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Old 06-22-2013, 09:52 PM
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Help needed on timing

I am hoping if someone can guide me on this ignition setup I am running. It is HEI on a SBC. Cam is 230 @ .050" and .490" lift on 9.9:1 CR on Vortec heads. Aside from the carb being way too lean, the truck is running great. The ignition is as follows:

initial timing: 26
total timing: 35 (all in by 2,500 RPM)
no vacuum advance

Also I have "medium" springs in the HEI now, but they hold off advance from happening until 2,000 RPM's.

It is a manual trans and 3.73 posi. I think the truck is 3,800-4,000 lbs.

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Old 07-09-2013, 11:59 PM
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can't do anything with the timing until you fix that lean condition.
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Old 07-10-2013, 12:04 AM
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are you getting any popping in the carb? Is the lean all the time or just under accelleration?
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