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Unread 09-15-2013, 05:16 PM   #1
ridler3d
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How do my plugs look?

Do these look lean to you? 258 l6.
1bbl carb
HEI ignition
Autolite 66 plugs.

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Unread 09-15-2013, 05:20 PM   #2
wtfcrunch
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It might be the angle but the gapping looks pretty short than recommend but other than that they don't seem real real bad. Maybe a little lean wear showing on a few
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Unread 09-15-2013, 05:24 PM   #3
ridler3d
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yea just the angle...gaps are .32"
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Unread 09-15-2013, 07:59 PM   #4
cruiser54
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Unread 09-15-2013, 08:16 PM   #5
Mean Max
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Quote:
Originally Posted by wtfcrunch View Post
It might be the angle but the gapping looks pretty short than recommend but other than that they don't seem real real bad. Maybe a little lean wear showing on a few
I agree. I do a lot of HEI/Weber conversions on 258s at my Jeep-only shop, and I typically use Autolite 985 plugs gapped at 0.050" for HEI applications.

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Unread 09-16-2013, 07:41 AM   #6
vadslram
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1 and 3 (from the top) look a little crusty but not bad.
Which way did they come out? top forward or top rear?

Agree on the tight gap too. If you got HEI it doesn't make sense not to take advantage of the extra juice.
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Unread 09-17-2013, 03:20 PM   #7
ridler3d
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top forward.
Ive always used autolite 66 because that's what was in it when I first got the car. Should I be using 985's?
I'll give the .050" a shot and maybe compare with .045", see what runs best. What is the advantage of the larger gap? Bigger spark=more complete burn, correct?
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Unread 09-17-2013, 08:38 PM   #8
ridler3d
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just gapped my plugs with a dime (.45") runs much better. thx.
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Unread 09-18-2013, 07:47 AM   #9
vadslram
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Quote:
Originally Posted by ridler3d View Post
just gapped my plugs with a dime (.45") runs much better. thx.

HAHA serious shade tree.
I haven't done the dime since I used a matchbook to set the points.
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