Re: Mike P 1955 400 Slow Resto Thread!
Posted by Packardfan On 2022/7/19 22:37:25
Quote:
R H wrote:
Spark plug s
Autolite. 66.
So I can use 3/4 reach on a 55 400?
From all my reading I thought the 55's are 7/16 reach and 56's are 3/4 reach? I think I read so much about spark plugs I went full circle back around to not knowing crap!
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