat piece with a slot in it lengthwise to position it wherever you need. I have seen that type of homemade version.
There is a guy who did frequent some forums named David Ray who has a whole write up on doing it. Timing 101 I believe is how its titled.
Here is a chart showing all the VA can part #'s and what amount of advance they provide for both points and HEI dizzys
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