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Timing for economy

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Old Mar 21, 2008 | 11:50 AM
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Default Timing for economy

How much advance do you guys like to run on the HWY for best economy?
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Old Mar 21, 2008 | 01:10 PM
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Ive always heard at very light loads up to around 50 degrees. The stock timing is in the 30-40 degree range in the highway crusing cells.

I havent noticed any diffrence in advancing timing in the cruise areas. I would think the around the stock timing would be best untill you get into the higher arimass and pe mode. But a bigger cam might require some more timing in the cruise areas but then a higher compression ratio might require a little less.

Im sticking with a little added on to the stock table for cruise. GM spent more time than anyone else tuning.
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Old Mar 21, 2008 | 09:49 PM
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I have about 30 degrees at 70MPH right now.
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Old Mar 22, 2008 | 03:30 AM
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I'm currently running 45*. I haven't tried any more yet.
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