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Old 08-11-2010, 06:32 PM   #1
fred1968
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Location: Chatham,Ontario
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heat range

I have a 1968 c-20 with a 292 6 cyl, 4 speed. I would like advice on hot or cold plugs for my truck.
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Old 08-11-2010, 06:46 PM   #2
68gmsee
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Re: heat range

Personally, I'd go with what the engineers recommended from the factory for everyday use.
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Old 08-11-2010, 06:55 PM   #3
El Jay
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Re: heat range

X2
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'72 GMC 3/4 T Fleet: Another Daily Beater
'72 Plymouth Gran Coupe: ?


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Old 08-11-2010, 08:44 PM   #4
JimKshortstep4x4
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Re: heat range

Here is a link to information on the AC spark plugs that might be helpful.

Jim

http://www.acdelco.com/parts/spark-p...tification.jsp
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1965 Impala SS 400 sbc, Muncie rock crusher
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1969 El Camino, 350 sbc, TH 350
1971 Snowplow built on a Blazer frame
1972 GMC Short bed, stepside, TH 400, 427 BBC
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