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Spark plug recommendation

Forum: C3 Engines, Driveline and Handling

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Spark plug recommendation

Posted: 10/20/19 9:23amMessage 1 of 4
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Weatogue, CT - USA
Joined: 6/29/2015
Posts: 102
Vette(s): 1979 C3 L82 383 cu in

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

"Made to be run hard"
Simsbury, Ct.

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Re: Spark plug recommendation

Posted: 10/20/19 11:46amMessage 2 of 4
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Overland Park, KS - USA
Joined: 7/9/2003
Posts: 916
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. 2023 Accelerate Yellow HTC Stingray

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

1973 L-82 4 spd

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Re: Spark plug recommendation

Posted: 10/28/19 6:11pmMessage 3 of 4
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Rock Springs, WY - USA
Joined: 12/14/2018
Posts: 25
Vette(s): 1979 Corvette, Black w/Doeskin Interior. L48, 4-speed. Cooper Cobra tires on rally wheels. T-tops.

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

Posted: 10/29/19 10:13amMessage 4 of 4
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Weatogue, CT - USA
Joined: 6/29/2015
Posts: 102
Vette(s): 1979 C3 L82 383 cu in

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

"Made to be run hard"
Simsbury, Ct.

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