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I have 250 miles on my 427. I started getting a little detonation with the red bushing in the Pro Billet MSD so I cut the initial timing to 10 and it still was doing it when I wasn't running fuel additives. (Xylene @ 10%) So I put the silver bushing back in. It seems pretty happy now but still has a tendency to diesel when shutting down.
I may need to rein it in a bit more. I'm back at the light silver spring and blue spring combo with the silver bushing. That gets me 34 degrees by 2800 rpm.
I'm going to try running it at 32 and see if the diesling stops. I will reset the initial timing to 8 and leave the silver bushing in place.
Let's not get sucked into comparing alloy engines and or alloy heads with period (1966)  427 timing settings.
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
Last edited by SCOBRAC; 05-13-2004 at 04:30 PM..
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