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Re: '77 gt, knock on stop
I have a 72 GT with a 77 motor in it and it does the same thing. I run premium in it and it helps. Checked the timing several times. Nothing. Near as I can figure is the carbon in the combustion chamber gets a hot spot and keeps detonating.
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32 five window, 63 Futura conv., 65 2+2-wip, 66 Mustang conv.-what's left of it.,72 'chero GT, 76 Highboy, 94 Mk VIII
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