Looking at the outside threads and the heat mark it leaves on them... should only be on a few threads. If it goes all the way to the base, you need colder plugs. It may take a few passes/hits to show this.Originally Posted by pl4yboy
Looking at the outside threads and the heat mark it leaves on them... should only be on a few threads. If it goes all the way to the base, you need colder plugs. It may take a few passes/hits to show this.
30' Ford Model A Tudor Sedan - Custom chassis - Big bore LS2 - twin B76's - Glide - 9" w/ 3.07 gears - 30" DR tire - 2k lbs cruiser
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