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31 Flyer 07-25-2018 08:03 PM

1936 Spark Plugs
 

I am working to restore a 36 Club Cabriolet for judging. I am building an engine (36 LB Block) with NOS aluminum heads and according to the 35-36 Ford Book the correct spark plug is a Champion 7. I was able to find a NOS set of Champion C-7's with the brass hats and screw on tops for the hook type spark plug wires. My question is what is the difference between the C-7 and the 7 spark plug. Also, for those of you who have attended shows with your cars, do you run a different spark plug and then switch to the "show" spark plug. If you do, what spark plug do you run for "fun"?

DavidG 07-26-2018 06:52 AM

Re: 1936 Spark Plugs
 

Ford last used the C-7 plug in early '34 model V8 production. The Champion 7s had a different heat range and were used from early '34 through '37 and partially into '38.

31 Flyer 07-26-2018 01:40 PM

Re: 1936 Spark Plugs
 

DavidG Thank you so much for this information. I really appreciate the help in getting the car as original as possible. Do you know if the 7's are used for show and then something else are used for daily driving? I plan to use the car for tours and occasionally for shows.
What do you think is the proper equivalent plug that would be less expensive? I do have original aluminum heads. Your thoughts would be appreciated.

DavidG 07-26-2018 04:27 PM

Re: 1936 Spark Plugs
 

Sorry, I only use the 7s, but then I don't drive them much. Hopefully someone with the requisite experience will chime in.

KiWinUS 07-26-2018 05:55 PM

Re: 1936 Spark Plugs
 

I is UD16 Champions for my stock 36 & have for many years
I check them every 8000ml & typically look fantastic

pooch 07-27-2018 02:21 AM

Re: 1936 Spark Plugs
 

I use 7 and I have never seen such a classic tan as these. and I run normal unleaded with a valve saver additive.

Don Rogers 07-27-2018 09:34 AM

Re: 1936 Spark Plugs
 

You could also try Autolite 386 or NGK AB-6

Brian 07-27-2018 09:54 PM

Re: 1936 Spark Plugs
 

Michael [1935fordtn] currently has a set of '7's for sale on the 'Bay.


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