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Old 07-18-2016, 10:37 PM   #1
scott657
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New engine for project andSpark plug selection

Gang, I just picked up a rebuilt engine for my truck. It had been sitting.
The block # is 3970014(350) and the head #is 3998993( not great heads, could be 1.72 intake or 1.94 intake) the spark plug bores are 14mm "peanut plug. I have a performer manifold and I just rebuilt a 600 performer for it.
I will probably run a points distributor with a pertronix ignitor and coil. Whats a good spark plug to use as a starting point R44 etc. Brand does not matter,I usually use AC Champion or autolite Just need an approximate Plug ##
As always thank you
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63 C10 Stepside
230 1bbl
Saginaw 3 spd
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Old 07-18-2016, 11:50 PM   #2
scott657
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Re: New engine for project andSpark plug selection

I think the plug will be a champion 3025, It is a 5/8 tapered plug, pre HEI and seems very universal to the SBC
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63 C10 Stepside
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Saginaw 3 spd
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Old 07-19-2016, 10:19 AM   #3
scott657
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Re: New engine for project andSpark plug selection

How about a champion RV12YC
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Saginaw 3 spd
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