I have an early car and it has 4V quenched heads. The manual I have I think is from 1973 and states the compression ratio is 8.0:1. It states the cumbustion chamber is 76.9 to 79.9. I think on my car the cumbustion chamber is less than 76.9 and the compression ratio is over 10. I am curious because I am wondering if the cam in the manual is the cam that came in my car or was a diffrent cam installed in my car because of the queched heads?.
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