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Old 09-20-2012, 09:05 AM   #1
JAG66
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Join Date: Feb 2011
Location: Goldsboro, NC
Posts: 179
87 C10 5.7 TBI correct spark plug?

I have an all stock original 87 Silverado with 5.7 TBI with 120K miles. Just changed the spark plugs. The old were AC Delco 43's. The ones I installed were AC Delco CR45TS. Had someone question my selection.
Are the 45's the wrong application for my engine?

Last edited by JAG66; 09-20-2012 at 09:10 AM.
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