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Ol' Ron · 07-13-2012, 10:10 PM

Without the vacuum advance it no beter than the Mallory or MSD. The Vacuum advance takes into consideration the load on the engine and allows the machanical advance to give power and the vacuum advance to provide economical cruise for better mileage. Remember depending on the engine and the modifications to it will determine the Total advance curve, ssoooo ya gota putz with it. I'd recomend 20 degs at 2000 and 6 degs vacuum for starters.

07-13-2012, 10:10 PM	#7
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: 8BA Distributor centrifugal advance Without the vacuum advance it no beter than the Mallory or MSD. The Vacuum advance takes into consideration the load on the engine and allows the machanical advance to give power and the vacuum advance to provide economical cruise for better mileage. Remember depending on the engine and the modifications to it will determine the Total advance curve, ssoooo ya gota putz with it. I'd recomend 20 degs at 2000 and 6 degs vacuum for starters.