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2.0 to 2.2 conversion

Engine

Vehicle Information: Model: 911 coupe; Year: 1968; Body Type: Coupe; Engine (type, size, modifications): stock 2.0; Total Mileage: 130k;

rebuilding 1968 911 (not an L) engine would like to convert to 2.2 S P/C (including S Cams) you replied to me earlier this mod is not good because CR will drop into 7s, Bruce Andersons book mentions this mod does have benefits and also mentions CR will be slightly above 9? I want to increase performance wisely. I contacted a vendor regarding the 2.2 conversion he says CR will be above 9. Please help. Jim

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