Quote:
Originally Posted by DanEC
No - total 36 to 38 initial and centrifugal advance - please read again. That's what my old 427 Chev runs when all the advance is in. Keith Craft ran my stroked 428 up to 40 degrees total advance (initial and centrifugal) on the dyno. That surging sensation is firing the ignition too far in advace of TDC.
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Okay, I was reading it as 36-38 initial plus centrifugal advance. Now it makes sense. I know what causes the surging. When I tune a car and encounter it, I change the vacuum can to one that had a little less total advance. Usually only a reduction of a few degrees is needed.
Jim