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cams for 2.7L race motor

Engine

Vehicle Information: Year: 1974; Body Type: Coupe;

HarryIt is time to rebuild my 2.7. I currently am running Web 120/104 cams with 10.5 :1 compression ratio with Weber carbs. Can I gain hp by switching to GE80 cams or the Web equivalent? This is a dedicated vintage race car. What is the practical upper limit for the compression ratio using a single plug with Cam2 110 octane?ThanksDanDan

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