cam choice
Try a cam with a centerline of 110 or 108. The 112 or higher will have a smooth idle when it's all warmed up.
Like this one;
http://store.summitracing.com/partdetail.asp?part=CCA-CL20-221-3&autoview=sku
or
http://store.summitracing.com/partdetail.asp?part=CCA-CL20-222-3&autoview=sku
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