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I've never measured compression but the engine is new (700 miles). Compression ratio is 9:1. The few times I've measured vacuum, it has always been around 16-17 when the engine is running properly. I'm reasonably sure vacuum would be low if I could get it to run at 14 deg initial. Intake is Edelbrock Performer with Edelbrock 600 cfm w/ electric choke. Engine runs 180-190 F. The problem has always existed. Hopes this sparks some ideas. Thanks.
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