Re: What did you do to your truck today? Chapter II
They are spark plugs that are shorter in overal length to give more room between the header tube and the spark plug for the wires.
I searched Summit and found these right away.
http://www.summitracing.com/parts/acc-0576s-4/overview/
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Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said.
I stand for the flag and kneel at the cross
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