Thread: spark plug question
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Old 11-06-2008, 07:59 PM   #20
SvoBrown
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Join Date: Nov 2005
Location: Graham AL
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Quote:
Originally Posted by QWKSNKE View Post
.042 seems like a lot with 16psi of boost. I would think that .035-.036 would be best
.32 to .36 runs best for me. 20 psi. Motorcraft 764 I think. Need to look to make sure. Change them every 10 k,
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