silver100

i was just wondering what plugs you guy's perfer , i have heard ac delco is not what they used to be . i have always ran ac delco and liked them but i have noticed that the newer plugs seem to be made differnt and i have read post were some people had recommend using ngk in a chevy . what do you guy's think . thanks silver100

broughy84

I always stay with ac delco in a gm. IMHO anything else can produce problems in a gm engine. Especially Bocsh; however, I have never tryed NGK in either of my c1500's. I figure that if GM spends thousands upon thousands of dollars in research for these engines then there is a reason the AC's are the factory prefered plug, so I just stick with them. There again, that's just my

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Matthew Brough
1998 Chevrolet Venture -- 104,000 miles
1988 Chevrolet Silverado -- 156,000 miles
1996 Chevrolet Cheyenne -- 107,000 miles

MT-2500

Use what the good book calls for.
Most use AC-delco but one or 2 GM aplications use NGK from factory.
MT

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Remember proper testing gives us the answer to many problems.
MT