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03-24-2015, 10:17 PM
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spark plugs
I know this is an old discussion, I've look at the old thread but I was hoping to find something new regarding using E3 plugs. I have a W351 stroked putting out 470HP. I am using Autolite plugs now, but was thinking when I changed them, going to E3's. Do I need to gap them, or use them straight out of the box? I understand they burn cleaner than Autolite. Any help appreciated 
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03-25-2015, 01:45 PM
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one thing I need to add. Do I need to get the car retuned with the new type plugs?
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03-25-2015, 01:54 PM
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Just my opinion; snake oil....stick with the copper core Autolites and save yourself some money.
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03-25-2015, 05:24 PM
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Quote:
Originally Posted by bingo2
Just my opinion; snake oil....stick with the copper core Autolites and save yourself some money.
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+1 on the above and ALWAYS check the gap on any spark plug before you install it........
David
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DAVID GAGNARD
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03-25-2015, 09:10 PM
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I have a 351w. I have to get my car emission tested every other year which is always a challenge, so several years ago I thought I would give the E3's a try. I checked the gap and they were close to where I would have set them. The car passed the test that year and it ran good so I was happy. I did notice though that the hot starts had become a little more difficult, but i didn't attribute that to the plugs.
At some point in the next year, I stumbled upon a You Tube video of a distributor test machine where the guy had a bunch of different spark plugs hooked up to it. It was very noticeable to me that the Bosch Platinum + 4 plugs had a larger and more consistent spark than the rest of the plugs he had hooked up.
So for the next emission test I decided to try a set of the Bosch plugs. I immediately noticed that the car idled better and the off idle acceleration had improved. The car passed the test that year and as an added bonus, the hot start issue also disappeared. I am a happy camper. So the bottom line for me is if one is looking for a clean burning spark plug, I would get the Bosch Platinum + 4's over the E3's. Just my experience with my particular engine.
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