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tubman · 05-31-2019, 06:36 PM

I am in mid-central Minnesota at a bit above 1000' elevation. I have an AEM gauge on my test stand. From experience, while a flathead will run at the desired 14-15:1 at speed, they tend to idle best at about 10:1. I consider it to be normal, and have convinced myself to live with it.

05-31-2019, 06:36 PM	#29
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,320	Re: Air/Fuel Meter/gauge I am in mid-central Minnesota at a bit above 1000' elevation. I have an AEM gauge on my test stand. From experience, while a flathead will run at the desired 14-15:1 at speed, they tend to idle best at about 10:1. I consider it to be normal, and have convinced myself to live with it.