Thread: 1966 283 stock compression??
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Old 09-27-2016, 01:13 PM   #4
andyh1956
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Join Date: Mar 2010
Location: thomastown mississippi
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Re: 1966 283 stock compression??
With carb butterflies open at cranking speed a fresh 283 outta show you around 150 psi. P.P. heads may be 5-10 psi higher.
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