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04-22-2006, 07:26 AM
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Spark Plug?
I Have A Zz430 Crate Engine (350 Sbc, 430hp, 430 Torque). It Calls For An Ac Mr43lts Spark Plug. I Was Told To Go With A Hotter Plug. Does Anyone Have Any Suggestions? Thanks
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04-24-2006, 08:54 AM
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Spark Plug
Joe, According AC, what you have is this... MR stands for marine resistor plug. 43 is the heat range,so going up in a series(43,44,45,etc.) increases the heat range. The LT suffix stands for long reach,.715"(18.16 mm) tapered seat,and the S is for extended tip. Hope that helps. Batstar70
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