Spark Plugs What is Correct Plug for 302 Motor?

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Machman

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My car seem is running a bit unevely and I was not sure I have the correct spark plugs in it. Spark is going to all the wires so I figure it may be the plugs

My engine is a 302 and the plugs in it are Motorcraft ASF 32C

Are these the correct plugs? If they are not correct does it make a difference in running?

Thanks for any help advice

AJ

 
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Machman

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Anyone know what the motorcraft and autolite spark plug would be if the heads are new from a 1977?

 
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Machman

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Found info Summit says spark plug is a ASF52 or SP-425 is good for a 302 for 77 maverick which is also same for 71 mustang

 

matrixx

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just bought autolight 45's for my 73 today. Going to try them out when i get home.

 

matrixx

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Clicked the link and just a blank page came up and said.

Mister4x4 = politically correct:p

 

CTGSTANG

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I just put in Autolite 25 per other member's recommendation in my 72 302.

 

matrixx

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Obviously either the parts guy was dumb or I don't have a 73 302 he gave me autilite 45 but there's a huge difference. See pic mine on the right auto lite on the left.

uploadfromtaptalk1342221974172.jpg

 

Tnfastbk

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I'd cite the whole use of the terms "engine" vs. "motor" thing, but apparently it's accepted either way. rofl

http://en.wikipedia.org/wiki/Engine

Nothing to see here... move along. ;)
Hmm thats a change

motor= electric

engine= non electric

in the day



Obviously either the parts guy was dumb or I don't have a 73 302 he gave me autilite 45 but there's a huge difference. See pic mine on the right auto lite on the left.
or newer model heads, The spark plug diameters of the 302s (and '69-up 351Windsors) was also 18mm until 1975, when Ford went to the smaller 14mm spark plugs in both the '75-up 302s & 351 Windsors.

 
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matrixx

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So its safe to say I have a 75 or newer 302. Will have to be later before I can look up the casting numbers.

 
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