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