Re: 359 questions

Posted by Owen_Dyneto On 2022/9/5 12:52:29
From what I've read many 359s never left the factory with the advertised compression a ratio of 8.7 until perhaps very late in the run if ever, the factory was constantly struggling to get excessive pinging under control. I understand many dealers responded to customer compaints by installing the extra thick export head gasket to suppress the pinging. True or not I don't know.

After my aluminum head on my 359 cracked I used a 1953 327 cast iron head and the result was very unsatisfactory, pinging was almost constant even with light throttle. Ultimately I had to retard the base timing and rework the distributor to supress the mechanical advance. Still got quite noticeable ping with premium gas of the era, but it ran superbly on gas like ARCO Purple and the like.

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