Quote:
Originally Posted by jwd
I hope you meant 6-8 initial. The only problem I've ever seen from having too much advance at cruise speed is a surging situation. Initial timing, mechanical curve/total timing and the characteristics of the vacuum can (" of vacuum that it starts and at full and the total amount of advance) all have to work together. After you've tuned a few hundred, you get the hang of it. 
Jim |
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.