Re: 359 questions

Posted by Packard Don On 2022/9/5 13:15:39

My 1954 Patrician still has the original aluminum head and it is never pinged. Maybe the multi-tip plugs in it have helped but I don’t recall it pinging before they were installed either.

As for cast iron heads, I have a couple that say something like 288 std 327 auto (or maybe the other way around) so not sure how that would affect the compression ratio.