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#21
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So...it is the original 70 YS 400 bored 30 over with original 13 heads (a little blending), original intake, RARE manifolds and DUI electronic ignition.
If I understand correctly, with the HEI, the recommendation is AC 43 SX - AC 45 SX gapped at .045"?
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1970 GTO (Granada Gold) - 400 / TH400 |
#22
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The AC R 43S would work just fine in that application. You can easily gap those to .045" if you wish, don't really need the "X" plug.
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