Spark Plugs

peewee2you

peewee2you

Well-known member
59AB 47 Ford Engine, currently using Champion HC10 seem to be doing fine, due for new ones and thought I'd run it by you folks to get varying ideas on these or any other plug recommendations that are being used.
 
i want to change to the NGK B6L but the B4L has a hotter spark. i have a 8Ba with two holleys and electronic ignition and offy heads.Is there any difference with the spark plugs and any problems i should be aware of if i want to run hotter plugs? Also what is the correct spark plug gap i should have on the above set up?
 
This is from the Mallory data:

Spark Plug Gaps:​
For street applications, use your engine
manufacturers specifications. For racing applications, start
with your engine manufacturers specifications, then
experiment with and closely monitor various gaps to​
achieve maximum performance.

My engine setup is a 59A, I believe a stock cam, Mallory breakerless distributer, Offy regular dual with 2 94s and dual exhaust. Plug gaps are .025" per factory specs. Running real good now. I haven't played with changing gaps from the Ford specs, don't feel the need.

 
hombres ruin said:
i want to change to the NGK B6L but the B4L has a hotter spark. i have a 8Ba with two holleys and electronic ignition and offy heads.Is there any difference with the spark plugs and any problems i should be aware of if i want to run hotter plugs? Also what is the correct spark plug gap i should have on the above set up?
Click to expand...

I've used Autolite 437's in my Offy heads with good results. They're hotter than HC-10's. The 437 is the same as the 416, except for an extended reach.
 
I called my local O'Ralley auto parts store and they have both Auotlite 216 and 437 in stock for $ 1.99 each. That sounds like a real gool deal. I just thought I would pass this imformtion on.

Alan
 
hombres ruin ...........................
A "HOT" spark plug does not have a hotter spark that another.
The "HOT" refers to the temperature of the plug, while operating. The temperature is determined by the closeness to the iron in the block. Vehicles, that do a lot of stop and go driving, need the "HOT" plug to help keep carbon from building.
MIKE :)
 
Thanks, to all that have responded, my 59AB is all stock, and looks like consensus is Autolite 216's, so unless someone feels differently I believe I will give these a go, I will wait a day or two to see if any other post appear to the contrary.

Peter
 
Guys thanks for the great info,what would you recommend for spark plug gap on offy aluminum heads and torque specs? i dont want to eat into the head as aluminum is softer than iron
 
4dFord/SC said:
Correction: The Autolite 437 is the same as the Autolite 216, except....
Click to expand...
I think you'll find the Autolite 437 is a hotter plug than the 216. They will usually work fine if your original plugs run black and sooty or the engine likes to burn a little oil. There usually to hot if you have real high compression. Walt
 
New Autolites are made in China now. Call and ask where made before you buy. I went with NGKs- so far so good.
 
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