67 C/S 330 4 barrel Spark Plus needed
January 29th, 2020, 03:04 PM
#1
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Join Date: Apr 2014
Posts: 262
67 C/S 330 4 barrel Spark Plus needed
Hello, Doing research on what spark plugs are used in the 330 (High Comp) 4 barrel. I currently have the AC44S in the block. Nobody seems to sell these anymore. Auto part stores say to use the 43S. I have the 67 Service manual and I thought the heat ranges vs. Engine size chart was there, but can't find it. What type of plug do you guys use?
thanks Brian
thanks Brian
January 29th, 2020, 08:51 PM
#3
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Join Date: Mar 2007
Location: Northern VA
Posts: 47,601
February 1st, 2020, 03:30 AM
#4
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Join Date: Aug 2019
Posts: 1,056
Here is the factory recommended spark plug for every Olds engine 1960 - 1969
http://www.carnut.com/specs/gen/olds60.html
43s did not come into play till 69
http://www.carnut.com/specs/gen/olds60.html
43s did not come into play till 69
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