When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Most people don't realize that even with CNC'd chambers there can be a fluctuation in cc's. Here are two chambers on the set of heads I bought that had been CNC'd. If you layed out 1 cc of material you might be surprised how much it actually is.