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04-08-2016, 03:16 PM
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#1 |
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70+ ( Old Skool Club )
 
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,130
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Help with Spark Plug Choice
I am going to change the plugs in my bone stock all original 72 c10 with a 350 4bbl. and 87,000 miles. If I keep the truck 10 more years I may, at the most, put 10/15,000 miles on it over that time. Other than installing the Pertronix Distributor, ignition wires and one of their 40,00 volt coils I have waiting to be installed and maybe putting a dual snorkel air cleaner on the truck in the future the engine shall remain stock. My research has told me there are 4 different types of plugs, copper, platinum, double platinum and iridium. The prices vary from 1.89 for copper plug to 8.25 for the iridium. Can you guys/gals give me some real world info on what you are using for plugs. If my old memory is functioning correctly I believe that unlike todays vehicles the plugs in these engines form the 70's needed plug changes every 10,000 miles
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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04-08-2016, 04:00 PM
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#2 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Help with Spark Plug Choice
Stock truck and having no issues I would stick with what's already in it.
R45TS plugs 
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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04-08-2016, 04:08 PM
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#3 | |
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70+ ( Old Skool Club )
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,130
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Re: Help with Spark Plug Choice
Quote:
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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04-08-2016, 04:26 PM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Help with Spark Plug Choice
i'd check them to see what the condition is first
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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04-08-2016, 04:44 PM
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#5 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
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Re: Help with Spark Plug Choice
I would pull them out and look at the burn on them. If they look good go with the same thing.
Back when I had the stock 307 I changed them every 15,000 but I would pull them and wire brush them good also if I thought I had a bad one. 
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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04-08-2016, 04:45 PM
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#6 |
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The Niner
 
Join Date: Nov 2010
Location: Broad Brook, CT
Posts: 2,496
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Re: Help with Spark Plug Choice
I go against the grain and have always run Autolite 24 Copper Core plugs.
__________________
"A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/ |
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04-08-2016, 06:21 PM
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#7 | |
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70+ ( Old Skool Club )
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,130
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Re: Help with Spark Plug Choice
Quote:
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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04-08-2016, 09:43 PM
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#8 |
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Registered User
Join Date: Jun 2015
Location: @
Posts: 890
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Re: Help with Spark Plug Choice
I would go with the ac plugs and don't forget to open the gap for the electronic ign to .045 should get you 15 easy if everything else is good . back then tolerences and points weren't as good as they are now 100,000 was a worthless engine now its nothing that's why plugs had to be changed so often . I do still have a spark plug cleaner I use for points
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