plug question

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Dec 12, 2002 | 09:27 PM

CrankinYankee

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Joined: Nov 2002

Posts: 47

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From: northern parts

plug question

I know there is a colder plug than a tr6. However I can't remember the plug #. Can anyone help me out.

Dec 13, 2002 | 05:20 PM

Joe Lynch

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Joined: Dec 2002

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From: Midland, TX

Re: plug question

I couldn't find a "TR-7" plug from NGK. I went to a Motorcraft instead. The Motorcraft AWSFA-12C is one step colder than the TR-6, but it's not stocked very many places. Ford house can order you a box of 10. The Lightning guys use them in their supercharged engines. I use them with a 100 shot in a Cobra. They are only threaded for 1/2 the length from the seat to the tip. I am not sure there is enough thread for the LS1 engine. If they have enough thread, these will work fine. I run the TR-6s on the street on motor and up to a 75 shot at the strip.

Joe Lynch