Re: 305a V6 ignition parts
I have a 351E that came with the Autolite 65 plug basically a step down in the heat range from the 66 plug. It does have the corect 3/4 inch reach. I used it as a cross reference to come up with a plug compatible for my 478 and HEI to run .060 gap and came up with AC plug that was used in later model GM 4 cylinders.
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