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500 Posts
Are they in anyway different? I thought I saw PM7 stamped on the block somewhere, does this mean it is different? I was looking on the compression calculator page, and while A6 pistons are slightly dished (3.4cc) the "ZC" option (I dont know if they are referring to SOHC or DOHC ZCs) had 7.2 cc of dome. Hmmm...