AC Delco equivalent spark plug

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May 11, 2006 | 12:23 PM

desi

Thread Starter

Melting Slicks

Joined: Sep 2002

Posts: 2,783

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From: Engineers do it better.

AC Delco equivalent spark plug

Looking for AC Delco part number for Champion RC-12YC spark plug. Edelbrock recommends running Champion plug.

I don't like to run Champion in my lawn mower, let alone the Vette

May 11, 2006 | 02:22 PM

Crash80

Drifting

Joined: Apr 2003

Posts: 1,323

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From: Castle Hills Texas

I have no idea but I have had great luck with AC Delco Rapid Fire #2 plugs in my 80. If nothing else this bumped ya back up to the top.

May 11, 2006 | 02:42 PM

gonzo14

Racer

Joined: Feb 2006

Posts: 428

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From: West Des Moines Iowa

forget about Champion, run the AC Delco R45 plug, it runs like a "champion"

Gonzo

May 11, 2006 | 03:07 PM

rastadr

Pro

Joined: May 2005

Posts: 745

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From: Miami Florida

ive had most success with ac delco r45ts the dart folks suggest autolite ar133 for their heads with small blocks and i may give it a shot out of curiosity.

May 14, 2006 | 01:08 PM

cardo0

Le Mans Master

Joined: Oct 2002

Posts: 7,098

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From: Las Vegas - Just stop perpetuating myths please.

Champion RC-12YC is a cold plug.

Quote:

Originally Posted by desi

Looking for AC Delco part number for Champion RC-12YC spark plug. Edelbrock recommends running Champion plug.
I don't like to run Champion in my lawn mower, let alone the Vette

Try AC Delco R_43T(S - for extended tip, makes it act like a little hotter plug) or R_44T(S). That Champion RC-12YC doesn't like to run when cold - only once eng is good and hot. U could try Champion RC-14YC as the next step hotter.

cardo0

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