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Old 10-18-2013, 05:21 PM   #1
riz
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spark plug help please

What is the proper spark plug to use for my 82 K5 Blazer? I have AC Delco R43TS plugs in there right now. It has an aftermarket built 350 in it if that matters.

Thanks,

RIZ
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Old 10-18-2013, 07:24 PM   #2
79Betty
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Re: spark plug help please

AC DELCO plugs will be fine. I have accel shorty's because of my headers and they're fine. Champion, bosch, all are fine. Unless it's wickedly built i'd stick with AC's.
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Old 10-18-2013, 09:09 PM   #3
silvereagle07
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Re: spark plug help please

The ACDelco r43ts is what I have i n my stock engine and the 355 I'm getting ready to install. They should work fine. Another good option would be a NGK in the same heat range as the ac delcos. I run NGK in my ls2.
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Old 10-19-2013, 10:12 PM   #4
Johnny G
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Re: spark plug help please

I used those same plugs in an 86 305 4BBL GMC
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Old 10-22-2013, 04:12 PM   #5
riz
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Re: spark plug help please

These should be gapped to .045" right? Do they come gapped straight from the box? It's been forever since I changed plugs in anything.

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Old 10-22-2013, 05:27 PM   #6
77ChevySharkBite
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Re: spark plug help please

Quote:
Originally Posted by riz View Post
These should be gapped to .045" right? Do they come gapped straight from the box? It's been forever since I changed plugs in anything.

RIZ
they should already be gapped but never hurts to double check.
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Old 10-22-2013, 05:50 PM   #7
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Re: spark plug help please

If its hei yes, .045.
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