Edelbrock aluminum head spark plugs.

[37 Coupe]

Friend changed to a brand new set of Edelbrock heads for his 1940 Ford original engine. Engine has fuel and he claims it has a blue spark but cannot get it to fire. Brand new plugs that are Autolite supposedly equivalent to Champiuon H-10,recommended by Flathead Jack and Speedway where he bought the heads. I use the NGK plugs myself but is there another plug he should try? Could every spark plug hole on these heads keep spark from fuel if they do not run deep enough? Thank You .

[GreenMonster48]

Usually Edelbrock will recommend a plug on the instructions. Always go by what the manufacturer recommends, not the vendor.

[GreenMonster48]

I just looked, I know it's a different motor, but I used RC12YC by Champion

[flatjack9]

You need a 3/4" reach spark plug. I use the NGK equivalent of the Champion RC12YC. That's what Edelbrock recommended. I wouldn't trust anything Flathead Jack recommended. Speedway techs are a little iffy also.

[scooder]

[QUOTE I wouldn't trust anything Flathead Jack recommended. Speedway techs are a little iffy also.[/QUOTE]
Ain't that the truth!

[camswax]

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Same thing happened to my buddy everyone checked spark same as you nice blue spark everything was right. As I have never had much luck with NGK I installed anew set of champion H-10c and it fired up straight away. This is only what ihave experienced I have people tell me to ditch the champions for NGK I guess it's what works for you.

[JSeery]

It is hard to believe that a band of sparkplug would keep an engine from firing. Maybe run poorly, but not fire up at all?

[Steve/IL]

Originally Posted by 37 Coupe

Friend changed to a brand new set of Edelbrock heads for his 1940 Ford original engine. Engine has fuel and he claims it has a blue spark but cannot get it to fire. Brand new plugs that are Autolite supposedly equivalent to Champiuon H-10,recommended by Flathead Jack and Speedway where he bought the heads. I use the NGK plugs myself but is there another plug he should try? Could every spark plug hole on these heads keep spark from fuel if they do not run deep enough? Thank You .

Try a Champion L82C. It has the same heat range and other dimensions as a Champion H10C except the tread length is slightly longer which gets the tip of plug just past the end of the treads in the Edelbrock aluminum heads.

[Ol' Ron]

I often wondered why Edelbrock didn't move the spark plug into the transfer area, so a power tip plug could be used. Tis would put the electrode into the chamber where it could do the most good. However using the 3/4" plug length offers a better selection of plugs and keeps the plug in the right temperature range. All this is part of the tuning of the engine amd when you get evrrything right, you get more power and better fuel economy.

[uncle max]

NGK B5-ES are OK by me.

[Walt Dupont--Me.]

Go to your regular parts place, get a 3/4reach. Autolite plug that is the same heat range as the 216 Autolite. I can't remember the no. The store will have a plug chart. Walt

[Ed Pitts]

Autolite 3924's are what I have in my Edelbrock head. Ed