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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: Unofficial on August 18, 2009, 10:55:02 pm

Title: Which spark plugs?
Post by: Unofficial on August 18, 2009, 10:55:02 pm

So I'm taking my truck into a shop tomorrow to get some problems diagnosed, because I can't figure anything out for the life of me. Before I do, I wanted to make sure I'm running the right plugs. They seem a little short to me, and I feel like having too short of a plug will cause problems, so what are you guys using for plugs? What should the thread reach be?

Title: Re: Which spark plugs?
Post by: Irish_Alley on August 18, 2009, 11:45:22 pm

part numbers would be good for this for comparison

Title: Re: Which spark plugs?
Post by: Unofficial on August 18, 2009, 11:57:41 pm

Quote from: Irish_Alley on August 18, 2009, 11:45:22 pm

part numbers would be good for this for comparison

They're AC-Delco Rapidfire plugs. I don't have the part number. I got them from autozone, these are it, but they don't have a picture. I just feel like they're too short.

EDIT: The part number just says "1." It says that on the plugs.

http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?skuDescription=Ac-Delco-Rapidfire+/+Spark+Plug&categoryDisplayName=Routine+Maintenance&fromString=search&itemIdentifier=22175_0_0_&productId=22175&sortType=&parentId=42-0&filterByKeyWord=spark+plug&isSearchByPartNumber=false&navValue=14200033&categoryNValue=14299999&fromWhere=&itemId=33-0&displayName=Spark+Plug&store=1767&searchText=spark+plug&brandName=Ac-Delco-Rapidfire (http://www.autozone.com/autozone/catalog/parts/partsProduct.jsp?skuDescription=Ac-Delco-Rapidfire+/+Spark+Plug&categoryDisplayName=Routine+Maintenance&fromString=search&itemIdentifier=22175_0_0_&productId=22175&sortType=&parentId=42-0&filterByKeyWord=spark+plug&isSearchByPartNumber=false&navValue=14200033&categoryNValue=14299999&fromWhere=&itemId=33-0&displayName=Spark+Plug&store=1767&searchText=spark+plug&brandName=Ac-Delco-Rapidfire)

Title: Re: Which spark plugs?
Post by: Irish_Alley on August 19, 2009, 12:01:34 am

the treads should be about 1/2" that plug should be p# 10
(http://contentinfo.autozone.com/znetcs/product-info/en/US/acc/0276S/image/5/)

Title: Re: Which spark plugs?
Post by: Unofficial on August 19, 2009, 12:05:40 am

Hmm, maybe they aren't too short. I guess I'll just take it in and see what happens.

Title: Re: Which spark plugs?
Post by: DnStClr on August 19, 2009, 12:57:19 am

For your 87, The plugs should be (AC Delco p/n) CR43TS. Gap at .035 inches  The threads are 14 mm and they (the plugs) have an extended tip.