This is topic GT40 Spark plug questions, long or short? in forum Tech Talk at Northern California Ford Owners  .


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Posted by SnakeBit (Member # 8871) on :
 
Hey I know this question has been asked a million times. And if you google it you'll find almost as many opinions/answers. This is for a 95 Cobra.

So the the stock MotorCraft Plug is AWSF-32C (Short thread).

Then I read that they changed their part #'s and SP-447 replaces both AWSF-32C (Short thread) & also AGSF-32C (long thread)

http://www.autozone.com/autozone/parts/Motorcraft-Copper-Spark-Plug/1995-Ford-Mustang-Cobra/_/N-j50h5Z8gctd?counter=21&filterByKeyWord=spark+plug&fromString=search&itemIdentifier=5 34650_0_0_

I know that a lot of people also use Autolite 764's (short thread)
http://www.autozone.com/autozone/parts/Autolite-Platinum-Spark-Plug/1995-Ford-Mustang-Cobra/_/N-j50h5Z8gctd?counter=7&filterByKeyWord=spark+plug&fromString=search&itemIdentifier=11 7698_8915_0_


*Is there any difference in performance with the plug being closer to the piston, Short vs long thread?

*I have always set the gap @ .052, I have a MSD 6A and Coil, Should I open the gap a bit?

Thanks
 

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Posted by JohnB (Member # 969) on :
 
There actually is no difference in the plugs, it's the same shoulder seat. Same length.

And call me when you get a chance!
 

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Posted by SnakeBit (Member # 8871) on :
 
ahh so I can go with either 1. Cool

Yeah I'll give you a call today John.
 

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