OE Champion spark plug number for 69 440

[resq302]

I know the OE factory installed spark plugs were made by Champion. What I don't remember is what the Champion part number was. Anyone know off the top of their head?

Thanks in advance.

Brian

 

[RoadRunnerJD]

I know you now have the answer but for everyone's info, Champion J11Y

 

[droptop]

I run J12Y. A little hotter plug seams to last a bit longer.:cents:

 

[Roadcuda]

I run J12Y. A little hotter plug seams to last a bit longer.:cents:

That's what I have in mine also.

 

[Basketcase]

same here

 

[RoadRunnerJD]

I know you now have the answer but for everyone's info, Champion J11Y

That's because you can't find J11Y's. It's probably OK but a plug on the hot side can cause engine damage. On the other hand, you kind of need a hotter spark to burn today's cheap ethanol laced fuel. J14Y was standard on a lower compression 383 2bbl. I would just check the plugs to make sure they are not burning white. You want them to have a nice light evenly burned tan look.

 

[4spd69RR]

I have J12Y copper top in mine.

 

[droptop]

That's because you can't find J11Y's. It's probably OK but a plug on the hot side can cause engine damage. On the other hand, you kind of need a hotter spark to burn today's cheap ethanol laced fuel. J14Y was standard on a lower compression 383 2bbl. I would just check the plugs to make sure they are not burning white. You want them to have a nice light evenly burned tan look.

?????? There is a man in the swap at Carlisle ever year that sells them for $35 a set. I also did a search on Ebag that turned up several sets but at a much higher price of course. But you are correct about needing a hotter plug with today's gas. It won't hardly burn when you light a match to it. LOL:

 

[resq302]

A friend of mine has a bunch of NOS J13-Y's. Is that just a hotter plug than the J-11Y's or would that be too hot?