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What NGK spark plugs for a 10.5:1 451? #80286 06/26/08 10:09 PM 06/26/08 10:09 PM
Joined: Jan 2003 Posts: 1,261 Phoenix, AZ B Belvedere1 OP pro stock
Belvedere1 OP pro stock B Joined: Jan 2003 Posts: 1,261 Phoenix, AZ	Looking to try something different from the Champion RJ12YC's. Using OOTB Eddy heads, 10.5:1, solid cam 254/.520, 1 7/8 Hookers, 800 Eddy carb, MP electronic ignition. Appreciate any suggestions.

Re: What NGK spark plugs for a 10.5:1 451? [Re: Belvedere1] #80287 06/27/08 12:26 AM 06/27/08 12:26 AM
Joined: Jan 2003 Posts: 1,771 Jamestown, Indiana J James74 top fuel
James74 top fuel J Joined: Jan 2003 Posts: 1,771 Jamestown, Indiana	i have a similar combo, was looking for other options, too...

Re: What NGK spark plugs for a 10.5:1 451? [Re: Belvedere1] #80288 06/27/08 01:23 AM 06/27/08 01:23 AM
Joined: Jan 2003 Posts: 30,989 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,989 Oregon	Why would you use a RJ12YC plug in an Edelbrock head? Those plugs don't even fit that head.

Re: What NGK spark plugs for a 10.5:1 451? [Re: AndyF] #80289 06/27/08 09:16 AM 06/27/08 09:16 AM
Joined: Jan 2003 Posts: 1,771 Jamestown, Indiana J James74 top fuel
James74 top fuel J Joined: Jan 2003 Posts: 1,771 Jamestown, Indiana	i think he meant rc12yc...

Re: What NGK spark plugs for a 10.5:1 451? [Re: Belvedere1] #80290 06/27/08 09:20 AM 06/27/08 09:20 AM
Joined: Apr 2003 Posts: 3,968 North Riverside IL & Lowell IN GTXKen super gas
GTXKen super gas Joined: Apr 2003 Posts: 3,968 North Riverside IL & Lowell IN	Why are you looking for a different plug? What do the plugs look like now?

Re: What NGK spark plugs for a 10.5:1 451? [Re: James74] #80291 06/27/08 09:56 AM 06/27/08 09:56 AM
Joined: Jan 2003 Posts: 1,261 Phoenix, AZ B Belvedere1 OP pro stock
Belvedere1 OP pro stock B Joined: Jan 2003 Posts: 1,261 Phoenix, AZ	RC12YC is correct, these have been in there since I broke the cam in and have ran it a few miles, these were recommended from the literature with the Eddy heads and just looking for something else that might match the overall combo a little better. They appear to be firing OK though.

Re: What NGK spark plugs for a 10.5:1 451? [Re: Belvedere1] #80292 06/27/08 10:22 AM 06/27/08 10:22 AM
Joined: Apr 2003 Posts: 3,968 North Riverside IL & Lowell IN GTXKen super gas
GTXKen super gas Joined: Apr 2003 Posts: 3,968 North Riverside IL & Lowell IN	If they look ok I wouldn't change them and if they not I would change to another champion, it will be a lot easier to change to a hotter or colder plug within a brand that it will be changing brands. Call Champion, Federul Mongol, they have a great tech guy that will tell you more about plugs than you could imagine. Ken

Re: What NGK spark plugs for a 10.5:1 451? [Re: Belvedere1] #80293 06/27/08 11:13 AM 06/27/08 11:13 AM
Joined: Jan 2003 Posts: 70,126 Here DirectSubjection Tacohead. The First and Only
DirectSubjection Tacohead. The First and Only Joined: Jan 2003 Posts: 70,126 Here	I tried to peek at the number on the NGK's in my 383's Edelbrock heads but couldn't see it, put them in years ago so I don't remember. Ride eternal, shiny and chrome

Re: What NGK spark plugs for a 10.5:1 451? [Re: Belvedere1] #80294 06/27/08 11:52 AM 06/27/08 11:52 AM
Joined: Oct 2003 Posts: 2,537 PORT ALBERNI , BC., CANADA superwrench master
superwrench master Joined: Oct 2003 Posts: 2,537 PORT ALBERNI , BC., CANADA	For street use......FR5's will do with the Eddy heads. They are just a tad cooler than RC12yc's and because they're an NGK they WILL work good!

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