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Old 01-04-2005, 06:51 AM
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ccnova ccnova is offline
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I have a small block in a 63 Nova with aftermarket intake ,carb,cam, headers etc. I use manifold Vac. and a stop plate to limit the amount of vacuum advance to 8*. I set my initial timing with advance unhooked at 12*. With the cam we have it idles a little rough and when you add the extra 8* degrees advance at idle it smooths out and is much more drivable. I have the mechanical advance set up to work right at wide open throttle such as when at the track. You just need to make sure to use an adjustable vacuum advance and have it set to provide the advance at idle and low rpm's but also not so low that it adds at your cruise rpm. This setup seems to work great for us. ccnova
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