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Timming curves for a B20F 140-160

Does anyone hav ethe stock timing curves for a 73 b20f. By timming curves I meen a chart or similar document that gives the ignition timming with all vac hoses hooked up at different rpm points. A good diagnostic tool to have for your dizzy, I suspect that mine is sick, so I would just like to check. If such a list doesn't exist, and you would like to make one,knowing that you engine is in a great state of tune, the next time you are under the hood and have a few miniutes to spare hook up your timming light and take readings at every 250 or 500 rpm. This can serve you well in the future.

Thanks for any info
--
65 122s/73 1800es/80 262c(350ci v8)/89 745t/87 780/89 740/89 740t/ 86 745






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