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Old 01-10-2008, 02:18 AM
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200cc heads are too big, it'll be rather soggy in the lower RPM ranges. 180 would have been far better. the smaller 600cfm carb will make up for some of it, but not much. Since you dont know for sure your rear gear I'd find out, as it will be a big influence on how it performs. I always use GM head gaskets that are .028 in thickness, the 64cc chambers will give you a ratio somewhere in the 9:1 area even with the thin head gaskets depending on how far down in the bore the pistons are. rest of the combo looks good, but I think you have a bit too much head for it.
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