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Old 05-18-2009, 03:31 PM
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spark plugs

This is not a hot rod question but i feel that i can get some input on what plugs to use on my run around truck. I have a 99 chevy 1/2 ton with the small V8 The plugs that i have in now are AC platinum. They want $ 7.00
each for the plugs. They have bosh platinum and autolite for $2.99
Is the AC plugs worth it or are the other brands just as good. I am sure they are all made in China or Mexico. You think us tax payers should get a break on AC since we are the ones bailing out GM

Mark

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Old 05-18-2009, 04:08 PM
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I`ve used bosch platnums countless times and never once had a issue.
Standard AC Delco`s work nicely also.
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Old 05-18-2009, 05:11 PM
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Spark plugs

I have had fantastic luck with the AC rapidfires,based on previous experience I put a set in my old daily driver '91 T-Bird 3.8 with a 133K on her and passed emissions with flying colors.Check this out:HC app.std is 1.00 my reading was 0.14,CO reading app std.12.00 my reading 4.28 NOX app std 2.50 my reading 1.47.Now thats what I call efficent spark! I ran them in a high mileage Ford Ranger and obtained similar results.I had a built 350 Chev with the L-79 cam after intalling the rapidfires it ran so smooth you would think the cam was a stocker also picked up around 2 MPG with these on all of them.
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Old 05-18-2009, 05:18 PM
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Quote:
Originally Posted by 49dream
This is not a hot rod question but i feel that i can get some input on what plugs to use on my run around truck. I have a 99 chevy 1/2 ton with the small V8 The plugs that i have in now are AC platinum. They want $ 7.00
each for the plugs. They have bosh platinum and autolite for $2.99
Is the AC plugs worth it or are the other brands just as good. I am sure they are all made in China or Mexico. You think us tax payers should get a break on AC since we are the ones bailing out GM

Mark
Exotic plugs are highly over-rated unless your squeezing every horsepower the engine can make up on the red line. Especially for a situation like yours, a set of plain old ordinary plugs without rocket science electrodes will do ya' just fine.

If you're using headers look at Nippon Denso, they are shorter thus easier to fit around headers and come in a wider selection of heat ranges than some other better known header clearance plugs.

Bogie
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Old 05-18-2009, 10:41 PM
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I had AC platinums in a Northstar Cadillac, and when they bit the dust I replaced them with the cheapest Champions available. It ran great, as if it didn't even know the difference.

I think the OEM's used platinums only because the feds require a car to pass the smog test for something like 100,000 miles without having any maintenance at all.
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