After talking to three machine shops, I learned that the distributer mechanical advance can be adjusted by a shop to give a fairly linear ramp in advance vs rpm for about $50. They actually have a machine dedicated to this work. From what I hear, Pontiac did not pay much attention to the ramp curve. This is a performance issue if you want to get the most horsepower out of your engine and is probably not mandatory for a street machine. However, now that I know that the weights and springs can be adjusted for a linear performance curve, I plan to have it done while my goat is laid up for the winter.
Bob
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