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Old 03-31-2009, 00:27   #1 (permalink)
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Idling issues!!

Ok guys Im new to this forum but I need some help. I have a 1970 mach 1 with a 72 351 cleveland CJ engine. It has a weind excelerator intake, mallory unlite distributor(mechanical), MSD coil, comp cam with 260 intake/268 exhaust at .050 duration and a .683 gross lift. it has been dynoed at 528 hp. the problem im getting is after installing it in my mach 1 is I cant seem to get the ideal to stay were i set it. I set it at 750 rpms, and part of the time it stops at 1000 to 1200 rpms after I rev it up or go down the road. I have switch carbs from an edelbrock 800(1413) to and edelbrock 600(1405) and finally back to and old holley 600. It doesnt seem as bad with the holley but it still is doing it. So what do I do to eliminate my problem.. please help out... thanks...

sorry its so long.......

Last edited by Bigct59; 03-31-2009 at 00:28. Reason: typo
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Old 04-03-2009, 16:39   #2 (permalink)
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Re: Idling issues!!

Why do you have it set so low? With that cam and setup, 1100rpm is where i would set it.
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Old 04-10-2009, 05:50   #3 (permalink)
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Re: Idling issues!!

If the idle mixture is a bit lean / throttle adjustment too open ,it can hang at higher RPM.Mechanical advance weights shouldn't be sticking?
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Old 04-10-2009, 05:56   #4 (permalink)
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Re: Idling issues!!

Sorry ,xdclevo is right about idle speed with that combo. I should think before speaking and read before thinking.
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