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Topic: Spark plug recommendation

in Forum: C3 Engines


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Spark plug recommendation (1/4)
 10/20/19 12:23pm
Dblancha79Gold Member
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Weatogue, CT - USA

Vette(s):
1979 C3 L82 383 cu in


Joined: 6/29/2015
Posts: 80

I just installed some Edelbrock E street aluminum heads and they recommend Champion RC-12YC spark plugs. These are quite long and not a lot of header clearance. Is there a spark plug with a shorter porcelain part that any of you would recommend that will fit these heads? Thanks



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"Made to be run hard"
Simsbury, Ct.

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Re: Spark plug recommendation (2/4)
 10/20/19 2:46pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 864

Check out the AC Delco equivalent plug and see if it's any shorter.



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1973 L-82 4 spd

Re: Spark plug recommendation (3/4)
 10/28/19 9:11pm
Sasza79Gold Member
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Rock Springs, WY - USA

Vette(s):
1979 Corvette, Black w/Doeskin Interior. L48, 4-speed. Cooper Cobra tires on rally wheels. T-tops.


Joined: 12/14/2018
Posts: 21

You might look at a set of ACCEL spark plugs.  They make a shorter porcelain plug that is made for headers.  I installed a set on my '79 L48 and they run fine.  



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Re: Spark plug recommendation (4/4)
 10/29/19 1:13pm
Dblancha79Gold Member
Gold Member
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Weatogue, CT - USA

Vette(s):
1979 C3 L82 383 cu in


Joined: 6/29/2015
Posts: 80

Thanks , I did end up buying shorty plugs from Accel.



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"Made to be run hard"
Simsbury, Ct.

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