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Early_S_Man Early_S_Man is offline
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Join Date: Dec 1999
Location: TX USA
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Guys,

Back in the days of Holley carbs to get max power out of a V-8 ... 12 - 12.5:1 used to be the target A/F ratio to get max power under acceleration! Of course, that was in the days of long-duration, high-overlap cams and 12.5:1 compression ratios, and part of the rich mixture was lost to exhaust scavenging and dilution by burnt combustion products. Avoiding detonation on 100-octane pump gas was also a consideration!

So, that 13:1 may not be far off, from a max power standpoint ... with 11.3:1 compression ratio, detonation is still an issue! Sounds like the DME is running in default rich mode.
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Last edited by Early_S_Man; 01-03-2004 at 01:33 PM..
Old 01-03-2004, 01:18 PM
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