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08-06-2024, 11:25 PM | #9 |
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Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,576
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Re: What spark plugs for 1963 230 engine
My old Fix Your Chevrolet book from 63 shows the 230 taking an AC 46N with a .035 gap. Should be a flat seat plug with a washer. I think taper seat plugs started with HEI.
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