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Old 06-11-2002, 08:06 AM
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Post Timing Chevy 350

I have a Chevy 350 that has a non oem cam. I am found that oem timing is 8 degrees before top dead center. my question is do you have to make an adjustments for a non standard cam shaft?? I do not know the specs on the cam but I do not think it is that radical. Davesr@trianglesalesusa.com
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Old 06-11-2002, 02:06 PM
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it depends on the cam but when in doubt just put it in straight up. line up the dot on the cam gear with the dot on the crank gear. that gives you no advance and no retardation
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Old 06-11-2002, 07:10 PM
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i agree w/bull.get it fired up the old fashioned way, then adjust the total timing while its running.
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Old 06-12-2002, 06:57 PM
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I think you are talking ignition timing not cam timing correct? If so you want a total of 34 degrees advance at 2800 RPM with the vacume advance disconected.You can get this with the springs that come with the Crane adjustable vacume advance. The distributor has 20 degrees in it and you need to ste the timeing up to make up for the rest. So I would set the timeing at 12 degrees. Leave the vacume advance off and try several full throtel rund thrue the gears if you have no ping or knock then run the advance. If you have knock at this point you should install a Crane adjustable vacume advance. I set min to run 16 degrees advance for a total of 52 degrees at cruse. With the adjusting screw out 6 turnes. My 10 to 1 compresion emgine does not knock or ping with the middle grade of Ammaco fuel. Look at the Crane seight on the web and if you need more help contact me.
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